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';
109 kwdebug = '__debug__';
140 classid = uppercase letter*;
141 id = lowercase letter*;
142 attrid = '_' lowercase letter*;
145 float = digit* '.' digit+;
146 char = (''' [[any - '''] - '\'] ''') | (''' '\' any ''');
147 string = '"' str_body '"';
148 start_string = '"' str_body '{';
149 mid_string = '}' str_body '{';
150 end_string = '}' str_body '"';
151 bad_char = ''' '\'? any;
152 bad_string = ('"'|'}') str_body;
155 /*****************************************************************************/
157 /*****************************************************************************/
161 /*****************************************************************************/
163 /*****************************************************************************/
165 /* MODULES *******************************************************************/
167 = 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])};
170 = [doc]:no kwmodule no module_name [n2]:n1 {-> New moduledecl(doc.doc, kwmodule, module_name)};
173 = {std} [doc]:no visibility kwimport no module_name [n2]:n1 {-> New import.std(visibility, kwimport, module_name)}
174 | {no} [doc]:no visibility kwimport no kwend [n2]:n1 {-> New import.no(visibility, kwimport, kwend)}
177 implicit_top_class {-> classdef}
178 = propdefs_toplevel+ {-> New classdef.top([propdefs_toplevel.propdef])};
180 implicit_main_class {-> classdef?}
181 = implicit_main_meth {-> New classdef.main([implicit_main_meth.propdef])}
184 implicit_main_meth {-> propdef}
185 = [doc]:no stmts {-> New propdef.main_meth(Null, stmts.expr)}
186 | {n} [doc]:no stmtsn {-> New propdef.main_meth(Null, stmtsn.expr)}
189 /* CLASSES *******************************************************************/
191 = [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)};
193 = kwredef? {-> kwredef};
196 | {abstract} kwabstract kwclass
197 | {interface} kwinterface
202 formaldefs {-> formaldef*}
203 = obra no formaldef formaldefs_tail* [n2]:no cbra {-> [formaldef, formaldefs_tail.formaldef]};
204 formaldefs_tail {-> formaldef}
205 = comma no formaldef {-> formaldef};
207 = classid typing? {-> New formaldef(classid, typing.type)};
209 special {-> superclass}
210 = {special} no kwspecial [n2]:no type {-> New superclass(kwspecial, Null, type)}
211 | {super} no kwsuper [n2]:no type {-> New superclass(Null, kwsuper, type)}
214 propdefs~toplevel {-> propdef}
215 = propdef~toplevel n1 {-> propdef~toplevel.propdef}
217 propdef~toplevel {-> propdef}
218 = {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)}
219 | {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)}
220 !toplevel| {deferred} [doc]:no redef visibility kwmeth methid signature kwis kwabstract {-> New propdef.deferred_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)}
221 !toplevel| {intern} [doc]:no redef visibility kwmeth methid signature kwis kwintern {-> New propdef.intern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)}
222 | {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)}
223 !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)}
224 !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)}
225 !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)}
226 !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)}
227 !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)}
228 !toplevel| {type} [doc]:no redef visibility kwtype classid typing {-> New propdef.type(doc.doc, redef.kwredef, visibility, kwtype, classid, typing.type)}
229 !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)}
232 = redef kwreadable {-> New able.read(redef.kwredef, kwreadable)}
235 = redef kwwritable {-> New able.write(redef.kwredef, Null, kwwritable)}
238 = redef visibility kwwritable {-> New able.write(redef.kwredef, visibility, kwwritable)}
242 = {public} {-> New visibility.public()}
243 | {private} kwprivate no {-> New visibility.private(kwprivate)}
244 | {protected} kwprotected no {-> New visibility.protected(kwprotected)}
245 | {intrude} kwintrude no {-> New visibility.intrude(kwintrude)}
249 = {id} id {-> New methid.id(id)}
250 | {plus} plus {-> New methid.plus(plus)}
251 | {minus} minus {-> New methid.minus(minus)}
252 | {star} star {-> New methid.star(star)}
253 | {slash} slash {-> New methid.slash(slash)}
254 | {percent} percent {-> New methid.percent(percent)}
255 | {eq} eq {-> New methid.eq(eq)}
256 | {ne} ne {-> New methid.ne(ne)}
257 | {le} le {-> New methid.le(le)}
258 | {ge} ge {-> New methid.ge(ge)}
259 | {lt} lt {-> New methid.lt(lt)}
260 | {gt} gt {-> New methid.gt(gt)}
261 | {ll} ll {-> New methid.ll(ll)}
262 | {gg} gg {-> New methid.gg(gg)}
263 | {bra} obra cbra {-> New methid.bra(obra, cbra)}
264 | {starship} starship {-> New methid.starship(starship)}
265 | {assign} id assign {-> New methid.assign(id, assign)}
266 | {braassign} obra cbra assign {-> New methid.braassign(obra, cbra, assign)}
269 signature~withret {-> signature}
270 = opar no params? cpar typing [no2]:no closure_decls? {-> New signature(opar, [params.param], cpar, typing.type, [closure_decls.closure_decl])}
271 !withret| {noret} opar no params? cpar [no2]:no closure_decls? {-> New signature(opar, [params.param], cpar, Null, [closure_decls.closure_decl])}
272 | {nopar} typing no closure_decls? {-> New signature(Null, [], Null, typing.type, [closure_decls.closure_decl])}
273 !withret| {noparnoret} no closure_decls? {-> New signature(Null, [], Null, Null, [closure_decls.closure_decl])}
276 signature_noclosures {-> signature}
277 = opar no params? cpar typing? {-> New signature(opar, [params.param], cpar, typing.type, [])}
278 | {nopar} typing? {-> New signature(Null, [], Null, typing.type, [])}
282 = param params_tail* [n2]:no {-> [param, params_tail.param] }
284 params_tail {-> param}
285 = comma no param {-> param};
287 = {untyped} id {-> New param(id, Null, Null)}
288 | id typing dotdotdot? {-> New param(id, typing.type, dotdotdot)}
291 closure_decls {->closure_decl*}
292 = closure_decl+ {-> [closure_decl]};
294 = kwbreak? bang id signature_noclosures n {-> New closure_decl(kwbreak, bang, id, signature_noclosures.signature, Null)}
295 | {optionnal} kwbreak? bang id signature_noclosures kwdo stmtso n {-> New closure_decl(kwbreak, bang, id, signature_noclosures.signature, stmtso.expr)}
296 | {assign} kwbreak? bang id signature_noclosures assign no assign_continue n {-> New closure_decl(kwbreak, bang, id, signature_noclosures.signature, assign_continue.expr)}
299 assign_return{-> expr}
300 = expr_final {-> New expr.return(Null, expr_final.expr)}
303 extern_calls {-> extern_calls}
304 = kwimport no extern_call extern_call_tail* {-> New extern_calls( kwimport, [extern_call, extern_call_tail.extern_call] )}
306 extern_call_tail {-> extern_call}
307 = comma no extern_call {-> extern_call};
308 extern_call {-> extern_call}
309 = {prop} extern_call_prop {-> extern_call_prop.extern_call}
310 | {cast} extern_call_cast {-> extern_call_cast.extern_call}
311 | {super} kwsuper {-> New extern_call.super( kwsuper )}
313 extern_call_prop {-> extern_call}
314 = {local} methid {-> New extern_call.local_prop( methid )}
315 | {full} classid quad methid {-> New extern_call.full_prop( classid, quad, methid )}
316 | {init} classid {-> New extern_call.init_prop( classid )}
318 extern_call_cast {-> extern_call}
319 = {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)}
320 | {as_nullable} type kwas [n2]:no kwnullable {-> New extern_call.as_nullable( type, kwas, kwnullable)}
321 | {as_not_nullable} type kwas [n2]:no kwnot [n3]:no kwnullable {-> New extern_call.as_not_nullable( type, kwas, kwnot, kwnullable)}
325 /* TYPES *********************************************************************/
327 = {simple} kwnullable? classid {-> New type(kwnullable, classid, [])}
328 !nobra | {generic} kwnullable? classid obra no types [n2]:no cbra {-> New type(kwnullable, classid, [types.type])}
331 = type types_tail* {-> [type, types_tail.type]};
333 = comma no type {-> type};
335 = column no type {-> type};
337 /* STATMENTS *****************************************************************/
338 stmtso~withelse~withend {-> expr?}
339 = {block} n stmtsnend {-> stmtsnend.expr}
340 | {emptyblock} n kwend {-> New expr.block([], kwend)}
341 | {emptyoneline} kwend {-> New expr.block([], kwend)}
342 !withend| {oneline} stmt~withelse {-> stmt~withelse.expr}
345 = stmt stmts_tail* {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
347 = stmt stmts_tail* n {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
349 = stmt stmts_tail* n kwend {-> New expr.block([stmt.expr, stmts_tail.expr], kwend)};
351 = n stmt {-> stmt.expr};
352 stmt~withelse {-> expr}
353 = {vardecl} vardecl~withelse {-> vardecl~withelse.expr}
354 | {assign} assignment~withelse {-> assignment~withelse.expr}
355 | {return} kwreturn expr_final~withelse? {-> New expr.return(kwreturn, expr_final~withelse.expr)}
356 | {break} kwbreak label? expr_final~withelse? {-> New expr.break(kwbreak, label, expr_final~withelse.expr)}
357 | {abort} kwabort {-> New expr.abort(kwabort)}
358 | {continue} kwcontinue label? expr_final~withelse? {-> New expr.continue(kwcontinue, label, expr_final~withelse.expr)}
359 | {do} do~withelse {-> do~withelse.expr}
360 | {if} if~withelse {-> if~withelse.expr}
361 | {while} while~withelse {-> while~withelse.expr}
362 | {loop} loop~withelse {-> loop~withelse.expr}
363 | {for} for~withelse {-> for~withelse.expr}
364 | {assert} assert~withelse {-> assert~withelse.expr}
365 | {call} recv id args_nopar closure_defs~withelse? {-> New expr.call(recv.expr, id, args_nopar.exprs, [closure_defs~withelse.closure_def])}
366 | {super} qualified? kwsuper args_nopar {-> New expr.super(qualified, kwsuper, args_nopar.exprs)}
367 | {init} recv kwinit args_nopar {-> New expr.init(recv.expr, kwinit, args_nopar.exprs)}
368 | {debug_type_is} kwdebug kwtype type column expr_final~withelse {-> New expr.debug_type(kwdebug, kwtype, expr_final~withelse.expr, type) }
373 closure_defs~withelse {-> closure_def*}
374 = {one} closure_def_last~withelse {-> [closure_def_last~withelse.closure_def]}
375 | closure_def closure_defs~withelse {-> [closure_def, closure_defs~withelse.closure_def]}
378 closure_def_last~withelse {-> closure_def}
379 = bang [id]:closure_id idlist? kwdo stmtso_withend label {-> New closure_def(bang, id, [idlist.id], kwdo, stmtso_withend.expr, label)}
380 | {nolabel} bang [id]:closure_id idlist? kwdo stmtso~withelse {-> New closure_def(bang, id, [idlist.id], kwdo, stmtso~withelse.expr, Null)}
381 | {assign} bang [id]:closure_id idlist? assign no assign_continue~withelse {-> New closure_def(bang, id, [idlist.id], Null, assign_continue~withelse.expr, Null)}
384 closure_def {-> closure_def}
385 = bang [id]:closure_id idlist? kwdo n stmtsn {-> New closure_def(bang, id, [idlist.id], kwdo, stmtsn.expr, Null)}
386 | {empty} bang [id]:closure_id idlist? kwdo n {-> New closure_def(bang, id, [idlist.id], kwdo, Null, Null)}
393 assign_continue~withelse{-> expr}
394 = expr_final~withelse {-> New expr.continue(Null, Null, expr_final~withelse.expr)}
397 vardecl~withelse{-> expr}
398 = kwvar id typing? {-> New expr.vardecl(kwvar, id, typing.type, Null, Null)}
399 | {assign} kwvar id typing? assign no expr_final~withelse {-> New expr.vardecl(kwvar, id, typing.type, assign, expr_final~withelse.expr)}
402 assignment~withelse {-> expr}
403 = {attr} recv attrid assign expr_final~withelse {-> New expr.attr_assign(recv.expr, attrid, assign, expr_final~withelse.expr)}
404 | {call} recv id args assign expr_final~withelse {-> New expr.call_assign(recv.expr, id, args.exprs, assign, expr_final~withelse.expr)}
405 | {bra} expr_atom braargs assign expr_final~withelse {-> New expr.bra_assign(expr_atom.expr, braargs.exprs, assign, expr_final~withelse.expr)}
406 | {attr_re} recv attrid assign_op expr_final~withelse {-> New expr.attr_reassign(recv.expr, attrid, assign_op, expr_final~withelse.expr)}
407 | {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)}
408 | {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)}
415 do~withelse {-> expr}
416 = kwdo stmtso_withend label {-> New expr.do(kwdo, stmtso_withend.expr, label)}
417 | {nolabel} kwdo stmtso~withelse {-> New expr.do(kwdo, stmtso~withelse.expr, Null)}
420 if~withelse {-> expr}
421 = {onelineelse} kwif no expr [n2]:no kwthen stmt_withelse kwelse stmtso~withelse {-> New expr.if(kwif, expr, stmt_withelse.expr, stmtso~withelse.expr)}
422 !withelse | {oneline} kwif no expr [n2]:no kwthen stmt {-> New expr.if(kwif, expr, stmt.expr, Null)}
423 !withelse | {block} kwif no expr [n2]:no kwthen [n3]:n stmtsn elsepartblock {-> New expr.if(kwif, expr, stmtsn.expr, elsepartblock.expr)}
424 !withelse | {emptyblock} kwif no expr [n2]:no kwthen [n3]:n? elsepartblock {-> New expr.if(kwif, expr, Null, elsepartblock.expr)}
426 elsepartblock {-> expr?}
427 = {else} kwelse stmtso {-> stmtso.expr}
428 | {empty} kwend {-> New expr.block([], kwend)}
431 loop~withelse {-> expr}
432 = kwloop stmtso_withend label {-> New expr.loop(kwloop, stmtso_withend.expr, label)}
433 | {nolabel} kwloop stmtso~withelse {-> New expr.loop(kwloop, stmtso~withelse.expr, Null)}
436 while~withelse {-> expr}
437 = kwwhile no expr [n2]:no kwdo stmtso_withend label {-> New expr.while(kwwhile, expr, kwdo, stmtso_withend.expr, label)}
438 | {nolabel} kwwhile no expr [n2]:no kwdo stmtso~withelse {-> New expr.while(kwwhile, expr, kwdo, stmtso~withelse.expr, Null)}
441 for~withelse {-> expr}
442 = 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)}
443 | {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)}
446 assert~withelse {-> expr}
447 = {else} kwassert assertid? expr_final_withelse kwelse stmtso~withelse {-> New expr.assert(kwassert, assertid.id, expr_final_withelse.expr, stmtso~withelse.expr)}
448 !withelse| {noelse} kwassert assertid? expr_final {-> New expr.assert(kwassert, assertid.id, expr_final.expr, Null)}
453 /* EXPRESSIONS ***************************************************************/
454 expr_final~nopar~withelse~nobra {-> expr}
455 = expr~nopar~nobra {-> expr~nopar~nobra.expr}
456 | {closure_call} recv~nobra id args closure_defs~withelse {-> New expr.call(recv~nobra.expr, id, args.exprs, [closure_defs~withelse.closure_def])}
457 !nobra!nopar | {closure_bra} expr_atom braargs closure_defs~withelse {-> New expr.bra(expr_atom.expr, braargs.exprs, [closure_defs~withelse.closure_def])}
460 expr~nopar~nobra {-> expr}
461 = expr_and~nopar~nobra {-> expr_and~nopar~nobra.expr}
462 | {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)}
465 expr_and~nopar~nobra {-> expr}
466 = expr_not~nopar~nobra {-> expr_not~nopar~nobra.expr}
467 | {or} expr_and~nopar~nobra kwor no expr_not~nopar~nobra {-> New expr.or(expr_and~nopar~nobra.expr, expr_not~nopar~nobra.expr)}
468 | {and} expr_and~nopar~nobra kwand no expr_not~nopar~nobra {-> New expr.and(expr_and~nopar~nobra.expr, expr_not~nopar~nobra.expr)}
469 | {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)}
472 expr_not~nopar~nobra {-> expr}
473 = expr_eq~nopar~nobra {-> expr_eq~nopar~nobra.expr}
474 | {not} kwnot no expr_not~nopar~nobra {-> New expr.not(kwnot, expr_not~nopar~nobra.expr)}
477 expr_eq~nopar~nobra {-> expr}
478 = expr_add~nopar~nobra {-> expr_add~nopar~nobra.expr}
479 | {eq} expr_add~nopar~nobra eq no [expr2]:expr_add~nopar~nobra {-> New expr.eq(expr_add~nopar~nobra.expr, expr2.expr)}
480 | {ee} expr_add~nopar~nobra kwis no [expr2]:expr_add~nopar~nobra {-> New expr.ee(expr_add~nopar~nobra.expr, expr2.expr)}
481 | {ne} expr_add~nopar~nobra ne no [expr2]:expr_add~nopar~nobra {-> New expr.ne(expr_add~nopar~nobra.expr, expr2.expr)}
482 | {lt} expr_add~nopar~nobra lt no [expr2]:expr_add~nopar~nobra {-> New expr.lt(expr_add~nopar~nobra.expr, expr2.expr)}
483 | {le} expr_add~nopar~nobra le no [expr2]:expr_add~nopar~nobra {-> New expr.le(expr_add~nopar~nobra.expr, expr2.expr)}
484 | {ll} expr_eq~nopar~nobra ll no [expr2]:expr_add~nopar~nobra {-> New expr.ll(expr_eq~nopar~nobra.expr, expr2.expr)}
485 | {gt} expr_add~nopar~nobra gt no [expr2]:expr_add~nopar~nobra {-> New expr.gt(expr_add~nopar~nobra.expr, expr2.expr)}
486 | {ge} expr_add~nopar~nobra ge no [expr2]:expr_add~nopar~nobra {-> New expr.ge(expr_add~nopar~nobra.expr, expr2.expr)}
487 | {gg} expr_eq~nopar~nobra gg no [expr2]:expr_add~nopar~nobra {-> New expr.gg(expr_eq~nopar~nobra.expr, expr2.expr)}
488 | {starship} expr_add~nopar~nobra starship no [expr2]:expr_add~nopar~nobra {-> New expr.starship(expr_add~nopar~nobra.expr, expr2.expr)}
489 | {isa} expr_add~nopar~nobra kwisa no type~nobra {-> New expr.isa(expr_add~nopar~nobra.expr, type~nobra.type)}
492 expr_add~nopar~nobra {-> expr}
493 = expr_mul~nopar~nobra {-> expr_mul~nopar~nobra.expr}
494 | {plus} expr_add~nopar~nobra plus no [expr2]:expr_mul~nopar~nobra {-> New expr.plus(expr_add~nopar~nobra.expr, expr2.expr)}
495 | {minus} expr_add~nopar~nobra minus no [expr2]:expr_mul~nopar~nobra {-> New expr.minus(expr_add~nopar~nobra.expr, expr2.expr)}
498 expr_mul~nopar~nobra {-> expr}
499 = expr_minus~nopar~nobra {-> expr_minus~nopar~nobra.expr}
500 | {star} expr_mul~nopar~nobra star no [expr2]:expr_minus~nopar~nobra {-> New expr.star(expr_mul~nopar~nobra.expr, expr2.expr)}
501 | {slash} expr_mul~nopar~nobra slash no [expr2]:expr_minus~nopar~nobra {-> New expr.slash(expr_mul~nopar~nobra.expr, expr2.expr)}
502 | {percent} expr_mul~nopar~nobra percent no [expr2]:expr_minus~nopar~nobra {-> New expr.percent(expr_mul~nopar~nobra.expr, expr2.expr)}
505 expr_minus~nopar~nobra {-> expr}
506 = expr_new~nopar~nobra {-> expr_new~nopar~nobra.expr}
507 | {minus} minus no expr_minus~nopar~nobra {-> New expr.uminus(minus, expr_minus~nopar~nobra.expr)}
508 | {once} kwonce no expr_minus~nopar~nobra {-> New expr.once(kwonce, expr_minus~nopar~nobra.expr)}
511 expr_new~nopar~nobra {-> expr}
512 = expr_atom~nopar~nobra {-> expr_atom~nopar~nobra.expr}
513 | {new} kwnew no type~nobra args {-> New expr.new(kwnew, type~nobra.type, Null, args.exprs)}
514 | {isset_attr} kwisset recv~nopar~nobra attrid {-> New expr.isset_attr(kwisset, recv~nopar~nobra.expr, attrid)}
517 expr_atom~nopar~nobra {-> expr}
518 = {attr} recv~nopar~nobra attrid {-> New expr.attr(recv~nopar~nobra.expr, attrid)}
519 | {call} recv~nopar~nobra id args {-> New expr.call(recv~nopar~nobra.expr, id, args.exprs, [])}
520 | {super} qualified? kwsuper args {-> New expr.super(qualified, kwsuper, args.exprs)}
521 | {init} recv~nopar~nobra kwinit args {-> New expr.init(recv~nopar~nobra.expr, kwinit, args.exprs)}
522 !nobra | {bra} expr_atom~nopar braargs {-> New expr.bra(expr_atom~nopar.expr, braargs.exprs, [])}
523 | {new} kwnew no type~nobra dot [n2]:no id args {-> New expr.new(kwnew, type~nobra.type, id, args.exprs)}
524 // !nopar to unambiguise 'foo[5].bar' between '(foo[5]).bar' and 'foo([5].bar),
525 !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)}
526 !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)}
527 !nobra!nopar | {array} braargs {-> New expr.array(braargs.exprs)}
528 | {self} kwself {-> New expr.self(kwself)}
529 | {true} kwtrue {-> New expr.true(kwtrue)}
530 | {false} kwfalse {-> New expr.false(kwfalse)}
531 | {null} kwnull {-> New expr.null(kwnull)}
532 | {int} number {-> New expr.int(number)}
533 | {float} float {-> New expr.float(float)}
534 | {char} char {-> New expr.char(char)}
535 | {string} string {-> New expr.string(string)}
536 | {superstring} superstring {-> superstring.expr}
537 !nopar | {par} opar expr cpar {-> New expr.par(opar, expr, cpar)}
538 | {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)}
539 | {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)}
542 superstring {-> expr}
543 = superstring_start superstring_middle* superstring_end {-> New expr.superstring([superstring_start.expr, superstring_middle.expr, superstring_end.expr])};
544 superstring_start {-> expr*}
545 = start_string_p no expr [n2]:no {-> [start_string_p.expr, expr]};
546 start_string_p {-> expr}
547 = start_string {-> New expr.start_string(start_string)};
548 superstring_middle {-> expr*}
549 = mid_string_p no expr [n2]:no {-> [mid_string_p.expr, expr]};
550 mid_string_p {-> expr}
551 = mid_string {-> New expr.mid_string(mid_string)};
552 superstring_end {-> expr}
553 = end_string {-> New expr.end_string(end_string)};
555 /* MISC **********************************************************************/
557 recv~nopar~nobra {-> expr}
558 = expr_atom~nopar~nobra dot no {-> expr_atom~nopar~nobra.expr}
559 | {implicit} {-> New expr.implicit_self()}
563 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
564 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
565 | {empty} {-> New exprs.list([])}
567 args_nopar {-> exprs}
568 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
569 | {onearg} expr_nopar {-> New exprs.list([expr_nopar.expr])}
570 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
571 | {empty} {-> New exprs.list([])}
574 = obra no expr_list cbra {-> New exprs.bra(obra, [expr_list.expr], cbra)};
576 = expr [n2]:no expr_tail* {-> [expr, expr_tail.expr]};
578 = comma no expr [n2]:no {-> expr};
580 = opar idlist_nopar cpar {-> [idlist_nopar.id]}
581 | {nopar} idlist_nopar {-> [idlist_nopar.id]}
583 idlist_nopar {-> id*}
584 = {single} id {-> [id]}
585 | {more} idlist_nopar no comma [n2]:no id {-> [idlist_nopar.id, id]}
588 module_name {-> module_name}
589 = {mod} modquad* id {-> New module_name(Null, [modquad.id], id)}
590 | {root} quad no modquad* id {-> New module_name(quad, [modquad.id], id)}
594 = {cla} modquad* classquad {-> New qualified([modquad.id], classquad.classid)}
595 | {mod} modquad+ {-> New qualified([modquad.id], Null)}
598 = id quad no {-> id};
599 classquad {-> classid}
600 = classid quad no {-> classid};
602 n1 = {a} comment | {b} eol;
604 = {a} n2? comment+ {-> New doc([comment])}
613 = {a} n2? comment+ eol+
617 /*****************************************************************************/
619 /*****************************************************************************/
621 module = moduledecl? [imports]:import* [classdefs]:classdef*;
624 = doc? kwmodule [name]:module_name;
626 import = {std} visibility kwimport [name]:module_name
627 | {no} visibility kwimport kwend
632 | {private} kwprivate
633 | {protected} kwprotected
634 | {intrude} kwintrude
637 classdef= {std} doc? kwredef? visibility classkind [id]:classid? [formaldefs]:formaldef* [superclasses]:superclass* [propdefs]:propdef* kwend
638 | {top} [propdefs]:propdef*
639 | {main} [propdefs]:propdef*
643 | {abstract} kwabstract kwclass
644 | {interface} kwinterface
648 formaldef = [id]:classid type?;
649 superclass = kwspecial? kwsuper? type;
652 propdef = {attr} doc? [readable]:able? [writable]:able? kwredef? visibility kwvar [id]:attrid? [id2]:id? type? expr?
653 | {meth} doc? kwredef? visibility methid signature
654 | {deferred_meth} doc? kwredef? visibility kwmeth methid signature
655 | {intern_meth} doc? kwredef? visibility kwmeth methid signature
656 | {extern_meth} doc? kwredef? visibility kwmeth methid signature [extern]:string? extern_calls?
657 | {concrete_meth} doc? kwredef? visibility kwmeth methid signature [block]:expr?
658 | {concrete_init} doc? kwredef? visibility kwinit methid? signature [block]:expr?
659 | {extern_init} doc? kwredef? visibility kwnew methid? signature [extern]:string? extern_calls?
660 | {main_meth} kwredef? [block]:expr?
661 | {type} doc? kwredef? visibility kwtype [id]:classid type
664 able = {read} kwredef? kwreadable
665 | {write} kwredef? visibility? kwwritable
668 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;
670 signature = opar? [params]:param* cpar? type? [closure_decls]:closure_decl*;
672 param = id type? dotdotdot?
675 closure_decl = kwbreak? bang id signature expr?
678 type = kwnullable? [id]:classid [types]:type*;
682 expr = {block} expr* kwend?
683 | {vardecl} kwvar id type? assign? expr?
684 | {return} kwreturn? expr?
685 | {break} kwbreak label? expr?
687 | {continue} kwcontinue? label? expr?
688 | {do} kwdo [block]:expr? label?
689 | {if} kwif expr [then]:expr? [else]:expr?
690 | {ifexpr} kwif expr kwthen [then]:expr kwelse [else]:expr
691 | {while} kwwhile expr kwdo [block]:expr? label?
692 | {loop} kwloop [block]:expr? label?
693 | {for} kwfor [ids]:id* expr kwdo [block]:expr? label?
694 | {assert} kwassert id? expr [else]:expr?
697 | {binop} expr [expr2]:expr
698 | {or} expr [expr2]:expr
699 | {and} expr [expr2]:expr
700 | {or_else} expr [expr2]:expr
702 | {eq} expr [expr2]:expr
703 | {ee} expr [expr2]:expr
704 | {ne} expr [expr2]:expr
705 | {lt} expr [expr2]:expr
706 | {le} expr [expr2]:expr
707 | {ll} expr [expr2]:expr
708 | {gt} expr [expr2]:expr
709 | {ge} expr [expr2]:expr
710 | {gg} expr [expr2]:expr
712 | {plus} expr [expr2]:expr
713 | {minus} expr [expr2]:expr
714 | {starship} expr [expr2]:expr
715 | {star} expr [expr2]:expr
716 | {slash} expr [expr2]:expr
717 | {percent} expr [expr2]:expr
718 | {uminus} minus expr
719 | {new} kwnew type id? [args]:exprs
720 | {attr} expr [id]:attrid
721 | {attr_assign} expr [id]:attrid assign [value]:expr
722 | {attr_reassign} expr [id]:attrid assign_op [value]:expr
723 | {call} expr id [args]:exprs [closure_defs]:closure_def*
724 | {call_assign} expr id [args]:exprs assign [value]:expr
725 | {call_reassign} expr id [args]:exprs assign_op [value]:expr
726 | {super} qualified? kwsuper [args]:exprs
727 | {init} expr kwinit [args]:exprs
728 | {bra} expr [args]:exprs [closure_defs]:closure_def*
729 | {bra_assign} expr [args]:exprs assign [value]:expr
730 | {bra_reassign} expr [args]:exprs assign_op [value]:expr
731 | {closure_call} id [args]:exprs [closure_defs]:closure_def*
733 | {var_assign} id assign [value]:expr
734 | {var_reassign} id assign_op [value]:expr
735 | {range} expr [expr2]:expr
736 | {crange} obra expr [expr2]:expr cbra
737 | {orange} obra expr [expr2]:expr [cbra]:obra
738 | {array} [exprs]:exprs
748 | {start_string} [string]:start_string
749 | {mid_string} [string]:mid_string
750 | {end_string} [string]:end_string
751 | {superstring} [exprs]:expr*
752 | {par} opar expr cpar
753 | {as_cast} expr kwas opar type cpar
754 | {as_notnull} expr kwas opar kwnot kwnull cpar
755 | {isset_attr} kwisset expr [id]:attrid
756 | {debug_type} kwdebug kwtype expr type
759 = {list} [exprs]:expr*
760 | {par} opar [exprs]:expr* cpar
761 | {bra} obra [exprs]:expr* cbra
769 = bang [id]:closure_id [ids]:id* kwdo? expr? label?
776 module_name = quad? [path]:id* id;
777 extern_calls = kwimport [extern_calls]:extern_call*
781 | {local_prop} methid
782 | {full_prop} classid quad? methid
783 | {init_prop} classid
784 | {cast_as} [from_type]:type kwas [to_type]:type
785 | {as_nullable} type kwas kwnullable
786 | {as_not_nullable} type kwas kwnot kwnullable
789 qualified = id* classid? ;
793 /*****************************************************************************/