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 hexdigit = ['0'..'9'] | ['a'..'f'] | ['A'..'F'];
31 letter = lowercase | uppercase | digit | '_';
36 any = [all - [cr + lf]];
37 eol_helper = cr lf | cr | lf; // This takes care of different platforms
39 // characers inside strings and super-strings (atomaton powaa)
41 = [any - [['"' + '{'] + '\']]
51 sstr_body = sstr_char*;
53 long_str_char = str_char | cr | lf;
55 // because no substraction in sablecc3, complex long strings are difficult to express
58 ls12 = ls1? (ls2 ls1)* ls2?;
64 long_str_body = long_str_part*;
65 lsend1 = ls2? (ls1 ls2)* '"""' '"'*;
66 lsend2 = ls1? (ls2 ls1)* '{{{' '{'*;
68 long_sstr_char = sstr_char | cr | lf;
72 | ''' ''' long_sstr_char
75 long_sstr_body = long_sstr_part*;
83 extern_code_body = extern_code_char*;
85 /*****************************************************************************/
87 /*****************************************************************************/
91 /*****************************************************************************/
93 /*****************************************************************************/
98 comment = '#' any* eol_helper?;
100 kwpackage = 'package';
104 kwabstract = 'abstract';
105 kwinterface = 'interface';
106 kwenum = 'universal'|'enum';
117 kwprotected = 'protected';
118 kwprivate = 'private';
119 kwintrude = 'intrude';
130 kwimplies = 'implies';
132 kwcontinue = 'continue';
145 kwnullable = 'nullable';
149 kwdebug = '__debug__';
182 classid = uppercase letter*;
183 id = lowercase letter*;
184 attrid = '_' lowercase letter*;
187 hex_number = ('0x' | '0X') hexdigit+;
188 float = digit* '.' digit+;
189 string = '"' str_body '"' | '"' '"' '"' long_str_body lsend1 | ''' ''' ''' long_sstr_body ''' ''' ''';
190 start_string = '"' str_body '{' | '"' '"' '"' long_str_body lsend2;
191 mid_string = '}' str_body '{' | '}' '}' '}' long_str_body lsend2;
192 end_string = '}' str_body '"' | '}' '}' '}' long_str_body lsend1;
193 char = (''' [[any - '''] - '\'] ''') | (''' '\' any ''');
194 bad_string = ('"'|'}') str_body | '"' '"' '"' long_str_body | ''' ''' ''' long_sstr_body;
195 bad_char = ''' '\'? any;
197 extern_code_segment = '`' '{' extern_code_body '`' '}';
199 /*****************************************************************************/
201 /*****************************************************************************/
205 /*****************************************************************************/
207 /*****************************************************************************/
209 /* MODULES *******************************************************************/
211 = moduledecl? [imports]:import* [extern_bodies]:extern_code_body* [classdefs]:topdef* implicit_main_class {-> New module(moduledecl, [imports.import], [extern_bodies.extern_code_block], [classdefs.classdef,implicit_main_class.classdef])};
214 = [doc]:no redef visibility kwmodule no module_name annotation_withend [n2]:n1 {-> New moduledecl(doc.doc, redef.kwredef, visibility, kwmodule, module_name, annotation_withend.annotations)};
217 = {std} [doc]:no redef visibility kwimport no module_name annotation_withend [n2]:n1 {-> New import.std(visibility, kwimport, module_name, annotation_withend.annotations)}
218 | {no} [doc]:no redef visibility kwimport no kwend [n2]:n1 {-> New import.no(visibility, kwimport, kwend)}
222 = {classdef} classdef {-> classdef}
223 | propdef_toplevel n1 {-> New classdef.top([propdef_toplevel.propdef])}
226 implicit_main_class {-> classdef?}
227 = implicit_main_meth {-> New classdef.main([implicit_main_meth.propdef])}
228 | {null} n? {-> Null}
230 implicit_main_meth {-> propdef}
231 = [doc]:no stmts {-> New propdef.main_meth(Null, stmts.expr)}
232 | {n} [doc]:no stmtsn {-> New propdef.main_meth(Null, stmtsn.expr)}
235 /* CLASSES *******************************************************************/
237 = [doc]:no redef visibility classkind no qclassid formaldefs extern_code_block? propdefs kwend {-> New classdef.std(doc.doc, redef.kwredef, visibility, classkind, qclassid.classid, [formaldefs.formaldef], extern_code_block, [propdefs.propdef], kwend)};
239 = kwredef? {-> kwredef};
242 | {abstract} kwabstract kwclass
243 | {interface} kwinterface
245 | {extern} kwextern kwclass
248 formaldefs {-> formaldef*}
249 = obra no formaldef formaldefs_tail* [n2]:no cbra {-> [formaldef, formaldefs_tail.formaldef]}
252 formaldefs_tail {-> formaldef}
253 = comma no formaldef {-> formaldef};
255 = classid annotations? typing_o {-> New formaldef(classid, typing_o.type, annotations)};
257 superclass {-> propdef}
258 = {super} [doc]:no redef visibility kwsuper [n2]:no type annotation_withend {-> New propdef.super(doc.doc, redef.kwredef, visibility, kwsuper, type, annotation_withend.annotations)}
261 propdefs {-> propdef*}
262 = propdefn+ no {-> [propdefn.propdef]}
263 | {super} superclass {-> [superclass.propdef]}
266 propdefn {-> propdef}
267 = propdef n1 {-> propdef.propdef}
269 propdef~toplevel {-> propdef}
270 = {meth} [doc]:no redef visibility kwmeth qmethid signature annotation_noend? kwdo stmtso kwend_o {-> New propdef.meth(doc.doc, redef.kwredef, visibility, kwmeth, Null, Null, qmethid.methid, signature, annotation_noend.annotations, Null, Null, stmtso.expr)}
271 | {nobody} [doc]:no redef visibility kwmeth qmethid signature annotation_withend_nonull {-> New propdef.meth(doc.doc, redef.kwredef, visibility, kwmeth, Null, Null, qmethid.methid, signature.signature, annotation_withend_nonull.annotations, Null, Null, Null)}
272 !toplevel| {intern_new} [doc]:no redef visibility kwnew qmethid? signature annotation_withend_nonull {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, Null, kwnew, qmethid.methid, signature, annotation_withend_nonull.annotations, Null, Null, Null)}
273 !toplevel| {new} [doc]:no redef visibility kwnew qmethid? signature annotation_noend? kwdo stmtso kwend_o {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, Null, kwnew, qmethid.methid, signature, annotation_noend.annotations, Null, Null, stmtso.expr)}
274 | {extern_implicit} [doc]:no redef visibility kwmeth qmethid signature annotation_noend? extern_calls extern_code_block {-> New propdef.meth(doc.doc, redef.kwredef, visibility, kwmeth, Null, Null, qmethid.methid, signature.signature, annotation_noend.annotations, extern_calls, extern_code_block, Null)}
275 !toplevel| {var3} [doc]:no redef visibility kwvar id typing_o annotation_withend {-> New propdef.attr(doc.doc, redef.kwredef, visibility, kwvar, id, typing_o.type, Null, annotation_withend.annotations, Null)}
276 !toplevel| {var4} [doc]:no redef visibility kwvar id typing_o assign [n2]:no expr annotation_withend {-> New propdef.attr(doc.doc, redef.kwredef, visibility, kwvar, id, typing_o.type, expr.expr, annotation_withend.annotations, Null)}
277 !toplevel| {var5} [doc]:no redef visibility kwvar id typing_o annotation_noend? kwdo stmtso kwend? {-> New propdef.attr(doc.doc, redef.kwredef, visibility, kwvar, id, typing_o.type, Null, annotation_noend.annotations, stmtso.expr)}
278 !toplevel| {init} [doc]:no redef visibility kwinit qmethid? signature annotation_noend? kwdo stmtso kwend_o {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, kwinit, Null, qmethid.methid, signature, annotation_noend.annotations, Null, Null, stmtso.expr)}
279 !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)}
280 !toplevel| {extern_init_implicit} [doc]:no redef visibility kwnew qmethid? signature annotation_noend? extern_calls extern_code_block {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, Null, kwnew, qmethid.methid, signature, annotation_noend.annotations, extern_calls, extern_code_block, Null)}
281 !toplevel| {annot} line_annotation_forclass {-> line_annotation_forclass.propdef}
282 !toplevel| {super} superclass {-> superclass.propdef}
284 annotation_withend~nonull {-> annotations?}
285 = {oneliner} kwis many_annotations {-> many_annotations.annotations}
286 | {more} kwis n1 line_annotations kwend {-> line_annotations.annotations}
287 !nonull | {null} {-> Null}
289 annotation_noend {-> annotations}
290 = {oneliner} kwis many_annotations {-> many_annotations.annotations}
291 | {more} kwis n1 line_annotations {-> line_annotations.annotations}
295 = {public} {-> New visibility.public(Null)}
296 | {public2} kwpublic no {-> New visibility.public(kwpublic)}
297 | {private} kwprivate no {-> New visibility.private(kwprivate)}
298 | {protected} kwprotected no {-> New visibility.protected(kwprotected)}
299 | {intrude} kwintrude no {-> New visibility.intrude(kwintrude)}
302 methid~noid {-> methid}
303 = {plus} plus {-> New methid.plus(plus)}
304 | {minus} minus {-> New methid.minus(minus)}
305 | {star} star {-> New methid.star(star)}
306 | {starstar} starstar {-> New methid.starstar(starstar)}
307 | {slash} slash {-> New methid.slash(slash)}
308 | {percent} percent {-> New methid.percent(percent)}
309 | {eq} eq {-> New methid.eq(eq)}
310 | {ne} ne {-> New methid.ne(ne)}
311 | {le} le {-> New methid.le(le)}
312 | {ge} ge {-> New methid.ge(ge)}
313 | {lt} lt {-> New methid.lt(lt)}
314 | {gt} gt {-> New methid.gt(gt)}
315 | {ll} ll {-> New methid.ll(ll)}
316 | {gg} gg {-> New methid.gg(gg)}
317 | {bra} obra cbra {-> New methid.bra(obra, cbra)}
318 | {starship} starship {-> New methid.starship(starship)}
319 | {assign} id assign {-> New methid.assign(id, assign)}
320 | {braassign} obra cbra assign {-> New methid.braassign(obra, cbra, assign)}
321 !noid | {id} id {-> New methid.id(id)}
324 signature {-> signature}
325 = opar no params cpar typing [no2]:no {-> New signature(opar, [params.param], cpar, typing.type)}
326 | {noret} opar no params cpar [no2]:no {-> New signature(opar, [params.param], cpar, Null)}
327 | {nopar} typing no {-> New signature(Null, [], Null, typing.type)}
328 | {noparnoret} no {-> New signature(Null, [], Null, Null)}
332 = param params_tail* [n2]:no {-> [param, params_tail.param] }
335 params_tail {-> param}
336 = comma no param {-> param};
338 = {untyped} id annotations_o {-> New param(id, Null, Null, annotations_o.annotations)}
339 | id annotations? typing dotdotdot? {-> New param(id, typing.type, dotdotdot, annotations)}
342 extern_calls {-> extern_calls?}
343 = kwimport no extern_call extern_call_tail* {-> New extern_calls( kwimport, [extern_call, extern_call_tail.extern_call] )}
346 extern_call_tail {-> extern_call}
347 = comma no extern_call {-> extern_call};
348 extern_call {-> extern_call}
349 = {prop} extern_call_prop {-> extern_call_prop.extern_call}
350 | {cast} extern_call_cast {-> extern_call_cast.extern_call}
351 | {super} kwsuper {-> New extern_call.super( kwsuper )}
353 extern_call_prop {-> extern_call}
354 = {local} qmethid {-> New extern_call.local_prop( qmethid.methid )}
355 | {full} type dot qmethid {-> New extern_call.full_prop( type, dot, qmethid.methid )}
356 | {init} type {-> New extern_call.init_prop( type )}
358 extern_call_cast {-> extern_call}
359 = {as_cast} [from_type]:type dot kwas [n2]:no opar [n3]:no [to_type]:type [n4]:no cpar {-> New extern_call.cast_as(from_type, dot, kwas, to_type)}
360 | {as_cast2}[from_type]:type dot kwas [n2]:no [to_type]:type {-> New extern_call.cast_as(from_type, dot, kwas, to_type)}
361 | {as_nullable} type dot kwas [n2]:no opar [n3]:no kwnullable [n4]:no cpar {-> New extern_call.as_nullable( type, kwas, kwnullable)}
362 | {as_nullable2}type dot kwas [n2]:no kwnullable {-> New extern_call.as_nullable( type, kwas, kwnullable)}
363 | {as_not_nullable} type dot kwas [n2]:no opar [n3]:no kwnot [n4]:no kwnullable [n5]:no cpar {-> New extern_call.as_not_nullable( type, kwas, kwnot, kwnullable)}
364 | {as_not_nullable2}type dot kwas [n2]:no kwnot [n3]:no kwnullable {-> New extern_call.as_not_nullable( type, kwas, kwnot, kwnullable)}
367 string_o {->string?} = string? {-> string};
369 in_language = kwin no string [n1]:no {-> New in_language(kwin, string)};
370 extern_code_block = in_language? extern_code_segment;
371 extern_code_block_o {-> extern_code_block?}
372 = extern_code_block {-> extern_code_block}
375 extern_code_body {-> extern_code_block} = no extern_code_block {-> extern_code_block};
377 /* TYPES *********************************************************************/
378 type~nobra~nopar {-> type}
379 = {simple} kwnullable? classid annotations_o~nopar {-> New type(kwnullable, classid, [], annotations_o~nopar.annotations)}
380 !nobra | {generic} kwnullable? classid obra no types [n2]:no cbra annotations_o~nopar {-> New type(kwnullable, classid, [types.type], annotations_o~nopar.annotations)}
383 = type types_tail* {-> [type, types_tail.type]};
385 = comma no type {-> type};
387 = column no type {-> type};
389 = column no type {-> type}
393 /* STATMENTS *****************************************************************/
394 stmtso~withelse~withend {-> expr?}
395 = {block} n stmtsnend {-> stmtsnend.expr}
396 | {emptyblock} n kwend {-> New expr.block([], kwend)}
397 | {emptyoneline} kwend {-> New expr.block([], kwend)}
398 !withend| {oneline} stmt~withelse {-> stmt~withelse.expr}
401 = stmt stmts_tail* {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
403 = stmt stmts_tail* n {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
405 = stmt stmts_tail* n kwend {-> New expr.block([stmt.expr, stmts_tail.expr], kwend)};
407 = n stmt {-> stmt.expr};
408 stmt~withelse~noexpr~nopar {-> expr}
409 = {vardecl} vardecl {-> vardecl.expr}
410 | {assign} assignment~nopar {-> assignment~nopar.expr}
411 | {return} kwreturn expr? {-> New expr.return(kwreturn, expr)}
412 | {break} kwbreak label? {-> New expr.break(kwbreak, label)}
413 | {abort} kwabort {-> New expr.abort(kwabort)}
414 | {continue} kwcontinue label? {-> New expr.continue(kwcontinue, label)}
415 | {do} do~withelse {-> do~withelse.expr}
416 !noexpr | {if} if~withelse {-> if~withelse.expr}
417 | {while} while~withelse {-> while~withelse.expr}
418 | {loop} loop~withelse {-> loop~withelse.expr}
419 | {for} for~withelse {-> for~withelse.expr}
420 | {with} with~withelse {-> with~withelse.expr}
421 | {assert} assert~withelse {-> assert~withelse.expr}
422 !noexpr | {call} recv qid args_nopar {-> New expr.call(recv.expr, qid.id, args_nopar.exprs)}
423 !noexpr | {super} qualified_o kwsuper args_nopar {-> New expr.super(qualified_o.qualified, kwsuper, args_nopar.exprs)}
424 !noexpr | {init} recv qualified? kwinit args_nopar {-> New expr.init(recv.expr, kwinit, args_nopar.exprs)}
425 | {debug_type_is} kwdebug kwtype type column expr {-> New expr.debug_type(kwdebug, kwtype, expr.expr, type) }
431 = kwvar id annotations? typing_o {-> New expr.vardecl(kwvar, id, typing_o.type, Null, Null, annotations)}
432 | {assign} kwvar id annotations? typing_o assign no expr {-> New expr.vardecl(kwvar, id, typing_o.type, assign, expr.expr, annotations)}
435 assignment~nopar {-> expr}
436 = {attr} recv~nopar qualified_o attrid assign expr {-> New expr.attr_assign(recv~nopar.expr, attrid, assign, expr)}
437 | {call} recv~nopar qid args assign expr {-> New expr.call_assign(recv~nopar.expr, qid.id, args.exprs, assign, expr)}
438 | {bra} expr_atom~nopar braargs assign expr {-> New expr.bra_assign(expr_atom~nopar.expr, braargs.exprs, assign, expr)}
439 | {attr_re} recv~nopar qualified_o attrid assign_op expr {-> New expr.attr_reassign(recv~nopar.expr, attrid, assign_op, expr)}
440 | {call_re} recv~nopar qid args assign_op expr {-> New expr.call_reassign(recv~nopar.expr, qid.id, args.exprs, assign_op, expr)}
441 | {bra_re} expr_atom~nopar braargs assign_op expr {-> New expr.bra_reassign(expr_atom~nopar.expr, braargs.exprs, assign_op, expr)}
448 do~withelse {-> expr}
449 = kwdo stmtso_withend label {-> New expr.do(kwdo, stmtso_withend.expr, label)}
450 | {nolabel} kwdo stmtso~withelse {-> New expr.do(kwdo, stmtso~withelse.expr, Null)}
453 if~withelse {-> expr}
454 = {onelineelse} kwif no expr [n2]:no kwthen stmt_withelse kwelse stmtso~withelse {-> New expr.if(kwif, expr, stmt_withelse.expr, stmtso~withelse.expr)}
455 !withelse | {oneline} kwif no expr [n2]:no kwthen stmt {-> New expr.if(kwif, expr, stmt.expr, Null)}
456 !withelse | {block} kwif no expr [n2]:no kwthen [n3]:n stmtsn elsepartblock {-> New expr.if(kwif, expr, stmtsn.expr, elsepartblock.expr)}
457 !withelse | {emptyblock} kwif no expr [n2]:no kwthen [n3]:n? elsepartblock {-> New expr.if(kwif, expr, Null, elsepartblock.expr)}
459 elsepartblock {-> expr?}
460 = {else} kwelse stmtso {-> stmtso.expr}
461 | {empty} kwend {-> New expr.block([], kwend)}
464 loop~withelse {-> expr}
465 = kwloop stmtso_withend label {-> New expr.loop(kwloop, stmtso_withend.expr, label)}
466 | {nolabel} kwloop stmtso~withelse {-> New expr.loop(kwloop, stmtso~withelse.expr, Null)}
469 while~withelse {-> expr}
470 = kwwhile no expr [n2]:no kwdo stmtso_withend label {-> New expr.while(kwwhile, expr, kwdo, stmtso_withend.expr, label)}
471 | {nolabel} kwwhile no expr [n2]:no kwdo stmtso~withelse {-> New expr.while(kwwhile, expr, kwdo, stmtso~withelse.expr, Null)}
474 for~withelse {-> expr}
475 = 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)}
476 | {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)}
479 with~withelse {-> expr}
480 = kwwith no withexpr [n4]:no kwdo stmtso_withend label {-> New expr.with(kwwith, withexpr.expr, kwdo, stmtso_withend.expr, label)}
481 | {nolabel} kwwith no withexpr [n4]:no kwdo stmtso~withelse {-> New expr.with(kwwith, withexpr.expr, kwdo, stmtso~withelse.expr, Null)}
485 = {assign} id annotations? typing_o assign no expr {-> New expr.vardecl(Null, id, typing_o.type, assign, expr.expr, annotations)}
489 assert~withelse {-> expr}
490 = {else} kwassert assertid? expr kwelse stmtso~withelse {-> New expr.assert(kwassert, assertid.id, expr, stmtso~withelse.expr)}
491 !withelse| {noelse} kwassert assertid? expr {-> New expr.assert(kwassert, assertid.id, expr, Null)}
496 /* EXPRESSIONS ***************************************************************/
497 expr~nopar~nobra {-> expr}
498 = expr_and~nopar~nobra {-> expr_and~nopar~nobra.expr}
499 | {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)}
502 expr_and~nopar~nobra {-> expr}
503 = expr_not~nopar~nobra {-> expr_not~nopar~nobra.expr}
504 | {:or} expr_and~nopar~nobra kwor :no expr_not~nopar~nobra
505 | {:and} expr_and~nopar~nobra kwand :no expr_not~nopar~nobra
506 | {:or_else} expr_and~nopar~nobra kwor kwelse :no expr_not~nopar~nobra
507 | {:implies} expr_and~nopar~nobra kwimplies :no expr_not~nopar~nobra
510 expr_not~nopar~nobra {-> expr}
511 = expr_eq~nopar~nobra {-> expr_eq~nopar~nobra.expr}
512 | {not} kwnot no expr_not~nopar~nobra {-> New expr.not(kwnot, expr_not~nopar~nobra.expr)}
515 expr_eq~nopar~nobra {-> expr}
516 = expr_add~nopar~nobra {-> expr_add~nopar~nobra.expr}
517 | {:eq} expr_add~nopar~nobra eq :no [expr2]:expr_add~nopar~nobra
518 | {:ne} expr_add~nopar~nobra ne :no [expr2]:expr_add~nopar~nobra
519 | {:lt} expr_add~nopar~nobra lt :no [expr2]:expr_add~nopar~nobra
520 | {:le} expr_add~nopar~nobra le :no [expr2]:expr_add~nopar~nobra
521 | {:ll} expr_eq~nopar~nobra ll :no [expr2]:expr_add~nopar~nobra
522 | {:gt} expr_add~nopar~nobra gt :no [expr2]:expr_add~nopar~nobra
523 | {:ge} expr_add~nopar~nobra ge :no [expr2]:expr_add~nopar~nobra
524 | {:gg} expr_eq~nopar~nobra gg :no [expr2]:expr_add~nopar~nobra
525 | {:starship} expr_add~nopar~nobra starship :no [expr2]:expr_add~nopar~nobra
526 | {:isa} expr_add~nopar~nobra kwisa :no type~nobra
529 expr_add~nopar~nobra {-> expr}
530 = expr_mul~nopar~nobra {-> expr_mul~nopar~nobra.expr}
531 | {:plus} expr_add~nopar~nobra plus :no [expr2]:expr_mul~nopar~nobra
532 | {:minus} expr_add~nopar~nobra minus :no [expr2]:expr_mul~nopar~nobra
535 expr_mul~nopar~nobra {-> expr}
536 = expr_pow~nopar~nobra {-> expr_pow~nopar~nobra.expr}
537 | {:star} expr_mul~nopar~nobra star :no [expr2]:expr_pow~nopar~nobra
538 | {:slash} expr_mul~nopar~nobra slash :no [expr2]:expr_pow~nopar~nobra
539 | {:percent} expr_mul~nopar~nobra percent :no [expr2]:expr_pow~nopar~nobra
542 expr_pow~nopar~nobra {-> expr}
543 = expr_minus~nopar~nobra {-> expr_minus~nopar~nobra.expr}
544 | {:starstar} expr_minus~nopar~nobra starstar :no [expr2]:expr_pow~nopar~nobra
547 expr_minus~nopar~nobra {-> expr}
548 = expr_new~nopar~nobra {-> expr_new~nopar~nobra.expr}
549 | {:uminus} minus expr_minus~nobra
550 | {:uplus} plus expr_minus~nobra
551 | {:once} kwonce :no expr_minus~nobra
554 expr_new~nopar~nobra {-> expr}
555 = expr_atom~nopar~nobra {-> expr_atom~nopar~nobra.expr}
556 | {new} kwnew no type~nobra_nopar args {-> New expr.new(kwnew, type~nobra_nopar.type, Null, args.exprs)}
557 | {isset_attr} kwisset recv~nopar~nobra qualified_o attrid {-> New expr.isset_attr(kwisset, recv~nopar~nobra.expr, attrid)}
560 expr_atom~nopar~nobra {-> expr}
561 = expr_single~nopar~nobra {-> expr_single~nopar~nobra.expr}
562 | {attr} recv~nopar~nobra qualified_o attrid {-> New expr.attr(recv~nopar~nobra.expr, attrid)}
563 | {call} recv~nopar~nobra qid args {-> New expr.call(recv~nopar~nobra.expr, qid.id, args.exprs)}
564 | {super} qualified_o kwsuper args {-> New expr.super(qualified_o.qualified, kwsuper, args.exprs)}
565 | {init} recv~nopar~nobra kwinit args {-> New expr.init(recv~nopar~nobra.expr, kwinit, args.exprs)}
566 !nobra | {bra} expr_atom~nopar braargs {-> New expr.bra(expr_atom~nopar.expr, braargs.exprs)}
567 | {new} kwnew no type~nobra_nopar dot [n2]:no qid args {-> New expr.new(kwnew, type~nobra_nopar.type, qid.id, args.exprs)}
568 | {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)}
569 | {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)}
570 | {as_notnull2}expr_atom~nopar~nobra dot no kwas [n2]:no kwnot [n4]:no kwnull {-> New expr.as_notnull(expr_atom~nopar~nobra.expr, kwas, Null, kwnot, kwnull, Null)}
571 | {vararg} [expr]:expr_atom~nopar~nobra dotdotdot {-> New expr.vararg(expr.expr, dotdotdot)}
574 expr_single~nopar~nobra {-> expr}
575 = {self} kwself annotations_o {-> New expr.self(kwself, annotations_o.annotations)}
576 | {true} kwtrue annotations_o {-> New expr.true(kwtrue, annotations_o.annotations)}
577 | {false} kwfalse annotations_o {-> New expr.false(kwfalse, annotations_o.annotations)}
578 | {null} kwnull annotations_o {-> New expr.null(kwnull, annotations_o.annotations)}
579 | {int} number annotations_o {-> New expr.dec_int(number, annotations_o.annotations)}
580 | {hex_int} hex_number annotations_o {-> New expr.hex_int(hex_number, annotations_o.annotations)}
581 | {float} float annotations_o {-> New expr.float(float, annotations_o.annotations)}
582 | {char} char annotations_o {-> New expr.char(char, annotations_o.annotations)}
583 | {string} string annotations_o {-> New expr.string(string, annotations_o.annotations)}
584 | {superstring} superstring {-> superstring.expr}
585 !nopar | {par} expr_par {-> expr_par.expr}
586 // !nopar to unambiguise 'foo[5].bar' between '(foo[5]).bar' and 'foo([5].bar),
587 !nobra!nopar | {range} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no cbra annotations_o {-> New expr.crange(obra, expr, expr2.expr, cbra, annotations_o.annotations)}
588 !nobra!nopar | {orange} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no [cbra]:obra annotations_o {-> New expr.orange(obra, expr, expr2.expr, cbra, annotations_o.annotations)}
589 !nobra!nopar | {array} obra no array_items typing_o cbra annotations_o {-> New expr.array(obra, [array_items.expr], typing_o.type, cbra, annotations_o.annotations)}
593 = {par} opar no any_expr [n2]:no cpar annotations_o {-> New expr.par(opar, any_expr.expr, cpar, annotations_o.annotations)}
594 | {tuple} opar no many_expr [n2]:no cpar annotations_o {-> New expr.par(opar, many_expr.expr, cpar, annotations_o.annotations)}
598 = any_expr many_expr_tail+ {-> New expr.many([any_expr.expr, many_expr_tail.expr])}
601 many_expr_tail {->expr}
602 = comma no any_expr {-> any_expr.expr}
605 array_items {-> expr*}
606 = array_item array_items_tail* {-> [array_item.expr, array_items_tail.expr]}
608 array_items_tail {-> expr}
609 = comma no array_item {-> array_item.expr}
613 | {for} kwfor no [ids]:idlist [n2]:no kwin [n3]:no expr [n4]:no kwdo [block]:array_item {-> New expr.for(kwfor, [ids.id], expr, kwdo, block.expr, Null)}
614 | {if} kwif [n1]:no expr [n2]:no kwthen [n3]:no [then]:array_item {-> New expr.if(kwif, expr, then.expr, Null)}
617 superstring {-> expr}
618 = superstring_start superstring_middle* superstring_end annotations_o {-> New expr.superstring([superstring_start.expr, superstring_middle.expr, superstring_end.expr], annotations_o.annotations)};
619 superstring_start {-> expr*}
620 = start_string_p no expr [n2]:no {-> [start_string_p.expr, expr]}
621 | {noexpr} start_string_p no {-> [start_string_p.expr]}
623 start_string_p {-> expr}
624 = start_string {-> New expr.start_string(start_string)};
625 superstring_middle {-> expr*}
626 = mid_string_p no expr [n2]:no {-> [mid_string_p.expr, expr]}
627 | {noexpr} mid_string_p no {-> [mid_string_p.expr]}
629 mid_string_p {-> expr}
630 = mid_string {-> New expr.mid_string(mid_string)};
631 superstring_end {-> expr}
632 = end_string {-> New expr.end_string(end_string)};
634 /* ANNOTATIONS *******************************************************************/
636 annotations~nopar {-> annotations}
637 = {one} at one_annotation~nopar {-> New annotations(at, Null, [one_annotation~nopar.annotation], Null)}
638 | {many} at opar no annotation_list [n2]:no cpar {-> New annotations(at, opar, [annotation_list.annotation], cpar)}
640 annotations_o~nopar {-> annotations?}
641 = annotations~nopar {-> annotations~nopar.annotations}
645 one_annotation~nopar {-> annotation}
646 = {alone} redef visibility atid annotations_o~nopar {-> New annotation(Null, redef.kwredef, visibility, atid, Null, [], Null, annotations_o~nopar.annotations)}
647 // !nopar to unambiguise 'new T@foo(bar)' between 'new T@(foo(bar))' and 'new (T@foo)(bar)'
648 !nopar | {args} redef visibility atid opar no at_args [n2]:no cpar annotations_o~nopar {-> New annotation(Null, redef.kwredef, visibility, atid, opar, [at_args.expr], cpar, annotations_o~nopar.annotations)}
651 many_annotations {-> annotations}
652 = {many} annotation_list {-> New annotations(Null, Null, [annotation_list.annotation], Null)}
655 annotation_list {-> annotation*}
656 = {many} one_annotation_list annotations_tail* {-> [one_annotation_list.annotation, annotations_tail.annotation] }
659 one_annotation_list~nopar {-> annotation}
660 = {alone} redef visibility atid annotations_o~nopar {-> New annotation(Null, redef.kwredef, visibility, atid, Null, [], Null, annotations_o~nopar.annotations)}
661 // !nopar to unambiguise 'new T@foo(bar)' between 'new T@(foo(bar))' and 'new (T@foo)(bar)'
662 !nopar | {args} redef visibility atid opar no at_args [n2]:no cpar annotations_o~nopar {-> New annotation(Null, redef.kwredef, visibility, atid, opar, [at_args.expr], cpar, annotations_o~nopar.annotations)}
663 !nopar | {nopar} redef visibility atid at_arg_single {-> New annotation(Null, redef.kwredef, visibility, atid, Null, [at_arg_single.expr], Null, Null)}
665 at_arg_single {-> expr}
666 // FIXME: why expr_single but not expr_atom is not clear :(
667 = {expr} [expr]:expr_single_nopar {-> expr.expr}
670 annotations_tail {-> annotation}
671 = comma no one_annotation_list {-> one_annotation_list.annotation}
674 line_annotations {-> annotations}
675 = line_annotation+ {-> New annotations(Null, Null, [line_annotation.annotation], Null) }
677 line_annotation {-> annotation}
678 = [doc]:no redef visibility atid annotations? n1 {-> New annotation(doc.doc, redef.kwredef, visibility, atid.atid, Null, [], Null, annotations)}
679 | {args} [doc]:no redef visibility atid opar no at_args cpar annotations? n1 {-> New annotation(doc.doc, redef.kwredef, visibility, atid.atid, opar, [at_args.expr], cpar, annotations)}
680 | {nopar} [doc]:no redef visibility atid at_args_nopar n1 {-> New annotation(doc.doc, redef.kwredef, visibility, atid.atid, Null, [at_args_nopar.expr], Null, Null)}
682 line_annotation_forclass {-> propdef}
683 = [doc]:no atid_forclass annotations? {-> New propdef.annot(doc.doc, Null, Null, atid_forclass.atid, Null, [], Null, annotations)}
684 | {args} [doc]:no atid_forclass opar no at_args cpar annotations? {-> New propdef.annot(doc.doc, Null, Null, atid_forclass.atid, opar, [at_args.expr], cpar, annotations)}
685 | {nopar} [doc]:no atid_forclass at_args_nopar {-> New propdef.annot(doc.doc, Null, Null, atid_forclass.atid, Null, [at_args_nopar.expr], Null, Null)}
688 at_args~nopar {-> expr* }
689 = {many} any_expr~nopar at_args_tail* {-> [any_expr~nopar.expr, at_args_tail.expr]}
692 at_args_tail {-> expr}
693 = comma no any_expr {-> any_expr.expr}
696 any_expr~nopar {-> expr}
697 = {type} type {-> New expr.type(type)}
698 | {expr} expr~nopar {-> expr~nopar.expr}
699 | {stmt} stmt_noexpr~nopar {-> stmt_noexpr~nopar.expr}
700 | {methid} recv~nopar qmethid_noid {-> New expr.methid(recv~nopar.expr, qmethid_noid.methid)}
701 !nopar | {at} annotations {-> New expr.at(annotations.annotations)}
704 atid~forclass {-> atid}
705 = {id} id {-> New atid.id(id)}
706 !forclass | {kwextern} kwextern {-> New atid.kwextern(kwextern)}
707 // | {kwimport} kwimport {-> New atid.kwimport(kwimport)}
708 | {kwabstract} kwabstract {-> New atid.kwabstract(kwabstract)}
711 /* MISC **********************************************************************/
713 recv~nopar~nobra {-> expr}
714 = expr_atom~nopar~nobra dot no {-> expr_atom~nopar~nobra.expr}
715 | {implicit} {-> New expr.implicit_self()}
719 = args_n {-> args_n.exprs}
720 | {empty} {-> New exprs.list([])}
723 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
724 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
726 args_nopar {-> exprs}
727 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
728 | {onearg} expr_nopar {-> New exprs.list([expr_nopar.expr])}
729 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
730 | {empty} {-> New exprs.list([])}
733 = obra no expr_list cbra {-> New exprs.bra(obra, [expr_list.expr], cbra)};
735 = expr_list {-> New exprs.list([expr_list.expr])};
737 = expr [n2]:no expr_tail* {-> [expr, expr_tail.expr]};
739 = comma no expr [n2]:no {-> expr};
741 = opar no idlist_nopar [n2]:no cpar {-> [idlist_nopar.id]}
742 | {nopar} idlist_nopar {-> [idlist_nopar.id]}
744 idlist_nopar {-> id*}
745 = {single} id {-> [id]}
746 | {more} idlist_nopar comma [n2]:no id {-> [idlist_nopar.id, id]}
749 module_name {-> module_name}
750 = {mod} modquad* id {-> New module_name(Null, [modquad.id], id)}
751 | {root} quad no modquad* id {-> New module_name(quad, [modquad.id], id)}
755 = {cla} modquad* classquad {-> New qualified([modquad.id], classquad.classid)}
756 | {mod} modquad+ {-> New qualified([modquad.id], Null)}
758 qualified_o {-> qualified?}
759 = qualified {-> qualified}
763 = qualified? id {-> id}
765 qclassid {-> classid}
766 = qualified? classid {-> classid}
768 qmethid~noid {-> methid}
769 = qualified? methid~noid {-> methid~noid.methid}
772 = id quad no {-> id};
773 classquad {-> classid}
774 = classid quad no {-> classid};
780 n1 = {a} comment | {b} eol;
782 = {a} n2? comment+ {-> New doc([comment])}
791 = {a} n2? comment+ eol+
795 /*****************************************************************************/
797 /*****************************************************************************/
799 module = moduledecl? [imports]:import* [extern_code_blocks]:extern_code_block* [classdefs]:classdef*;
802 = doc? kwredef? visibility kwmodule [name]:module_name annotations?;
804 import = {std} visibility kwimport [name]:module_name annotations?
805 | {no} visibility kwimport kwend
810 | {private} kwprivate
811 | {protected} kwprotected
812 | {intrude} kwintrude
815 classdef= {std} doc? kwredef? visibility classkind [id]:classid? [formaldefs]:formaldef* extern_code_block? [propdefs]:propdef* kwend
816 | {top} [propdefs]:propdef*
817 | {main} [propdefs]:propdef*
821 | {abstract} kwabstract kwclass
822 | {interface} kwinterface
824 | {extern} kwextern kwclass?
826 formaldef = [id]:classid type? annotations?;
829 propdef = {attr} doc? kwredef? visibility kwvar [id2]:id type? expr? annotations? [block]:expr?
830 | {main_meth} kwredef? [block]:expr?
831 | {type} doc? kwredef? visibility kwtype [id]:classid type annotations?
832 | {meth} doc? kwredef? visibility kwmeth? kwinit? kwnew? methid? signature annotations? extern_calls? extern_code_block? [block]:expr?
833 | {super} doc? kwredef? visibility kwsuper type annotations?
834 | {annot} doc? kwredef? visibility? atid opar? [args]:expr* cpar? annotations?
837 methid = {id} id | {plus} plus | {minus} minus | {star} star | {starstar} starstar | {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;
839 signature = opar? [params]:param* cpar? type?;
841 param = id type? dotdotdot? annotations?
844 type = kwnullable? [id]:classid [types]:type* annotations?;
848 expr = {block} expr* kwend?
849 | {vardecl} kwvar? id type? assign? expr? annotations?
850 | {return} kwreturn? expr?
851 | {break} kwbreak label?
853 | {continue} kwcontinue? label?
854 | {do} kwdo [block]:expr? label?
855 | {if} kwif expr [then]:expr? [else]:expr?
856 | {ifexpr} kwif expr kwthen [then]:expr kwelse [else]:expr
857 | {while} kwwhile expr kwdo [block]:expr? label?
858 | {loop} kwloop [block]:expr? label?
859 | {for} kwfor [ids]:id* expr kwdo [block]:expr? label?
860 | {with} kwwith expr kwdo [block]:expr? label?
861 | {assert} kwassert id? expr [else]:expr?
864 | {binop} expr [expr2]:expr
865 | {or} expr [op]:kwor [expr2]:expr
866 | {and} expr [op]:kwand [expr2]:expr
867 | {or_else} expr [op]:kwor kwelse [expr2]:expr
868 | {implies} expr [op]:kwimplies [expr2]:expr
870 | {eq} expr [op]:eq [expr2]:expr
871 | {ne} expr [op]:ne [expr2]:expr
872 | {lt} expr [op]:lt [expr2]:expr
873 | {le} expr [op]:le [expr2]:expr
874 | {ll} expr [op]:ll [expr2]:expr
875 | {gt} expr [op]:gt [expr2]:expr
876 | {ge} expr [op]:ge [expr2]:expr
877 | {gg} expr [op]:gg [expr2]:expr
878 | {isa} expr kwisa type
879 | {plus} expr [op]:plus [expr2]:expr
880 | {minus} expr [op]:minus [expr2]:expr
881 | {starship} expr [op]:starship [expr2]:expr
882 | {star} expr [op]:star [expr2]:expr
883 | {starstar} expr [op]:starstar [expr2]:expr
884 | {slash} expr [op]:slash [expr2]:expr
885 | {percent} expr [op]:percent [expr2]:expr
886 | {uminus} minus expr
888 | {new} kwnew type id? [args]:exprs
889 | {attr} expr [id]:attrid
890 | {attr_assign} expr [id]:attrid assign [value]:expr
891 | {attr_reassign} expr [id]:attrid assign_op [value]:expr
892 | {call} expr id [args]:exprs
893 | {call_assign} expr id [args]:exprs assign [value]:expr
894 | {call_reassign} expr id [args]:exprs assign_op [value]:expr
895 | {super} qualified? kwsuper [args]:exprs
896 | {init} expr kwinit [args]:exprs
897 | {bra} expr [args]:exprs
898 | {bra_assign} expr [args]:exprs assign [value]:expr
899 | {bra_reassign} expr [args]:exprs assign_op [value]:expr
901 | {var_assign} id assign [value]:expr
902 | {var_reassign} id assign_op [value]:expr
903 | {range} expr [expr2]:expr annotations?
904 | {crange} obra expr [expr2]:expr cbra annotations?
905 | {orange} obra expr [expr2]:expr [cbra]:obra annotations?
906 | {array} obra [exprs]:expr* type? cbra annotations?
907 | {self} kwself annotations?
909 | {true} kwtrue annotations?
910 | {false} kwfalse annotations?
911 | {null} kwnull annotations?
912 | {dec_int} number annotations?
913 | {hex_int} hex_number annotations?
914 | {float} float annotations?
915 | {char} char annotations?
916 | {string} string annotations?
917 | {start_string} [string]:start_string
918 | {mid_string} [string]:mid_string
919 | {end_string} [string]:end_string
920 | {superstring} [exprs]:expr* annotations?
921 | {par} opar expr cpar annotations?
922 | {as_cast} expr kwas opar? type cpar?
923 | {as_notnull} expr kwas opar? kwnot kwnull cpar?
924 | {isset_attr} kwisset expr [id]:attrid
925 | {debug_type} kwdebug kwtype expr type
926 | {vararg} expr dotdotdot
928 | {methid} expr [id]:methid
930 | {many} [exprs]:expr*
933 = {list} [exprs]:expr*
934 | {par} opar [exprs]:expr* cpar
935 | {bra} obra [exprs]:expr* cbra
942 module_name = quad? [path]:id* id;
943 extern_calls = kwimport [extern_calls]:extern_call*
947 | {local_prop} methid
948 | {full_prop} type dot? methid
950 | {cast_as} [from_type]:type dot? kwas [to_type]:type
951 | {as_nullable} type kwas kwnullable
952 | {as_not_nullable} type kwas kwnot kwnullable
954 in_language = kwin string;
955 extern_code_block = in_language? extern_code_segment;
957 qualified = id* classid? ;
961 annotations = at? opar? [items]:annotation* cpar?;
963 annotation = doc? kwredef? visibility? atid opar? [args]:expr* cpar? annotations?;
965 atid = {id} id | {kwextern} [id]:kwextern | {kwabstract} [id]:kwabstract | {kwimport} [id]:kwimport;
967 /*****************************************************************************/