2 /* This file is part of NIT ( http://www.nitlanguage.org ).
4 * Copyright 2008-2009 Jean Privat <jean@pryen.org>
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
19 /* This grammar defines the NIT language. */
21 /*****************************************************************************/
23 /*****************************************************************************/
26 lowercase = ['a' .. 'z'];
27 uppercase = ['A' .. 'Z'];
29 letter = lowercase | uppercase | digit | '_';
34 any = [all - [cr + lf]];
36 // characers inside strings and super-strings (atomaton powaa)
38 = [any - [['"' + '{'] + '\']]
43 eol_helper = cr lf | cr | lf; // This takes care of different platforms
45 /*****************************************************************************/
47 /*****************************************************************************/
51 /*****************************************************************************/
53 /*****************************************************************************/
58 comment = '#' any* eol_helper;
60 kwmodule = 'package'|'module';
63 kwabstract = 'abstract';
64 kwinterface = 'interface';
65 kwenum = 'universal'|'enum';
66 kwspecial = 'special';
74 kwreadable = 'readable';
75 kwwritable = 'writable';
79 kwprotected = 'protected';
80 kwprivate = 'private';
81 kwintrude = 'intrude';
93 kwcontinue = 'continue';
106 kwnullable = 'nullable';
139 classid = uppercase letter*;
140 id = lowercase letter*;
141 attrid = '_' lowercase letter*;
144 float = digit* '.' digit+;
145 char = ''' [any - ''']* ''';
146 string = '"' str_body '"';
147 start_string = '"' str_body '{';
148 mid_string = '}' str_body '{';
149 end_string = '}' str_body '"';
152 /*****************************************************************************/
154 /*****************************************************************************/
158 /*****************************************************************************/
160 /*****************************************************************************/
162 /* MODULES *******************************************************************/
164 = moduledecl? [imports]:import* [classdefs]:classdef* implicit_top_class? implicit_main_class? {-> New module(moduledecl, [imports.import],[classdefs.classdef,implicit_top_class.classdef,implicit_main_class.classdef])};
167 = [doc]:no kwmodule no module_name [n2]:n1 {-> New moduledecl(doc.doc, kwmodule, module_name)};
170 = {std} [doc]:no visibility kwimport no module_name [n2]:n1 {-> New import.std(visibility, kwimport, module_name)}
171 | {no} [doc]:no visibility kwimport no kwend [n2]:n1 {-> New import.no(visibility, kwimport, kwend)}
174 implicit_top_class {-> classdef}
175 = propdefs_toplevel+ {-> New classdef.top([propdefs_toplevel.propdef])};
177 implicit_main_class {-> classdef?}
178 = implicit_main_meth {-> New classdef.main([implicit_main_meth.propdef])}
181 implicit_main_meth {-> propdef}
182 = [doc]:no stmts {-> New propdef.main_meth(Null, stmts.expr)}
183 | {n} [doc]:no stmtsn {-> New propdef.main_meth(Null, stmtsn.expr)}
186 /* CLASSES *******************************************************************/
188 = [doc]:no redef visibility classkind no classid formaldefs? [specials]:special* propdefs* [n2]:no kwend {-> New classdef.std(doc.doc, redef.kwredef, visibility, classkind, classid, [formaldefs.formaldef], [specials.superclass], [propdefs.propdef], kwend)};
190 = kwredef? {-> kwredef};
193 | {abstract} kwabstract kwclass
194 | {interface} kwinterface
199 formaldefs {-> formaldef*}
200 = obra no formaldef formaldefs_tail* [n2]:no cbra {-> [formaldef, formaldefs_tail.formaldef]};
201 formaldefs_tail {-> formaldef}
202 = comma no formaldef {-> formaldef};
204 = classid typing? {-> New formaldef(classid, typing.type)};
206 special {-> superclass}
207 = {special} no kwspecial [n2]:no type {-> New superclass(kwspecial, Null, type)}
208 | {super} no kwsuper [n2]:no type {-> New superclass(Null, kwsuper, type)}
211 propdefs~toplevel {-> propdef}
212 = propdef~toplevel n1 {-> propdef~toplevel.propdef}
214 propdef~toplevel {-> propdef}
215 = {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)}
216 | {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)}
217 !toplevel| {deferred} [doc]:no redef visibility kwmeth methid signature kwis kwabstract {-> New propdef.deferred_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)}
218 !toplevel| {intern} [doc]:no redef visibility kwmeth methid signature kwis kwintern {-> New propdef.intern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)}
219 | {extern} [doc]:no redef visibility kwmeth methid signature kwis kwextern string? extern_calls? {-> New propdef.extern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature, string, extern_calls)}
220 !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)}
221 !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)}
222 !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)}
223 !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)}
224 !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)}
225 !toplevel| {type} [doc]:no redef visibility kwtype classid typing {-> New propdef.type(doc.doc, redef.kwredef, visibility, kwtype, classid, typing.type)}
226 !toplevel| {extern_init} [doc]:no redef visibility kwnew methid? signature kwis kwextern string? extern_calls? {-> New propdef.extern_init(doc.doc, redef.kwredef, visibility, kwnew, methid, signature, string, extern_calls)}
229 = redef kwreadable {-> New able.read(redef.kwredef, kwreadable)}
232 = redef kwwritable {-> New able.write(redef.kwredef, Null, kwwritable)}
235 = redef visibility kwwritable {-> New able.write(redef.kwredef, visibility, kwwritable)}
239 = {public} {-> New visibility.public()}
240 | {private} kwprivate no {-> New visibility.private(kwprivate)}
241 | {protected} kwprotected no {-> New visibility.protected(kwprotected)}
242 | {intrude} kwintrude no {-> New visibility.intrude(kwintrude)}
246 = {id} id {-> New methid.id(id)}
247 | {plus} plus {-> New methid.plus(plus)}
248 | {minus} minus {-> New methid.minus(minus)}
249 | {star} star {-> New methid.star(star)}
250 | {slash} slash {-> New methid.slash(slash)}
251 | {percent} percent {-> New methid.percent(percent)}
252 | {eq} eq {-> New methid.eq(eq)}
253 | {ne} ne {-> New methid.ne(ne)}
254 | {le} le {-> New methid.le(le)}
255 | {ge} ge {-> New methid.ge(ge)}
256 | {lt} lt {-> New methid.lt(lt)}
257 | {gt} gt {-> New methid.gt(gt)}
258 | {ll} ll {-> New methid.ll(ll)}
259 | {gg} gg {-> New methid.gg(gg)}
260 | {bra} obra cbra {-> New methid.bra(obra, cbra)}
261 | {starship} starship {-> New methid.starship(starship)}
262 | {assign} id assign {-> New methid.assign(id, assign)}
263 | {braassign} obra cbra assign {-> New methid.braassign(obra, cbra, assign)}
266 signature~withret {-> signature}
267 = params? typing closure_decls {-> New signature([params.param], typing.type, [closure_decls.closure_decl])}
268 | {noclosures} params? typing no {-> New signature([params.param], typing.type, [])}
269 !withret| {noret} params? closure_decls {-> New signature([params.param], Null, [closure_decls.closure_decl])}
270 !withret| {noretnoclosures} params? no {-> New signature([params.param], Null, [])}
273 signature_noclosures {-> signature}
274 = params? typing? {-> New signature([params.param], typing.type, [])};
277 = opar no param params_tail* [n2]:no cpar {-> [param, params_tail.param]}
278 | {empty} opar no cpar {-> []}
280 params_tail {-> param}
281 = comma no param {-> param};
283 = {untyped} id {-> New param(id, Null, Null)}
284 | id typing dotdotdot? {-> New param(id, typing.type, dotdotdot)}
287 closure_decls {->closure_decl*}
288 = no closure_decl+ {-> [closure_decl]};
290 = kwbreak? bang id signature_noclosures n {-> New closure_decl(kwbreak, bang, id, signature_noclosures.signature, Null)}
291 | {optionnal} kwbreak? bang id signature_noclosures kwdo stmtso n {-> New closure_decl(kwbreak, bang, id, signature_noclosures.signature, stmtso.expr)}
292 | {assign} kwbreak? bang id signature_noclosures assign no assign_continue n {-> New closure_decl(kwbreak, bang, id, signature_noclosures.signature, assign_continue.expr)}
295 assign_return{-> expr}
296 = expr_final {-> New expr.return(Null, expr_final.expr)}
299 extern_calls {-> extern_calls}
300 = kwimport no extern_call extern_call_tail* {-> New extern_calls( kwimport, [extern_call, extern_call_tail.extern_call] )}
302 extern_call_tail {-> extern_call}
303 = comma no extern_call {-> extern_call};
304 extern_call {-> extern_call}
305 = {prop} extern_call_prop {-> extern_call_prop.extern_call}
306 | {cast} extern_call_cast {-> extern_call_cast.extern_call}
307 | {super} kwsuper {-> New extern_call.super( kwsuper )}
309 extern_call_prop {-> extern_call}
310 = {local} methid {-> New extern_call.local_prop( methid )}
311 | {full} classid quad methid {-> New extern_call.full_prop( classid, quad, methid )}
312 | {init} classid {-> New extern_call.init_prop( classid )}
314 extern_call_cast {-> extern_call}
315 = {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)}
316 | {as_nullable} type kwas [n2]:no kwnullable {-> New extern_call.as_nullable( type, kwas, kwnullable)}
317 | {as_not_nullable} type kwas [n2]:no kwnot [n3]:no kwnullable {-> New extern_call.as_not_nullable( type, kwas, kwnot, kwnullable)}
321 /* TYPES *********************************************************************/
323 = {simple} kwnullable? classid {-> New type(kwnullable, classid, [])}
324 !nobra | {generic} kwnullable? classid obra no types [n2]:no cbra {-> New type(kwnullable, classid, [types.type])}
327 = type types_tail* {-> [type, types_tail.type]};
329 = comma no type {-> type};
331 = column no type {-> type};
333 /* STATMENTS *****************************************************************/
334 stmtso~withelse~withend {-> expr?}
335 = {block} n stmtsnend {-> stmtsnend.expr}
336 | {emptyblock} n kwend {-> New expr.block([], kwend)}
337 | {emptyoneline} kwend {-> New expr.block([], kwend)}
338 !withend| {oneline} stmt~withelse {-> stmt~withelse.expr}
341 = stmt stmts_tail* {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
343 = stmt stmts_tail* n {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
345 = stmt stmts_tail* n kwend {-> New expr.block([stmt.expr, stmts_tail.expr], kwend)};
347 = n stmt {-> stmt.expr};
348 stmt~withelse {-> expr}
349 = {vardecl} vardecl~withelse {-> vardecl~withelse.expr}
350 | {assign} assignment~withelse {-> assignment~withelse.expr}
351 | {return} kwreturn expr_final~withelse? {-> New expr.return(kwreturn, expr_final~withelse.expr)}
352 | {break} kwbreak label? expr_final~withelse? {-> New expr.break(kwbreak, label, expr_final~withelse.expr)}
353 | {abort} kwabort {-> New expr.abort(kwabort)}
354 | {continue} kwcontinue label? expr_final~withelse? {-> New expr.continue(kwcontinue, label, expr_final~withelse.expr)}
355 | {do} do~withelse {-> do~withelse.expr}
356 | {if} if~withelse {-> if~withelse.expr}
357 | {while} while~withelse {-> while~withelse.expr}
358 | {loop} loop~withelse {-> loop~withelse.expr}
359 | {for} for~withelse {-> for~withelse.expr}
360 | {assert} assert~withelse {-> assert~withelse.expr}
361 | {call} recv id args_nopar closure_defs~withelse? {-> New expr.call(recv.expr, id, [args_nopar.expr], [closure_defs~withelse.closure_def])}
362 | {super} qualified? kwsuper args_nopar {-> New expr.super(qualified, kwsuper, [args_nopar.expr])}
363 | {init} recv kwinit args_nopar {-> New expr.init(recv.expr, kwinit, [args_nopar.expr])}
368 closure_defs~withelse {-> closure_def*}
369 = {one} closure_def_last~withelse {-> [closure_def_last~withelse.closure_def]}
370 | closure_def closure_defs~withelse {-> [closure_def, closure_defs~withelse.closure_def]}
373 closure_def_last~withelse {-> closure_def}
374 = bang [id]:closure_id idlist? kwdo stmtso_withend label {-> New closure_def(bang, id, [idlist.id], kwdo, stmtso_withend.expr, label)}
375 | {nolabel} bang [id]:closure_id idlist? kwdo stmtso~withelse {-> New closure_def(bang, id, [idlist.id], kwdo, stmtso~withelse.expr, Null)}
376 | {assign} bang [id]:closure_id idlist? assign no assign_continue~withelse {-> New closure_def(bang, id, [idlist.id], Null, assign_continue~withelse.expr, Null)}
379 closure_def {-> closure_def}
380 = bang [id]:closure_id idlist? kwdo n stmtsn {-> New closure_def(bang, id, [idlist.id], kwdo, stmtsn.expr, Null)}
381 | {empty} bang [id]:closure_id idlist? kwdo n {-> New closure_def(bang, id, [idlist.id], kwdo, Null, Null)}
388 assign_continue~withelse{-> expr}
389 = expr_final~withelse {-> New expr.continue(Null, Null, expr_final~withelse.expr)}
392 vardecl~withelse{-> expr}
393 = kwvar id typing? {-> New expr.vardecl(kwvar, id, typing.type, Null, Null)}
394 | {assign} kwvar id typing? assign no expr_final~withelse {-> New expr.vardecl(kwvar, id, typing.type, assign, expr_final~withelse.expr)}
397 assignment~withelse {-> expr}
398 = {attr} recv attrid assign expr_final~withelse {-> New expr.attr_assign(recv.expr, attrid, assign, expr_final~withelse.expr)}
399 | {call} recv id args assign expr_final~withelse {-> New expr.call_assign(recv.expr, id, [args.expr], assign, expr_final~withelse.expr)}
400 | {bra} expr_atom braargs assign expr_final~withelse {-> New expr.bra_assign(expr_atom.expr, [braargs.expr], assign, expr_final~withelse.expr)}
401 | {attr_re} recv attrid assign_op expr_final~withelse {-> New expr.attr_reassign(recv.expr, attrid, assign_op, expr_final~withelse.expr)}
402 | {call_re} recv id args assign_op expr_final~withelse {-> New expr.call_reassign(recv.expr, id, [args.expr], assign_op, expr_final~withelse.expr)}
403 | {bra_re} expr_atom braargs assign_op expr_final~withelse {-> New expr.bra_reassign(expr_atom.expr, [braargs.expr], assign_op, expr_final~withelse.expr)}
410 do~withelse {-> expr}
411 = kwdo stmtso_withend label {-> New expr.do(kwdo, stmtso_withend.expr, label)}
412 | {nolabel} kwdo stmtso~withelse {-> New expr.do(kwdo, stmtso~withelse.expr, Null)}
415 if~withelse {-> expr}
416 = {onelineelse} kwif no expr [n2]:no kwthen stmt_withelse kwelse stmtso~withelse {-> New expr.if(kwif, expr, stmt_withelse.expr, stmtso~withelse.expr)}
417 !withelse | {oneline} kwif no expr [n2]:no kwthen stmt {-> New expr.if(kwif, expr, stmt.expr, Null)}
418 !withelse | {block} kwif no expr [n2]:no kwthen [n3]:n stmtsn elsepartblock {-> New expr.if(kwif, expr, stmtsn.expr, elsepartblock.expr)}
419 !withelse | {emptyblock} kwif no expr [n2]:no kwthen [n3]:n? elsepartblock {-> New expr.if(kwif, expr, Null, elsepartblock.expr)}
421 elsepartblock {-> expr?}
422 = {else} kwelse stmtso {-> stmtso.expr}
423 | {empty} kwend {-> New expr.block([], kwend)}
426 loop~withelse {-> expr}
427 = kwloop stmtso_withend label {-> New expr.loop(kwloop, stmtso_withend.expr, label)}
428 | {nolabel} kwloop stmtso~withelse {-> New expr.loop(kwloop, stmtso~withelse.expr, Null)}
431 while~withelse {-> expr}
432 = kwwhile no expr [n2]:no kwdo stmtso_withend label {-> New expr.while(kwwhile, expr, kwdo, stmtso_withend.expr, label)}
433 | {nolabel} kwwhile no expr [n2]:no kwdo stmtso~withelse {-> New expr.while(kwwhile, expr, kwdo, stmtso~withelse.expr, Null)}
436 for~withelse {-> expr}
437 = 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)}
438 | {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)}
441 assert~withelse {-> expr}
442 = {else} kwassert assertid? expr_final_withelse kwelse stmtso~withelse {-> New expr.assert(kwassert, assertid.id, expr_final_withelse.expr, stmtso~withelse.expr)}
443 !withelse| {noelse} kwassert assertid? expr_final {-> New expr.assert(kwassert, assertid.id, expr_final.expr, Null)}
448 /* EXPRESSIONS ***************************************************************/
449 expr_final~nopar~withelse~nobra {-> expr}
450 = expr~nopar~nobra {-> expr~nopar~nobra.expr}
451 | {closure_call} recv~nobra id args closure_defs~withelse {-> New expr.call(recv~nobra.expr, id, [args.expr], [closure_defs~withelse.closure_def])}
452 !nobra!nopar | {closure_bra} expr_atom braargs closure_defs~withelse {-> New expr.bra(expr_atom.expr, [braargs.expr], [closure_defs~withelse.closure_def])}
455 expr~nopar~nobra {-> expr}
456 = expr_and~nopar~nobra {-> expr_and~nopar~nobra.expr}
457 | {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)}
460 expr_and~nopar~nobra {-> expr}
461 = expr_not~nopar~nobra {-> expr_not~nopar~nobra.expr}
462 | {or} expr_and~nopar~nobra kwor no expr_not~nopar~nobra {-> New expr.or(expr_and~nopar~nobra.expr, expr_not~nopar~nobra.expr)}
463 | {and} expr_and~nopar~nobra kwand no expr_not~nopar~nobra {-> New expr.and(expr_and~nopar~nobra.expr, expr_not~nopar~nobra.expr)}
464 | {or_else} expr_and~nopar~nobra kwor kwelse no expr_not~nopar~nobra {-> New expr.or_else(expr_and~nopar~nobra.expr, expr_not~nopar~nobra.expr)}
467 expr_not~nopar~nobra {-> expr}
468 = expr_eq~nopar~nobra {-> expr_eq~nopar~nobra.expr}
469 | {not} kwnot no expr_not~nopar~nobra {-> New expr.not(kwnot, expr_not~nopar~nobra.expr)}
472 expr_eq~nopar~nobra {-> expr}
473 = expr_add~nopar~nobra {-> expr_add~nopar~nobra.expr}
474 | {eq} expr_add~nopar~nobra eq no [expr2]:expr_add~nopar~nobra {-> New expr.eq(expr_add~nopar~nobra.expr, expr2.expr)}
475 | {ee} expr_add~nopar~nobra kwis no [expr2]:expr_add~nopar~nobra {-> New expr.ee(expr_add~nopar~nobra.expr, expr2.expr)}
476 | {ne} expr_add~nopar~nobra ne no [expr2]:expr_add~nopar~nobra {-> New expr.ne(expr_add~nopar~nobra.expr, expr2.expr)}
477 | {lt} expr_add~nopar~nobra lt no [expr2]:expr_add~nopar~nobra {-> New expr.lt(expr_add~nopar~nobra.expr, expr2.expr)}
478 | {le} expr_add~nopar~nobra le no [expr2]:expr_add~nopar~nobra {-> New expr.le(expr_add~nopar~nobra.expr, expr2.expr)}
479 | {ll} expr_eq~nopar~nobra ll no [expr2]:expr_add~nopar~nobra {-> New expr.ll(expr_eq~nopar~nobra.expr, expr2.expr)}
480 | {gt} expr_add~nopar~nobra gt no [expr2]:expr_add~nopar~nobra {-> New expr.gt(expr_add~nopar~nobra.expr, expr2.expr)}
481 | {ge} expr_add~nopar~nobra ge no [expr2]:expr_add~nopar~nobra {-> New expr.ge(expr_add~nopar~nobra.expr, expr2.expr)}
482 | {gg} expr_eq~nopar~nobra gg no [expr2]:expr_add~nopar~nobra {-> New expr.gg(expr_eq~nopar~nobra.expr, expr2.expr)}
483 | {starship} expr_add~nopar~nobra starship no [expr2]:expr_add~nopar~nobra {-> New expr.starship(expr_add~nopar~nobra.expr, expr2.expr)}
484 | {isa} expr_add~nopar~nobra kwisa no type~nobra {-> New expr.isa(expr_add~nopar~nobra.expr, type~nobra.type)}
487 expr_add~nopar~nobra {-> expr}
488 = expr_mul~nopar~nobra {-> expr_mul~nopar~nobra.expr}
489 | {plus} expr_add~nopar~nobra plus no [expr2]:expr_mul~nopar~nobra {-> New expr.plus(expr_add~nopar~nobra.expr, expr2.expr)}
490 | {minus} expr_add~nopar~nobra minus no [expr2]:expr_mul~nopar~nobra {-> New expr.minus(expr_add~nopar~nobra.expr, expr2.expr)}
493 expr_mul~nopar~nobra {-> expr}
494 = expr_minus~nopar~nobra {-> expr_minus~nopar~nobra.expr}
495 | {star} expr_mul~nopar~nobra star no [expr2]:expr_minus~nopar~nobra {-> New expr.star(expr_mul~nopar~nobra.expr, expr2.expr)}
496 | {slash} expr_mul~nopar~nobra slash no [expr2]:expr_minus~nopar~nobra {-> New expr.slash(expr_mul~nopar~nobra.expr, expr2.expr)}
497 | {percent} expr_mul~nopar~nobra percent no [expr2]:expr_minus~nopar~nobra {-> New expr.percent(expr_mul~nopar~nobra.expr, expr2.expr)}
500 expr_minus~nopar~nobra {-> expr}
501 = expr_new~nopar~nobra {-> expr_new~nopar~nobra.expr}
502 | {minus} minus no expr_minus~nopar~nobra {-> New expr.uminus(minus, expr_minus~nopar~nobra.expr)}
503 | {once} kwonce no expr_minus~nopar~nobra {-> New expr.once(kwonce, expr_minus~nopar~nobra.expr)}
506 expr_new~nopar~nobra {-> expr}
507 = expr_atom~nopar~nobra {-> expr_atom~nopar~nobra.expr}
508 | {new} kwnew no type~nobra args {-> New expr.new(kwnew, type~nobra.type, Null, [args.expr])}
509 | {isset_attr} kwisset recv~nopar~nobra attrid {-> New expr.isset_attr(kwisset, recv~nopar~nobra.expr, attrid)}
512 expr_atom~nopar~nobra {-> expr}
513 = {attr} recv~nopar~nobra attrid {-> New expr.attr(recv~nopar~nobra.expr, attrid)}
514 | {call} recv~nopar~nobra id args {-> New expr.call(recv~nopar~nobra.expr, id, [args.expr], [])}
515 | {super} qualified? kwsuper args {-> New expr.super(qualified, kwsuper, [args.expr])}
516 | {init} recv~nopar~nobra kwinit args {-> New expr.init(recv~nopar~nobra.expr, kwinit, [args.expr])}
517 !nobra | {bra} expr_atom~nopar braargs {-> New expr.bra(expr_atom~nopar.expr, [braargs.expr], [])}
518 | {new} kwnew no type~nobra dot [n2]:no id args {-> New expr.new(kwnew, type~nobra.type, id, [args.expr])}
519 // !nopar to unambiguise 'foo[5].bar' between '(foo[5]).bar' and 'foo([5].bar),
520 !nobra!nopar | {range} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no cbra {-> New expr.crange(expr, expr2.expr)}
521 !nobra!nopar | {orange} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no [cbra]:obra {-> New expr.orange(expr, expr2.expr)}
522 !nobra!nopar | {array} braargs {-> New expr.array([braargs.expr])}
523 | {self} kwself {-> New expr.self(kwself)}
524 | {true} kwtrue {-> New expr.true(kwtrue)}
525 | {false} kwfalse {-> New expr.false(kwfalse)}
526 | {null} kwnull {-> New expr.null(kwnull)}
527 | {int} number {-> New expr.int(number)}
528 | {float} float {-> New expr.float(float)}
529 | {char} char {-> New expr.char(char)}
530 | {string} string {-> New expr.string(string)}
531 | {superstring} superstring {-> superstring.expr}
532 !nopar | {par} opar expr cpar {-> expr}
533 | {as_cast} expr_atom~nopar~nobra dot no kwas [n2]:no opar [n3]:no type [n4]:no cpar {-> New expr.as_cast(expr_atom~nopar~nobra.expr, kwas, type)}
534 | {as_notnull} expr_atom~nopar~nobra dot no kwas [n2]:no opar [n3]:no kwnot [n4]:no kwnull [n5]:no cpar {-> New expr.as_notnull(expr_atom~nopar~nobra.expr, kwas, kwnot, kwnull)}
537 superstring {-> expr}
538 = superstring_start superstring_middle* superstring_end {-> New expr.superstring([superstring_start.expr, superstring_middle.expr, superstring_end.expr])};
539 superstring_start {-> expr*}
540 = start_string_p no expr [n2]:no {-> [start_string_p.expr, expr]};
541 start_string_p {-> expr}
542 = start_string {-> New expr.start_string(start_string)};
543 superstring_middle {-> expr*}
544 = mid_string_p no expr [n2]:no {-> [mid_string_p.expr, expr]};
545 mid_string_p {-> expr}
546 = mid_string {-> New expr.mid_string(mid_string)};
547 superstring_end {-> expr}
548 = end_string {-> New expr.end_string(end_string)};
550 /* MISC **********************************************************************/
552 recv~nopar~nobra {-> expr}
553 = expr_atom~nopar~nobra dot no {-> expr_atom~nopar~nobra.expr}
554 | {implicit} {-> New expr.implicit_self()}
558 = opar no expr [n2]:no args_tail* cpar {-> [expr, args_tail.expr]}
559 | {emptypar} opar no cpar {-> []}
562 args_nopar {-> expr*}
563 = opar no expr [n2]:no args_tail* cpar {-> [expr, args_tail.expr]}
564 | {onearg} expr_nopar {-> [expr_nopar.expr]}
565 | {emptypar} opar no cpar {-> []}
569 = obra no expr [n2]:no args_tail* cbra {-> [expr, args_tail.expr]};
571 = comma no expr [n2]:no {-> expr};
573 = opar idlist_nopar cpar {-> [idlist_nopar.id]}
574 | {nopar} idlist_nopar {-> [idlist_nopar.id]}
576 idlist_nopar {-> id*}
577 = {single} id {-> [id]}
578 | {more} idlist_nopar no comma [n2]:no id {-> [idlist_nopar.id, id]}
581 module_name {-> module_name}
582 = {mod} modquad* id {-> New module_name(Null, [modquad.id], id)}
583 | {root} quad no modquad* id {-> New module_name(quad, [modquad.id], id)}
587 = {cla} modquad* classquad {-> New qualified([modquad.id], classquad.classid)}
588 | {mod} modquad+ {-> New qualified([modquad.id], Null)}
591 = id quad no {-> id};
592 classquad {-> classid}
593 = classid quad no {-> classid};
595 n1 = {a} comment | {b} eol;
597 = {a} n2? comment+ {-> New doc([comment])}
606 = {a} n2? comment+ eol+
610 /*****************************************************************************/
612 /*****************************************************************************/
614 module = moduledecl? [imports]:import* [classdefs]:classdef*;
617 = doc? kwmodule [name]:module_name;
619 import = {std} visibility kwimport [name]:module_name
620 | {no} visibility kwimport kwend
625 | {private} kwprivate
626 | {protected} kwprotected
627 | {intrude} kwintrude
630 classdef= {std} doc? kwredef? visibility classkind [id]:classid? [formaldefs]:formaldef* [superclasses]:superclass* [propdefs]:propdef* kwend
631 | {top} [propdefs]:propdef*
632 | {main} [propdefs]:propdef*
636 | {abstract} kwabstract kwclass
637 | {interface} kwinterface
641 formaldef = [id]:classid type?;
642 superclass = kwspecial? kwsuper? type;
645 propdef = {attr} doc? [readable]:able? [writable]:able? kwredef? visibility kwvar [id]:attrid? [id2]:id? type? expr?
646 | {meth} doc? kwredef? visibility methid signature
647 | {deferred_meth} doc? kwredef? visibility kwmeth methid signature
648 | {intern_meth} doc? kwredef? visibility kwmeth methid signature
649 | {extern_meth} doc? kwredef? visibility kwmeth methid signature [extern]:string? extern_calls?
650 | {concrete_meth} doc? kwredef? visibility kwmeth methid signature [block]:expr?
651 | {concrete_init} doc? kwredef? visibility kwinit methid? signature [block]:expr?
652 | {extern_init} doc? kwredef? visibility kwnew methid? signature [extern]:string? extern_calls?
653 | {main_meth} kwredef? [block]:expr?
654 | {type} doc? kwredef? visibility kwtype [id]:classid type
657 able = {read} kwredef? kwreadable
658 | {write} kwredef? visibility? kwwritable
661 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;
663 signature = [params]:param* type? [closure_decls]:closure_decl*;
665 param = id type? dotdotdot?
668 closure_decl = kwbreak? bang id signature expr?
671 type = kwnullable? [id]:classid [types]:type*;
675 expr = {block} expr* kwend?
676 | {vardecl} kwvar id type? assign? expr?
677 | {return} kwreturn? expr?
678 | {break} kwbreak label? expr?
680 | {continue} kwcontinue? label? expr?
681 | {do} kwdo [block]:expr? label?
682 | {if} kwif expr [then]:expr? [else]:expr?
683 | {ifexpr} kwif expr kwthen [then]:expr kwelse [else]:expr
684 | {while} kwwhile expr kwdo [block]:expr? label?
685 | {loop} kwloop [block]:expr? label?
686 | {for} kwfor [ids]:id* expr kwdo [block]:expr? label?
687 | {assert} kwassert id? expr [else]:expr?
690 | {binop} expr [expr2]:expr
691 | {or} expr [expr2]:expr
692 | {and} expr [expr2]:expr
693 | {or_else} expr [expr2]:expr
695 | {eq} expr [expr2]:expr
696 | {ee} expr [expr2]:expr
697 | {ne} expr [expr2]:expr
698 | {lt} expr [expr2]:expr
699 | {le} expr [expr2]:expr
700 | {ll} expr [expr2]:expr
701 | {gt} expr [expr2]:expr
702 | {ge} expr [expr2]:expr
703 | {gg} expr [expr2]:expr
705 | {plus} expr [expr2]:expr
706 | {minus} expr [expr2]:expr
707 | {starship} expr [expr2]:expr
708 | {star} expr [expr2]:expr
709 | {slash} expr [expr2]:expr
710 | {percent} expr [expr2]:expr
711 | {uminus} minus expr
712 | {new} kwnew type id? [args]:expr*
713 | {attr} expr [id]:attrid
714 | {attr_assign} expr [id]:attrid assign [value]:expr
715 | {attr_reassign} expr [id]:attrid assign_op [value]:expr
716 | {call} expr id [args]:expr* [closure_defs]:closure_def*
717 | {call_assign} expr id [args]:expr* assign [value]:expr
718 | {call_reassign} expr id [args]:expr* assign_op [value]:expr
719 | {super} qualified? kwsuper [args]:expr*
720 | {init} expr kwinit [args]:expr*
721 | {bra} expr [args]:expr* [closure_defs]:closure_def*
722 | {bra_assign} expr [args]:expr* assign [value]:expr
723 | {bra_reassign} expr [args]:expr* assign_op [value]:expr
724 | {closure_call} id [args]:expr* [closure_defs]:closure_def*
726 | {var_assign} id assign [value]:expr
727 | {var_reassign} id assign_op [value]:expr
728 | {range} expr [expr2]:expr
729 | {crange} expr [expr2]:expr
730 | {orange} expr [expr2]:expr
731 | {array} [exprs]:expr*
741 | {start_string} [string]:start_string
742 | {mid_string} [string]:mid_string
743 | {end_string} [string]:end_string
744 | {superstring} [exprs]:expr*
746 | {as_cast} expr kwas type
747 | {as_notnull} expr kwas kwnot kwnull
748 | {isset_attr} kwisset expr [id]:attrid
756 = bang [id]:closure_id [ids]:id* kwdo? expr? label?
763 module_name = quad? [path]:id* id;
764 extern_calls = kwimport [extern_calls]:extern_call*
768 | {local_prop} methid
769 | {full_prop} classid quad? methid
770 | {init_prop} classid
771 | {cast_as} [from_type]:type kwas [to_type]:type
772 | {as_nullable} type kwas kwnullable
773 | {as_not_nullable} type kwas kwnot kwnullable
776 qualified = id* classid? ;
780 /*****************************************************************************/