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 kwpackage = 'package';
99 kwabstract = 'abstract';
100 kwinterface = 'interface';
101 kwenum = 'universal'|'enum';
109 kwreadable = 'readable';
110 kwwritable = 'writable';
114 kwprotected = 'protected';
115 kwprivate = 'private';
116 kwintrude = 'intrude';
127 kwimplies = 'implies';
129 kwcontinue = 'continue';
142 kwnullable = 'nullable';
145 kwdebug = '__debug__';
177 classid = uppercase letter*;
178 id = lowercase letter*;
179 attrid = '_' lowercase letter*;
182 float = digit* '.' digit+;
183 string = '"' str_body '"' | '"' '"' '"' long_str_body '"' '"' '"' | ''' ''' ''' long_sstr_body ''' ''' ''';
184 start_string = '"' str_body '{' | '"' '"' '"' long_str_body '{' '{' '{';
185 mid_string = '}' str_body '{' | '}' '}' '}' long_str_body '{' '{' '{';
186 end_string = '}' str_body '"' | '}' '}' '}' long_str_body '"' '"' '"';
187 char = (''' [[any - '''] - '\'] ''') | (''' '\' any ''');
188 bad_string = ('"'|'}') str_body | '"' '"' '"' long_str_body | ''' ''' ''' long_sstr_body;
189 bad_char = ''' '\'? any;
191 extern_code_segment = '`' '{' extern_code_body '`' '}';
193 /*****************************************************************************/
195 /*****************************************************************************/
199 /*****************************************************************************/
201 /*****************************************************************************/
203 /* MODULES *******************************************************************/
205 = 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])};
208 = [doc]:no kwmodule no module_name annotation_withend? [n2]:n1 {-> New moduledecl(doc.doc, kwmodule, module_name, annotation_withend.annotations)};
211 = {std} [doc]:no visibility kwimport no module_name annotation_withend? [n2]:n1 {-> New import.std(visibility, kwimport, module_name, annotation_withend.annotations)}
212 | {no} [doc]:no visibility kwimport no kwend [n2]:n1 {-> New import.no(visibility, kwimport, kwend)}
215 implicit_top_class {-> classdef}
216 = propdefs_toplevel+ {-> New classdef.top([propdefs_toplevel.propdef])};
218 implicit_main_class {-> classdef?}
219 = implicit_main_meth {-> New classdef.main([implicit_main_meth.propdef])}
222 implicit_main_meth {-> propdef}
223 = [doc]:no stmts {-> New propdef.main_meth(Null, stmts.expr)}
224 | {n} [doc]:no stmtsn {-> New propdef.main_meth(Null, stmtsn.expr)}
227 /* CLASSES *******************************************************************/
229 = [doc]:no redef visibility classkind no qualified? classid formaldefs? line_annotations_forclass? extern_code_block? [superclasses]:superclass* propdefs* [n2]:no kwend {-> New classdef.std(doc.doc, redef.kwredef, visibility, classkind, classid, [formaldefs.formaldef], line_annotations_forclass.annotations, extern_code_block, [superclasses.superclass], [propdefs.propdef], kwend)};
231 = kwredef? {-> kwredef};
234 | {abstract} kwabstract kwclass
235 | {interface} kwinterface
237 | {extern} kwextern kwclass?
240 formaldefs {-> formaldef*}
241 = obra no formaldef formaldefs_tail* [n2]:no cbra {-> [formaldef, formaldefs_tail.formaldef]};
242 formaldefs_tail {-> formaldef}
243 = comma no formaldef {-> formaldef};
245 = classid annotations? typing? {-> New formaldef(classid, typing.type, annotations)};
247 superclass {-> superclass}
248 = {super} no kwsuper [n2]:no type annotation_withend? {-> New superclass(kwsuper, type, annotation_withend.annotations)}
251 propdefs~toplevel {-> propdef}
252 = propdef~toplevel n1 {-> propdef~toplevel.propdef}
254 propdef~toplevel {-> propdef}
255 = {meth} [doc]:no redef visibility kwmeth methid signature annotation_noend? kwdo stmtso kwend? {-> New propdef.concrete_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature, annotation_noend.annotations, stmtso.expr)}
256 | {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, Null, assign_return.expr)}
257 | {nobody} [doc]:no redef visibility kwmeth methid signature annotation_withend {-> New propdef.deferred_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature, annotation_withend.annotations)}
258 !toplevel| {deferred} [doc]:no redef visibility kwmeth methid signature kwis kwabstract {-> New propdef.deferred_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature, Null)}
259 !toplevel| {intern} [doc]:no redef visibility kwmeth methid signature kwis kwintern {-> New propdef.intern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)}
260 | {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)}
261 | {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)}
262 !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, Null)}
263 !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, Null, expr)}
264 !toplevel| {var3} [doc]:no redef visibility kwvar id typing? writable2? annotation_withend? {-> New propdef.attr(doc.doc, Null, writable2.able, redef.kwredef, visibility, kwvar, Null, id, typing.type, annotation_withend.annotations, Null)}
265 !toplevel| {var4} [doc]:no redef visibility kwvar id typing? writable2? assign [n2]:no expr annotation_withend? {-> New propdef.attr(doc.doc, Null, writable2.able, redef.kwredef, visibility, kwvar, Null, id, typing.type, annotation_withend.annotations, expr.expr)}
266 !toplevel| {init} [doc]:no redef visibility kwinit methid? signature annotation_noend? kwdo stmtso kwend? {-> New propdef.concrete_init(doc.doc, redef.kwredef, visibility, kwinit, methid, signature, annotation_noend.annotations, stmtso.expr)}
267 !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)}
268 !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)}
269 !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)}
271 annotation_withend {-> annotations}
272 = {oneliner} kwis many_annotations {-> many_annotations.annotations}
273 | {more} kwis n1 line_annotations kwend {-> line_annotations.annotations}
275 annotation_noend {-> annotations}
276 = {oneliner} kwis many_annotations {-> many_annotations.annotations}
277 | {more} kwis n1 line_annotations {-> line_annotations.annotations}
280 = redef kwreadable {-> New able.read(redef.kwredef, kwreadable)}
283 = redef kwwritable {-> New able.write(redef.kwredef, Null, kwwritable)}
286 = redef visibility kwwritable {-> New able.write(redef.kwredef, visibility, kwwritable)}
290 = {public} {-> New visibility.public()}
291 | {private} kwprivate no {-> New visibility.private(kwprivate)}
292 | {protected} kwprotected no {-> New visibility.protected(kwprotected)}
293 | {intrude} kwintrude no {-> New visibility.intrude(kwintrude)}
297 = {id} id {-> New methid.id(id)}
298 | {plus} plus {-> New methid.plus(plus)}
299 | {minus} minus {-> New methid.minus(minus)}
300 | {star} star {-> New methid.star(star)}
301 | {slash} slash {-> New methid.slash(slash)}
302 | {percent} percent {-> New methid.percent(percent)}
303 | {eq} eq {-> New methid.eq(eq)}
304 | {ne} ne {-> New methid.ne(ne)}
305 | {le} le {-> New methid.le(le)}
306 | {ge} ge {-> New methid.ge(ge)}
307 | {lt} lt {-> New methid.lt(lt)}
308 | {gt} gt {-> New methid.gt(gt)}
309 | {ll} ll {-> New methid.ll(ll)}
310 | {gg} gg {-> New methid.gg(gg)}
311 | {bra} obra cbra {-> New methid.bra(obra, cbra)}
312 | {starship} starship {-> New methid.starship(starship)}
313 | {assign} id assign {-> New methid.assign(id, assign)}
314 | {braassign} obra cbra assign {-> New methid.braassign(obra, cbra, assign)}
317 signature~withret {-> signature}
318 = opar no params? cpar typing [no2]:no {-> New signature(opar, [params.param], cpar, typing.type)}
319 !withret| {noret} opar no params? cpar [no2]:no {-> New signature(opar, [params.param], cpar, Null)}
320 | {nopar} typing no {-> New signature(Null, [], Null, typing.type)}
321 !withret| {noparnoret} no {-> New signature(Null, [], Null, Null)}
325 = param params_tail* [n2]:no {-> [param, params_tail.param] }
327 params_tail {-> param}
328 = comma no param {-> param};
330 = {untyped} id annotations? {-> New param(id, Null, Null, annotations)}
331 | id annotations? typing dotdotdot? {-> New param(id, typing.type, dotdotdot, annotations)}
334 assign_return{-> expr}
335 = expr_final {-> New expr.return(Null, expr_final.expr)}
338 extern_calls {-> extern_calls}
339 = kwimport no extern_call extern_call_tail* {-> New extern_calls( kwimport, [extern_call, extern_call_tail.extern_call] )}
341 extern_call_tail {-> extern_call}
342 = comma no extern_call {-> extern_call};
343 extern_call {-> extern_call}
344 = {prop} extern_call_prop {-> extern_call_prop.extern_call}
345 | {cast} extern_call_cast {-> extern_call_cast.extern_call}
346 | {super} kwsuper {-> New extern_call.super( kwsuper )}
348 extern_call_prop {-> extern_call}
349 = {local} methid {-> New extern_call.local_prop( methid )}
350 | {full} classid quad methid {-> New extern_call.full_prop( classid, quad, methid )}
351 | {init} classid {-> New extern_call.init_prop( classid )}
353 extern_call_cast {-> extern_call}
354 = {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)}
355 | {as_nullable} type kwas [n2]:no kwnullable {-> New extern_call.as_nullable( type, kwas, kwnullable)}
356 | {as_not_nullable} type kwas [n2]:no kwnot [n3]:no kwnullable {-> New extern_call.as_not_nullable( type, kwas, kwnot, kwnullable)}
359 in_language = kwin string;
360 extern_code_block = in_language? extern_code_segment;
361 extern_code_body {-> extern_code_block} = no extern_code_block {-> extern_code_block};
363 /* TYPES *********************************************************************/
364 type~nobra~nopar {-> type}
365 = {simple} kwnullable? classid annotations~nopar? {-> New type(kwnullable, classid, [], annotations~nopar.annotations)}
366 !nobra | {generic} kwnullable? classid obra no types [n2]:no cbra annotations~nopar? {-> New type(kwnullable, classid, [types.type], annotations~nopar.annotations)}
369 = type types_tail* {-> [type, types_tail.type]};
371 = comma no type {-> type};
373 = column no type {-> type};
375 /* STATMENTS *****************************************************************/
376 stmtso~withelse~withend {-> expr?}
377 = {block} n stmtsnend {-> stmtsnend.expr}
378 | {emptyblock} n kwend {-> New expr.block([], kwend)}
379 | {emptyoneline} kwend {-> New expr.block([], kwend)}
380 !withend| {oneline} stmt~withelse {-> stmt~withelse.expr}
383 = stmt stmts_tail* {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
385 = stmt stmts_tail* n {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
387 = stmt stmts_tail* n kwend {-> New expr.block([stmt.expr, stmts_tail.expr], kwend)};
389 = n stmt {-> stmt.expr};
390 stmt~withelse~noexpr~nopar {-> expr}
391 = {vardecl} vardecl~withelse {-> vardecl~withelse.expr}
392 | {assign} assignment~withelse~nopar {-> assignment~withelse~nopar.expr}
393 | {return} kwreturn expr_final~withelse? {-> New expr.return(kwreturn, expr_final~withelse.expr)}
394 | {break} kwbreak label? expr_final~withelse? {-> New expr.break(kwbreak, label, expr_final~withelse.expr)}
395 | {abort} kwabort {-> New expr.abort(kwabort)}
396 | {continue} kwcontinue label? expr_final~withelse? {-> New expr.continue(kwcontinue, label, expr_final~withelse.expr)}
397 | {do} do~withelse {-> do~withelse.expr}
398 !noexpr | {if} if~withelse {-> if~withelse.expr}
399 | {while} while~withelse {-> while~withelse.expr}
400 | {loop} loop~withelse {-> loop~withelse.expr}
401 | {for} for~withelse {-> for~withelse.expr}
402 | {assert} assert~withelse {-> assert~withelse.expr}
403 !noexpr | {call} recv qualified? id args_nopar {-> New expr.call(recv.expr, id, args_nopar.exprs)}
404 !noexpr | {super} qualified? kwsuper args_nopar {-> New expr.super(qualified, kwsuper, args_nopar.exprs)}
405 !noexpr | {init} recv qualified? kwinit args_nopar {-> New expr.init(recv.expr, kwinit, args_nopar.exprs)}
406 | {debug_type_is} kwdebug kwtype type column expr_final~withelse {-> New expr.debug_type(kwdebug, kwtype, expr_final~withelse.expr, type) }
411 assign_continue~withelse{-> expr}
412 = expr_final~withelse {-> New expr.continue(Null, Null, expr_final~withelse.expr)}
415 vardecl~withelse{-> expr}
416 = kwvar id annotations? typing? {-> New expr.vardecl(kwvar, id, typing.type, Null, Null, annotations)}
417 | {assign} kwvar id annotations? typing? assign no expr_final~withelse {-> New expr.vardecl(kwvar, id, typing.type, assign, expr_final~withelse.expr, annotations)}
420 assignment~withelse~nopar {-> expr}
421 = {attr} recv~nopar qualified? attrid assign expr_final~withelse {-> New expr.attr_assign(recv~nopar.expr, attrid, assign, expr_final~withelse.expr)}
422 | {call} recv~nopar qualified? id args assign expr_final~withelse {-> New expr.call_assign(recv~nopar.expr, id, args.exprs, assign, expr_final~withelse.expr)}
423 | {bra} expr_atom~nopar braargs assign expr_final~withelse {-> New expr.bra_assign(expr_atom~nopar.expr, braargs.exprs, assign, expr_final~withelse.expr)}
424 | {attr_re} recv~nopar qualified? attrid assign_op expr_final~withelse {-> New expr.attr_reassign(recv~nopar.expr, attrid, assign_op, expr_final~withelse.expr)}
425 | {call_re} recv~nopar qualified? id args assign_op expr_final~withelse {-> New expr.call_reassign(recv~nopar.expr, id, args.exprs, assign_op, expr_final~withelse.expr)}
426 | {bra_re} expr_atom~nopar braargs assign_op expr_final~withelse {-> New expr.bra_reassign(expr_atom~nopar.expr, braargs.exprs, assign_op, expr_final~withelse.expr)}
433 do~withelse {-> expr}
434 = kwdo stmtso_withend label {-> New expr.do(kwdo, stmtso_withend.expr, label)}
435 | {nolabel} kwdo stmtso~withelse {-> New expr.do(kwdo, stmtso~withelse.expr, Null)}
438 if~withelse {-> expr}
439 = {onelineelse} kwif no expr [n2]:no kwthen stmt_withelse kwelse stmtso~withelse {-> New expr.if(kwif, expr, stmt_withelse.expr, stmtso~withelse.expr)}
440 !withelse | {oneline} kwif no expr [n2]:no kwthen stmt {-> New expr.if(kwif, expr, stmt.expr, Null)}
441 !withelse | {block} kwif no expr [n2]:no kwthen [n3]:n stmtsn elsepartblock {-> New expr.if(kwif, expr, stmtsn.expr, elsepartblock.expr)}
442 !withelse | {emptyblock} kwif no expr [n2]:no kwthen [n3]:n? elsepartblock {-> New expr.if(kwif, expr, Null, elsepartblock.expr)}
444 elsepartblock {-> expr?}
445 = {else} kwelse stmtso {-> stmtso.expr}
446 | {empty} kwend {-> New expr.block([], kwend)}
449 loop~withelse {-> expr}
450 = kwloop stmtso_withend label {-> New expr.loop(kwloop, stmtso_withend.expr, label)}
451 | {nolabel} kwloop stmtso~withelse {-> New expr.loop(kwloop, stmtso~withelse.expr, Null)}
454 while~withelse {-> expr}
455 = kwwhile no expr [n2]:no kwdo stmtso_withend label {-> New expr.while(kwwhile, expr, kwdo, stmtso_withend.expr, label)}
456 | {nolabel} kwwhile no expr [n2]:no kwdo stmtso~withelse {-> New expr.while(kwwhile, expr, kwdo, stmtso~withelse.expr, Null)}
459 for~withelse {-> expr}
460 = 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)}
461 | {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)}
464 assert~withelse {-> expr}
465 = {else} kwassert assertid? expr_final_withelse kwelse stmtso~withelse {-> New expr.assert(kwassert, assertid.id, expr_final_withelse.expr, stmtso~withelse.expr)}
466 !withelse| {noelse} kwassert assertid? expr_final {-> New expr.assert(kwassert, assertid.id, expr_final.expr, Null)}
471 /* EXPRESSIONS ***************************************************************/
472 expr_final~nopar~withelse~nobra {-> expr}
473 = expr~nopar~nobra {-> expr~nopar~nobra.expr}
476 expr~nopar~nobra {-> expr}
477 = expr_and~nopar~nobra {-> expr_and~nopar~nobra.expr}
478 | {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)}
481 expr_and~nopar~nobra {-> expr}
482 = expr_not~nopar~nobra {-> expr_not~nopar~nobra.expr}
483 | {:or} expr_and~nopar~nobra :kwor :no expr_not~nopar~nobra
484 | {:and} expr_and~nopar~nobra :kwand :no expr_not~nopar~nobra
485 | {:or_else} expr_and~nopar~nobra :kwor :kwelse :no expr_not~nopar~nobra
486 | {:implies} expr_and~nopar~nobra :kwimplies :no expr_not~nopar~nobra
489 expr_not~nopar~nobra {-> expr}
490 = expr_eq~nopar~nobra {-> expr_eq~nopar~nobra.expr}
491 | {not} kwnot no expr_not~nopar~nobra {-> New expr.not(kwnot, expr_not~nopar~nobra.expr)}
494 expr_eq~nopar~nobra {-> expr}
495 = expr_add~nopar~nobra {-> expr_add~nopar~nobra.expr}
496 | {:eq} expr_add~nopar~nobra :eq :no [expr2]:expr_add~nopar~nobra
497 | {:ne} expr_add~nopar~nobra :ne :no [expr2]:expr_add~nopar~nobra
498 | {:lt} expr_add~nopar~nobra :lt :no [expr2]:expr_add~nopar~nobra
499 | {:le} expr_add~nopar~nobra :le :no [expr2]:expr_add~nopar~nobra
500 | {:ll} expr_eq~nopar~nobra :ll :no [expr2]:expr_add~nopar~nobra
501 | {:gt} expr_add~nopar~nobra :gt :no [expr2]:expr_add~nopar~nobra
502 | {:ge} expr_add~nopar~nobra :ge :no [expr2]:expr_add~nopar~nobra
503 | {:gg} expr_eq~nopar~nobra :gg :no [expr2]:expr_add~nopar~nobra
504 | {:starship} expr_add~nopar~nobra :starship :no [expr2]:expr_add~nopar~nobra
505 | {:isa} expr_add~nopar~nobra :kwisa :no type~nobra
508 expr_add~nopar~nobra {-> expr}
509 = expr_mul~nopar~nobra {-> expr_mul~nopar~nobra.expr}
510 | {:plus} expr_add~nopar~nobra :plus :no [expr2]:expr_mul~nopar~nobra
511 | {:minus} expr_add~nopar~nobra :minus :no [expr2]:expr_mul~nopar~nobra
514 expr_mul~nopar~nobra {-> expr}
515 = expr_minus~nopar~nobra {-> expr_minus~nopar~nobra.expr}
516 | {:star} expr_mul~nopar~nobra :star :no [expr2]:expr_minus~nopar~nobra
517 | {:slash} expr_mul~nopar~nobra :slash :no [expr2]:expr_minus~nopar~nobra
518 | {:percent} expr_mul~nopar~nobra :percent :no [expr2]:expr_minus~nopar~nobra
521 expr_minus~nopar~nobra {-> expr}
522 = expr_new~nopar~nobra {-> expr_new~nopar~nobra.expr}
523 | {:uminus} minus :no expr_minus~nopar~nobra
524 | {:once} kwonce :no expr_minus~nopar~nobra
527 expr_new~nopar~nobra {-> expr}
528 = expr_atom~nopar~nobra {-> expr_atom~nopar~nobra.expr}
529 | {new} kwnew no type~nobra_nopar args {-> New expr.new(kwnew, type~nobra_nopar.type, Null, args.exprs)}
530 | {isset_attr} kwisset recv~nopar~nobra qualified? attrid {-> New expr.isset_attr(kwisset, recv~nopar~nobra.expr, attrid)}
533 expr_atom~nopar~nobra {-> expr}
534 = {attr} recv~nopar~nobra qualified? attrid {-> New expr.attr(recv~nopar~nobra.expr, attrid)}
535 | {call} recv~nopar~nobra qualified? id args {-> New expr.call(recv~nopar~nobra.expr, id, args.exprs)}
536 | {super} qualified? kwsuper args {-> New expr.super(qualified, kwsuper, args.exprs)}
537 | {init} recv~nopar~nobra kwinit args {-> New expr.init(recv~nopar~nobra.expr, kwinit, args.exprs)}
538 !nobra | {bra} expr_atom~nopar braargs {-> New expr.bra(expr_atom~nopar.expr, braargs.exprs)}
539 | {new} kwnew no type~nobra_nopar dot [n2]:no qualified? id args {-> New expr.new(kwnew, type~nobra_nopar.type, id, args.exprs)}
540 // !nopar to unambiguise 'foo[5].bar' between '(foo[5]).bar' and 'foo([5].bar),
541 !nobra!nopar | {range} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no cbra annotations? {-> New expr.crange(obra, expr, expr2.expr, cbra, annotations)}
542 !nobra!nopar | {orange} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no [cbra]:obra annotations? {-> New expr.orange(obra, expr, expr2.expr, cbra, annotations)}
543 !nobra!nopar | {array} braargs annotations? {-> New expr.array(braargs.exprs, annotations)}
544 | {self} kwself annotations? {-> New expr.self(kwself, annotations)}
545 | {true} kwtrue annotations? {-> New expr.true(kwtrue, annotations)}
546 | {false} kwfalse annotations? {-> New expr.false(kwfalse, annotations)}
547 | {null} kwnull annotations? {-> New expr.null(kwnull, annotations)}
548 | {int} number annotations? {-> New expr.int(number, annotations)}
549 | {float} float annotations? {-> New expr.float(float, annotations)}
550 | {char} char annotations? {-> New expr.char(char, annotations)}
551 | {string} string annotations? {-> New expr.string(string, annotations)}
552 | {superstring} superstring {-> superstring.expr}
553 !nopar | {par} opar no expr [n2]:no cpar annotations? {-> New expr.par(opar, expr, cpar, annotations)}
554 | {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)}
555 | {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)}
558 superstring {-> expr}
559 = superstring_start superstring_middle* superstring_end annotations? {-> New expr.superstring([superstring_start.expr, superstring_middle.expr, superstring_end.expr], annotations)};
560 superstring_start {-> expr*}
561 = start_string_p no expr [n2]:no {-> [start_string_p.expr, expr]};
562 start_string_p {-> expr}
563 = start_string {-> New expr.start_string(start_string)};
564 superstring_middle {-> expr*}
565 = mid_string_p no expr [n2]:no {-> [mid_string_p.expr, expr]};
566 mid_string_p {-> expr}
567 = mid_string {-> New expr.mid_string(mid_string)};
568 superstring_end {-> expr}
569 = end_string {-> New expr.end_string(end_string)};
571 /* ANNOTATIONS *******************************************************************/
573 annotations~nopar {-> annotations}
574 = {one} at one_annotation~nopar {-> New annotations(at, Null, [one_annotation~nopar.annotation], Null)}
575 | {many} at opar no annotation_list [n2]:no cpar {-> New annotations(at, opar, [annotation_list.annotation], cpar)}
578 one_annotation~nopar {-> annotation}
579 = {alone} atid annotations~nopar? {-> New annotation(atid, Null, [], Null, annotations~nopar.annotations)}
580 // !nopar to unambiguise 'new T@foo(bar)' between 'new T@(foo(bar))' and 'new (T@foo)(bar)'
581 !nopar | {args} atid opar no at_args [n2]:no cpar annotations~nopar? {-> New annotation(atid, opar, [at_args.at_arg], cpar, annotations~nopar.annotations)}
584 many_annotations {-> annotations}
585 = {many} annotation_list {-> New annotations(Null, Null, [annotation_list.annotation], Null)}
588 annotation_list {-> annotation*}
589 = {many} one_annotation annotations_tail* {-> [one_annotation.annotation, annotations_tail.annotation] }
592 line_annotations~forclass {-> annotations}
593 = line_annotation~forclass+ {-> New annotations(Null, Null, [line_annotation~forclass.annotation], Null) }
595 line_annotation~forclass {-> annotation}
596 = [doc]:no atid~forclass annotations? n1 {-> New annotation(atid~forclass.atid, Null, [], Null, annotations)}
597 | {args} [doc]:no atid~forclass opar no at_args cpar annotations? n1 {-> New annotation(atid~forclass.atid, opar, [at_args.at_arg], cpar, annotations)}
598 | {nopar} [doc]:no atid~forclass at_args_nopar n1 {-> New annotation(atid~forclass.atid, Null, [at_args_nopar.at_arg], Null, Null)}
601 annotations_tail {-> annotation}
602 = comma no one_annotation {-> one_annotation.annotation}
605 at_args~nopar {-> at_arg* }
606 = {many} at_arg~nopar at_args_tail* {-> [at_arg~nopar.at_arg, at_args_tail.at_arg]}
609 at_args_tail {-> at_arg}
610 = comma no at_arg {-> at_arg}
613 at_arg~nopar {-> at_arg}
614 = {type} type {-> New at_arg.type(type)}
615 | {expr} expr~nopar {-> New at_arg.expr(expr~nopar.expr)}
616 | {stmt} stmt_noexpr~nopar {-> New at_arg.expr(stmt_noexpr~nopar.expr)}
617 !nopar | {at} annotations {-> New at_arg.at(annotations.annotations)}
620 atid~forclass {-> atid}
621 = {id} id {-> New atid.id(id)}
622 //!forclass | {kwextern} qualified? kwextern {-> New atid.kwextern(kwextern)}
623 //!forclass | {kwintern} qualified? kwintern {-> New atid.kwintern(kwintern)}
624 !forclass | {kwreadable} kwreadable {-> New atid.kwreadable(kwreadable)}
625 !forclass | {kwwritable} kwwritable {-> New atid.kwwritable(kwwritable)}
626 | {kwimport} kwimport {-> New atid.kwimport(kwimport)}
629 /* MISC **********************************************************************/
631 recv~nopar~nobra {-> expr}
632 = expr_atom~nopar~nobra dot no {-> expr_atom~nopar~nobra.expr}
633 | {implicit} {-> New expr.implicit_self()}
637 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
638 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
639 | {empty} {-> New exprs.list([])}
641 args_nopar {-> exprs}
642 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
643 | {onearg} expr_nopar {-> New exprs.list([expr_nopar.expr])}
644 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
645 | {empty} {-> New exprs.list([])}
648 = obra no expr_list cbra {-> New exprs.bra(obra, [expr_list.expr], cbra)};
650 = expr [n2]:no expr_tail* {-> [expr, expr_tail.expr]};
652 = comma no expr [n2]:no {-> expr};
654 = opar no idlist_nopar [n2]:no cpar {-> [idlist_nopar.id]}
655 | {nopar} idlist_nopar {-> [idlist_nopar.id]}
657 idlist_nopar {-> id*}
658 = {single} id {-> [id]}
659 | {more} idlist_nopar no comma [n2]:no id {-> [idlist_nopar.id, id]}
662 module_name {-> module_name}
663 = {mod} modquad* id {-> New module_name(Null, [modquad.id], id)}
664 | {root} quad no modquad* id {-> New module_name(quad, [modquad.id], id)}
668 = {cla} modquad* classquad {-> New qualified([modquad.id], classquad.classid)}
669 | {mod} modquad+ {-> New qualified([modquad.id], Null)}
672 = id quad no {-> id};
673 classquad {-> classid}
674 = classid quad no {-> classid};
676 n1 = {a} comment | {b} eol;
678 = {a} n2? comment+ {-> New doc([comment])}
687 = {a} n2? comment+ eol+
691 /*****************************************************************************/
693 /*****************************************************************************/
695 module = moduledecl? [imports]:import* [extern_code_blocks]:extern_code_block* [classdefs]:classdef*;
698 = doc? kwmodule [name]:module_name annotations?;
700 import = {std} visibility kwimport [name]:module_name annotations?
701 | {no} visibility kwimport kwend
706 | {private} kwprivate
707 | {protected} kwprotected
708 | {intrude} kwintrude
711 classdef= {std} doc? kwredef? visibility classkind [id]:classid? [formaldefs]:formaldef* annotations? extern_code_block? [superclasses]:superclass* [propdefs]:propdef* kwend
712 | {top} [propdefs]:propdef*
713 | {main} [propdefs]:propdef*
717 | {abstract} kwabstract kwclass
718 | {interface} kwinterface
720 | {extern} kwextern kwclass?
722 formaldef = [id]:classid type? annotations?;
723 superclass = kwsuper type annotations?;
726 propdef = {attr} doc? [readable]:able? [writable]:able? kwredef? visibility kwvar [id]:attrid? [id2]:id? type? annotations? expr?
727 | {meth} doc? kwredef? visibility methid signature
728 | {deferred_meth} doc? kwredef? visibility kwmeth methid signature annotations?
729 | {intern_meth} doc? kwredef? visibility kwmeth methid signature
730 | {extern_meth} doc? kwredef? visibility kwmeth methid signature [extern]:string? extern_calls? extern_code_block?
731 | {concrete_meth} doc? kwredef? visibility kwmeth methid signature annotations? [block]:expr?
732 | {concrete_init} doc? kwredef? visibility kwinit methid? signature annotations? [block]:expr?
733 //| {concrete_new} doc? kwredef? visibility kwnew methid? signature [block]:expr?
734 | {extern_init} doc? kwredef? visibility kwnew methid? signature [extern]:string? extern_calls? extern_code_block?
735 | {main_meth} kwredef? [block]:expr?
736 | {type} doc? kwredef? visibility kwtype [id]:classid type annotations?
739 able = {read} kwredef? kwreadable
740 | {write} kwredef? visibility? kwwritable
743 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;
745 signature = opar? [params]:param* cpar? type?;
747 param = id type? dotdotdot? annotations?
750 type = kwnullable? [id]:classid [types]:type* annotations?;
754 expr = {block} expr* kwend?
755 | {vardecl} kwvar id type? assign? expr? annotations?
756 | {return} kwreturn? expr?
757 | {break} kwbreak label? expr?
759 | {continue} kwcontinue? label? expr?
760 | {do} kwdo [block]:expr? label?
761 | {if} kwif expr [then]:expr? [else]:expr?
762 | {ifexpr} kwif expr kwthen [then]:expr kwelse [else]:expr
763 | {while} kwwhile expr kwdo [block]:expr? label?
764 | {loop} kwloop [block]:expr? label?
765 | {for} kwfor [ids]:id* expr kwdo [block]:expr? label?
766 | {assert} kwassert id? expr [else]:expr?
769 | {binop} expr [expr2]:expr
770 | {or} expr [expr2]:expr
771 | {and} expr [expr2]:expr
772 | {or_else} expr [expr2]:expr
773 | {implies} expr [expr2]:expr
775 | {eq} expr [expr2]:expr
776 | {ne} expr [expr2]:expr
777 | {lt} expr [expr2]:expr
778 | {le} expr [expr2]:expr
779 | {ll} expr [expr2]:expr
780 | {gt} expr [expr2]:expr
781 | {ge} expr [expr2]:expr
782 | {gg} expr [expr2]:expr
784 | {plus} expr [expr2]:expr
785 | {minus} expr [expr2]:expr
786 | {starship} expr [expr2]:expr
787 | {star} expr [expr2]:expr
788 | {slash} expr [expr2]:expr
789 | {percent} expr [expr2]:expr
790 | {uminus} minus expr
791 | {new} kwnew type id? [args]:exprs
792 | {attr} expr [id]:attrid
793 | {attr_assign} expr [id]:attrid assign [value]:expr
794 | {attr_reassign} expr [id]:attrid assign_op [value]:expr
795 | {call} expr id [args]:exprs
796 | {call_assign} expr id [args]:exprs assign [value]:expr
797 | {call_reassign} expr id [args]:exprs assign_op [value]:expr
798 | {super} qualified? kwsuper [args]:exprs
799 | {init} expr kwinit [args]:exprs
800 | {bra} expr [args]:exprs
801 | {bra_assign} expr [args]:exprs assign [value]:expr
802 | {bra_reassign} expr [args]:exprs assign_op [value]:expr
804 | {var_assign} id assign [value]:expr
805 | {var_reassign} id assign_op [value]:expr
806 | {range} expr [expr2]:expr annotations?
807 | {crange} obra expr [expr2]:expr cbra annotations?
808 | {orange} obra expr [expr2]:expr [cbra]:obra annotations?
809 | {array} [exprs]:exprs annotations?
810 | {self} kwself annotations?
812 | {true} kwtrue annotations?
813 | {false} kwfalse annotations?
814 | {null} kwnull annotations?
815 | {int} number annotations?
816 | {float} float annotations?
817 | {char} char annotations?
818 | {string} string annotations?
819 | {start_string} [string]:start_string
820 | {mid_string} [string]:mid_string
821 | {end_string} [string]:end_string
822 | {superstring} [exprs]:expr* annotations?
823 | {par} opar expr cpar annotations?
824 | {as_cast} expr kwas opar type cpar
825 | {as_notnull} expr kwas opar kwnot kwnull cpar
826 | {isset_attr} kwisset expr [id]:attrid
827 | {debug_type} kwdebug kwtype expr type
830 = {list} [exprs]:expr*
831 | {par} opar [exprs]:expr* cpar
832 | {bra} obra [exprs]:expr* cbra
839 module_name = quad? [path]:id* id;
840 extern_calls = kwimport [extern_calls]:extern_call*
844 | {local_prop} methid
845 | {full_prop} classid quad? methid
846 | {init_prop} classid
847 | {cast_as} [from_type]:type kwas [to_type]:type
848 | {as_nullable} type kwas kwnullable
849 | {as_not_nullable} type kwas kwnot kwnullable
851 in_language = kwin string;
852 extern_code_block = in_language? extern_code_segment;
854 qualified = id* classid? ;
858 annotations = at? opar? [items]:annotation* cpar?;
860 annotation = atid opar? [args]:at_arg* cpar? annotations?;
867 atid = {id} id | {kwextern} [id]:kwextern | {kwintern} [id]:kwintern | {kwreadable} [id]:kwreadable | {kwwritable} [id]:kwwritable | {kwimport} [id]:kwimport;
869 /*****************************************************************************/