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 kwpackage = 'package';
63 kwabstract = 'abstract';
64 kwinterface = 'interface';
65 kwuniversal = 'universal';
66 kwspecial = 'special';
75 kwreadable = 'readable';
76 kwwritable = 'writable';
80 kwprotected = 'protected';
81 kwprivate = 'private';
82 kwintrude = 'intrude';
93 kwcontinue = 'continue';
134 classid = uppercase letter*;
135 id = lowercase letter*;
136 attrid = '_' lowercase letter*;
139 float = digit* '.' digit+;
140 char = ''' [any - ''']* ''';
141 string = '"' str_body '"';
142 start_string = '"' str_body '{';
143 mid_string = '}' str_body '{';
144 end_string = '}' str_body '"';
147 /*****************************************************************************/
149 /*****************************************************************************/
153 /*****************************************************************************/
155 /*****************************************************************************/
157 /* MODULES *******************************************************************/
159 = packagedecl? [imports]:import* [classdefs]:classdef* implicit_top_class? implicit_main_class? {-> New module(packagedecl, [imports.import],[classdefs.classdef,implicit_top_class.classdef,implicit_main_class.classdef])};
162 = [doc]:no kwpackage no id [n2]:n1 {-> New packagedecl(doc.doc, kwpackage, id)};
165 = [doc]:no visibility kwimport no id [n2]:n1 {-> New import(visibility, kwimport, id)}
166 | {no} [doc]:no visibility kwimport no kwend [n2]:n1 {-> New import.no(visibility, kwimport, kwend)}
169 implicit_top_class {-> classdef}
170 = propdefs_toplevel {-> New classdef.top([propdefs_toplevel.propdef])};
172 implicit_main_class {-> classdef?}
173 = implicit_main_meth {-> New classdef.main([implicit_main_meth.propdef])}
176 implicit_main_meth {-> propdef}
177 = [doc]:no stmts no {-> New propdef.main_meth(Null, stmts.expr)};
179 /* CLASSES *******************************************************************/
181 = [doc]:no redef visibility classkind no classid formaldefs? [specials]:special* propdefs? [n2]:no kwend {-> New classdef(doc.doc, redef.kwredef, visibility, classkind, classid, [formaldefs.formaldef], [specials.superclass], [propdefs.propdef])};
183 = kwredef? {-> kwredef};
186 | {abstract} kwabstract kwclass
187 | {interface} kwinterface
188 | {universal} kwuniversal
191 formaldefs {-> formaldef*}
192 = obra no formaldef formaldefs_tail* [n2]:no cbra {-> [formaldef, formaldefs_tail.formaldef]};
193 formaldefs_tail {-> formaldef}
194 = comma no formaldef {-> formaldef};
196 = classid typing? {-> New formaldef(classid, typing.type)};
198 special {-> superclass}
199 = no kwspecial [n2]:no type {-> New superclass(kwspecial, type)};
201 propdefs~toplevel {-> propdef*}
202 = propdef~toplevel n1 propdefs_tail~toplevel* {-> [propdef~toplevel.propdef, propdefs_tail~toplevel.propdef]}
204 propdefs_tail~toplevel {-> propdef}
205 = propdef~toplevel n1 {-> propdef~toplevel.propdef}
207 propdef~toplevel {-> propdef}
208 = {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)}
209 !toplevel| {deferred} [doc]:no redef visibility kwmeth methid signature kwis kwabstract {-> New propdef.deferred_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)}
210 !toplevel| {intern} [doc]:no redef visibility kwmeth methid signature kwis kwintern {-> New propdef.intern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)}
211 | {extern} [doc]:no redef visibility kwmeth methid signature kwis kwextern string? {-> New propdef.extern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature, string)}
212 !toplevel| {attr} [doc]:no readable writable redef visibility kwattr attrid typing? {-> New propdef.attr(doc.doc, readable.able, writable.able, redef.kwredef, visibility, kwattr, attrid, typing.type, Null)}
213 !toplevel| {attr2} [doc]:no readable writable redef visibility kwattr attrid typing? assign [n2]:no expr {-> New propdef.attr(doc.doc, readable.able, writable.able, redef.kwredef, visibility, kwattr, attrid, typing.type, expr)}
214 !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)}
215 !toplevel| {type} [doc]:no redef visibility kwtype classid typing {-> New propdef.type(doc.doc, redef.kwredef, visibility, kwtype, classid, typing.type)}
218 = redef kwreadable {-> New able.read(redef.kwredef, kwreadable)}
222 = redef kwwritable {-> New able.write(redef.kwredef, kwwritable)}
227 = {public} {-> New visibility.public()}
228 | {private} kwprivate no {-> New visibility.private(kwprivate)}
229 | {protected} kwprotected no {-> New visibility.protected(kwprotected)}
230 | {intrude} kwintrude no {-> New visibility.intrude(kwintrude)}
247 | {starship} starship
249 | {braassign} obra cbra assign
253 = params? typing? closure_decls {-> New signature([params.param], typing.type, [closure_decls.closure_decl])}
254 | {noclosures} params? typing? no {-> New signature([params.param], typing.type, [])}
257 signature_noclosures {-> signature}
258 = params? typing? {-> New signature([params.param], typing.type, [])};
261 = opar no param params_tail* [n2]:no cpar {-> [param, params_tail.param]}
262 | {empty} opar no cpar {-> []}
264 params_tail {-> param}
265 = comma no param {-> param};
267 = {untyped} id {-> New param(id, Null, Null)}
268 | id typing dotdotdot? {-> New param(id, typing.type, dotdotdot)}
271 closure_decls {->closure_decl*}
272 = no closure_decl+ {-> [closure_decl]};
274 = kwwith kwbreak? [no2]:no id signature_noclosures n {-> New closure_decl(kwwith, kwbreak, id, signature_noclosures.signature, Null)}
275 | {optionnal} kwwith kwbreak? [no2]:no id signature_noclosures kwdo stmtso n {-> New closure_decl(kwwith, kwbreak, id, signature_noclosures.signature, stmtso.expr)}
278 /* TYPES *********************************************************************/
279 type~nopar~nobra {-> type}
280 = {simple} classid {-> New type(classid, [])}
281 !nobra | {generic} classid obra no types [n2]:no cbra {-> New type(classid, [types.type])}
284 = type types_tail* {-> [type, types_tail.type]};
286 = comma no type {-> type};
288 = column no type {-> type};
290 /* STATMENTS *****************************************************************/
291 stmtso~withelse {-> expr?}
292 = {oneline} stmt~withelse {-> stmt~withelse.expr}
293 | {block} n stmts [n2]:n kwend {-> stmts.expr}
294 | {emptyblock} n kwend {-> New expr.block([])}
295 | {emptyoneline} kwend {-> New expr.block([])}
298 = stmt stmts_tail* {-> New expr.block([stmt.expr, stmts_tail.expr])};
300 = n stmt {-> stmt.expr};
301 stmt~withelse {-> expr}
302 = {vardecl} vardecl~withelse {-> vardecl~withelse.expr}
303 | {assign} assignment~withelse {-> assignment~withelse.expr}
304 | {return} kwreturn expr_final~withelse? {-> New expr.return(kwreturn, expr_final~withelse.expr)}
305 | {break} kwbreak expr_final~withelse? {-> New expr.break(kwbreak, expr_final~withelse.expr)}
306 | {abort} kwabort {-> New expr.abort(kwabort)}
307 | {continue} kwcontinue expr_final~withelse? {-> New expr.continue(kwcontinue, expr_final~withelse.expr)}
308 | {do} do~withelse {-> do~withelse.expr}
309 | {if} if~withelse {-> if~withelse.expr}
310 | {while} while~withelse {-> while~withelse.expr}
311 | {for} for~withelse {-> for~withelse.expr}
312 | {assert} assert~withelse {-> assert~withelse.expr}
313 // | {expr} expr {-> expr.expr}
314 | {call} recv id args_nopar closure_defs~withelse? {-> New expr.call(recv.expr, id, [args_nopar.expr], [closure_defs~withelse.closure_def])}
315 | {super} qualified? kwsuper args_nopar {-> New expr.super(qualified, kwsuper, [args_nopar.expr])}
316 | {init} recv kwinit args_nopar {-> New expr.init(recv.expr, kwinit, [args_nopar.expr])}
319 closure_defs~withelse {-> closure_def*}
320 = {one} closure_def_last~withelse {-> [closure_def_last~withelse.closure_def]}
321 | closure_def closure_defs~withelse {-> [closure_def, closure_defs~withelse.closure_def]}
324 closure_def_last~withelse {-> closure_def}
325 = kwwith idlist? kwdo stmtso~withelse {-> New closure_def(kwwith, [idlist.id], kwdo, stmtso~withelse.expr)}
328 closure_def {-> closure_def}
329 = kwwith idlist? kwdo n stmts [n2]:n {-> New closure_def(kwwith, [idlist.id], kwdo, stmts.expr)}
330 | {empty} kwwith idlist? kwdo n {-> New closure_def(kwwith, [idlist.id], kwdo, Null)}
333 vardecl~withelse{-> expr}
334 = kwvar id typing? {-> New expr.vardecl(kwvar, id, typing.type, Null, Null)}
335 | {assign} kwvar id typing? assign no expr_final~withelse {-> New expr.vardecl(kwvar, id, typing.type, assign, expr_final~withelse.expr)}
338 assignment~withelse {-> expr}
339 = {attr} recv attrid assign expr_final~withelse {-> New expr.attr_assign(recv.expr, attrid, assign, expr_final~withelse.expr)}
340 | {call} recv id args assign expr_final~withelse {-> New expr.call_assign(recv.expr, id, [args.expr], assign, expr_final~withelse.expr)}
341 | {bra} expr_atom braargs assign expr_final~withelse {-> New expr.bra_assign(expr_atom.expr, [braargs.expr], assign, expr_final~withelse.expr)}
342 | {attr_re} recv attrid assign_op expr_final~withelse {-> New expr.attr_reassign(recv.expr, attrid, assign_op, expr_final~withelse.expr)}
343 | {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)}
344 | {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)}
351 do~withelse {-> expr}
352 = kwdo stmtso~withelse {-> New expr.do(kwdo, stmtso~withelse.expr)}
355 if~withelse {-> expr}
356 = {onelineelse} kwif no expr [n2]:no kwthen stmt_withelse kwelse stmtso~withelse {-> New expr.if(kwif, expr, stmt_withelse.expr, stmtso~withelse.expr)}
357 !withelse | {oneline} kwif no expr [n2]:no kwthen stmt {-> New expr.if(kwif, expr, stmt.expr, Null)}
358 !withelse | {block} kwif no expr [n2]:no kwthen [n3]:n stmts [n4]:n elsepartblock {-> New expr.if(kwif, expr, stmts.expr, elsepartblock.expr)}
359 !withelse | {emptyblock} kwif no expr [n2]:no kwthen [n3]:n? elsepartblock {-> New expr.if(kwif, expr, Null, elsepartblock.expr)}
361 elsepartblock {-> expr?}
362 = {else} kwelse stmtso {-> stmtso.expr}
363 | {empty} kwend {-> Null}
366 while~withelse {-> expr}
367 = kwwhile no expr [n2]:no kwdo stmtso~withelse {-> New expr.while(kwwhile, expr, kwdo, stmtso~withelse.expr)};
369 for~withelse {-> expr}
370 = kwfor no id [n2]:no kwin [n3]:no expr [n4]:no kwdo stmtso~withelse {-> New expr.for(kwfor, id, expr, kwdo, stmtso~withelse.expr)};
372 assert~withelse {-> expr}
373 = kwassert assertid? expr_final~withelse {-> New expr.assert(kwassert, assertid.id, expr_final~withelse.expr)};
377 /* EXPRESSIONS ***************************************************************/
378 expr_final~nopar~withelse~nobra {-> expr}
379 = expr~nopar~nobra {-> expr~nopar~nobra.expr}
380 | {closure_call} recv~nobra id args closure_defs~withelse {-> New expr.call(recv~nobra.expr, id, [args.expr], [closure_defs~withelse.closure_def])}
381 !nobra!nopar | {closure_bra} expr_atom braargs closure_defs~withelse {-> New expr.bra(expr_atom.expr, [braargs.expr], [closure_defs~withelse.closure_def])}
384 expr~nopar~nobra {-> expr}
385 = expr_and~nopar~nobra {-> expr_and~nopar~nobra.expr}
386 | {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)}
389 expr_and~nopar~nobra {-> expr}
390 = expr_not~nopar~nobra {-> expr_not~nopar~nobra.expr}
391 | {or} expr_and~nopar~nobra kwor no expr_not~nopar~nobra {-> New expr.or(expr_and~nopar~nobra.expr, expr_not~nopar~nobra.expr)}
392 | {and} expr_and~nopar~nobra kwand no expr_not~nopar~nobra {-> New expr.and(expr_and~nopar~nobra.expr, expr_not~nopar~nobra.expr)}
395 expr_not~nopar~nobra {-> expr}
396 = expr_eq~nopar~nobra {-> expr_eq~nopar~nobra.expr}
397 | {not} kwnot no expr_not~nopar~nobra {-> New expr.not(kwnot, expr_not~nopar~nobra.expr)}
400 expr_eq~nopar~nobra {-> expr}
401 = expr_add~nopar~nobra {-> expr_add~nopar~nobra.expr}
402 | {eq} expr_add~nopar~nobra eq no [expr2]:expr_add~nopar~nobra {-> New expr.eq(expr_add~nopar~nobra.expr, expr2.expr)}
403 | {ee} expr_add~nopar~nobra kwis no [expr2]:expr_add~nopar~nobra {-> New expr.ee(expr_add~nopar~nobra.expr, expr2.expr)}
404 | {ne} expr_add~nopar~nobra ne no [expr2]:expr_add~nopar~nobra {-> New expr.ne(expr_add~nopar~nobra.expr, expr2.expr)}
405 | {lt} expr_add~nopar~nobra lt no [expr2]:expr_add~nopar~nobra {-> New expr.lt(expr_add~nopar~nobra.expr, expr2.expr)}
406 | {le} expr_add~nopar~nobra le no [expr2]:expr_add~nopar~nobra {-> New expr.le(expr_add~nopar~nobra.expr, expr2.expr)}
407 | {gt} expr_add~nopar~nobra gt no [expr2]:expr_add~nopar~nobra {-> New expr.gt(expr_add~nopar~nobra.expr, expr2.expr)}
408 | {ge} expr_add~nopar~nobra ge no [expr2]:expr_add~nopar~nobra {-> New expr.ge(expr_add~nopar~nobra.expr, expr2.expr)}
409 | {starship} expr_add~nopar~nobra starship no [expr2]:expr_add~nopar~nobra {-> New expr.starship(expr_add~nopar~nobra.expr, expr2.expr)}
410 | {isa} expr_add~nopar~nobra kwisa no type~nopar~nobra {-> New expr.isa(expr_add~nopar~nobra.expr, type~nopar~nobra.type)}
413 expr_add~nopar~nobra {-> expr}
414 = expr_mul~nopar~nobra {-> expr_mul~nopar~nobra.expr}
415 | {plus} expr_add~nopar~nobra plus no [expr2]:expr_mul~nopar~nobra {-> New expr.plus(expr_add~nopar~nobra.expr, expr2.expr)}
416 | {minus} expr_add~nopar~nobra minus no [expr2]:expr_mul~nopar~nobra {-> New expr.minus(expr_add~nopar~nobra.expr, expr2.expr)}
419 expr_mul~nopar~nobra {-> expr}
420 = expr_minus~nopar~nobra {-> expr_minus~nopar~nobra.expr}
421 | {star} expr_mul~nopar~nobra star no [expr2]:expr_minus~nopar~nobra {-> New expr.star(expr_mul~nopar~nobra.expr, expr2.expr)}
422 | {slash} expr_mul~nopar~nobra slash no [expr2]:expr_minus~nopar~nobra {-> New expr.slash(expr_mul~nopar~nobra.expr, expr2.expr)}
423 | {percent} expr_mul~nopar~nobra percent no [expr2]:expr_minus~nopar~nobra {-> New expr.percent(expr_mul~nopar~nobra.expr, expr2.expr)}
426 expr_minus~nopar~nobra {-> expr}
427 = expr_new~nopar~nobra {-> expr_new~nopar~nobra.expr}
428 | {minus} minus no expr_minus~nopar~nobra {-> New expr.uminus(minus, expr_minus~nopar~nobra.expr)}
429 | {once} kwonce no expr_minus~nopar~nobra {-> New expr.once(kwonce, expr_minus~nopar~nobra.expr)}
432 expr_new~nopar~nobra {-> expr}
433 = expr_atom~nopar~nobra {-> expr_atom~nopar~nobra.expr}
434 | {new} kwnew no type~nopar~nobra args {-> New expr.new(kwnew, type~nopar~nobra.type, Null, [args.expr])}
437 expr_atom~nopar~nobra {-> expr}
438 = {attr} recv~nopar~nobra attrid {-> New expr.attr(recv~nopar~nobra.expr, attrid)}
439 | {call} recv~nopar~nobra id args {-> New expr.call(recv~nopar~nobra.expr, id, [args.expr], [])}
440 | {super} qualified? kwsuper args {-> New expr.super(qualified, kwsuper, [args.expr])}
441 | {init} recv~nopar~nobra kwinit args {-> New expr.init(recv~nopar~nobra.expr, kwinit, [args.expr])}
442 !nobra!nopar | {bra} expr_atom braargs {-> New expr.bra(expr_atom.expr, [braargs.expr], [])}
443 | {new} kwnew no type~nopar~nobra dot [n2]:no id args {-> New expr.new(kwnew, type~nopar~nobra.type, id, [args.expr])}
444 !nobra!nopar | {range} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no cbra {-> New expr.crange(expr, expr2.expr)}
445 !nobra!nopar | {orange} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no [cbra]:obra {-> New expr.orange(expr, expr2.expr)}
446 !nobra!nopar | {array} braargs {-> New expr.array([braargs.expr])}
447 | {self} kwself {-> New expr.self(kwself)}
448 | {true} kwtrue {-> New expr.true(kwtrue)}
449 | {false} kwfalse {-> New expr.false(kwfalse)}
450 | {null} kwnull {-> New expr.null(kwnull)}
451 | {int} number {-> New expr.int(number)}
452 | {float} float {-> New expr.float(float)}
453 | {char} char {-> New expr.char(char)}
454 | {string} string {-> New expr.string(string)}
455 | {superstring} superstring {-> superstring.expr}
456 !nopar | {par} opar expr cpar {-> expr}
457 | {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)}
460 superstring {-> expr}
461 = superstring_start superstring_middle* superstring_end {-> New expr.superstring([superstring_start.expr, superstring_middle.expr, superstring_end.expr])};
462 superstring_start {-> expr*}
463 = start_string_p no expr [n2]:no {-> [start_string_p.expr, expr]};
464 start_string_p {-> expr}
465 = start_string {-> New expr.start_string(start_string)};
466 superstring_middle {-> expr*}
467 = mid_string_p no expr [n2]:no {-> [mid_string_p.expr, expr]};
468 mid_string_p {-> expr}
469 = mid_string {-> New expr.mid_string(mid_string)};
470 superstring_end {-> expr}
471 = end_string {-> New expr.end_string(end_string)};
473 /* MISC **********************************************************************/
475 recv~nopar~nobra {-> expr}
476 = expr_atom~nopar~nobra dot no {-> expr_atom~nopar~nobra.expr}
477 | {implicit} {-> New expr.implicit_self()}
481 = opar no expr [n2]:no args_tail* cpar {-> [expr, args_tail.expr]}
482 | {emptypar} opar no cpar {-> []}
485 args_nopar {-> expr*}
486 = opar no expr [n2]:no args_tail* cpar {-> [expr, args_tail.expr]}
487 | {onearg} expr_nopar {-> [expr_nopar.expr]}
488 | {emptypar} opar no cpar {-> []}
492 = obra no expr [n2]:no args_tail* cbra {-> [expr, args_tail.expr]};
494 = comma no expr [n2]:no {-> expr};
496 = {single} id {-> [id]}
497 | {more} idlist no comma [n2]:no id {-> [idlist.id, id]}
501 = {cla} modquad* classquad {-> New qualified([modquad.id], classquad.classid)}
502 | {mod} modquad+ {-> New qualified([modquad.id], Null)}
505 = id quad no {-> id};
506 classquad {-> classid}
507 = classid quad no {-> classid};
509 n1 = {a} comment | {b} eol;
511 = {a} n2? comment+ {-> New doc([comment])}
520 = {a} n2? comment+ eol+
524 /*****************************************************************************/
526 /*****************************************************************************/
528 module = packagedecl? [imports]:import* [classdefs]:classdef*;
533 import = visibility kwimport id
534 | {no} visibility kwimport kwend
539 | {private} kwprivate
540 | {protected} kwprotected
541 | {intrude} kwintrude
544 classdef = doc? kwredef? visibility classkind [id]:classid? [formaldefs]:formaldef* [superclasses]:superclass* [propdefs]:propdef*
545 | {top} [propdefs]:propdef*
546 | {main} [propdefs]:propdef*
550 | {abstract} kwabstract kwclass
551 | {interface} kwinterface
552 | {universal} kwuniversal
554 formaldef = [id]:classid type?;
555 superclass = kwspecial type;
558 propdef = {attr} doc? [readable]:able? [writable]:able? kwredef? visibility kwattr [id]:attrid type? expr?
559 | {meth} doc? kwredef? visibility methid signature
560 | {deferred_meth} doc? kwredef? visibility kwmeth methid signature
561 | {intern_meth} doc? kwredef? visibility kwmeth methid signature
562 | {extern_meth} doc? kwredef? visibility kwmeth methid signature [extern]:string?
563 | {concrete_meth} doc? kwredef? visibility kwmeth methid signature [block]:expr?
564 | {concrete_init} doc? kwredef? visibility kwinit methid? signature [block]:expr?
565 | {main_meth} kwredef? [block]:expr?
566 | {type} doc? kwredef? visibility kwtype [id]:classid type
569 able = {read} kwredef? kwreadable
570 | {write} kwredef? kwwritable
573 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 | {bra} obra cbra | {starship} starship | {assign} id assign | {braassign} obra cbra assign;
575 signature = [params]:param* type? [closure_decls]:closure_decl*;
577 param = id type? dotdotdot?
580 closure_decl = kwwith kwbreak? id signature expr?
583 type = [id]:classid [types]:type*;
586 | {vardecl} kwvar id type? assign? expr?
587 | {return} kwreturn expr?
588 | {break} kwbreak expr?
590 | {continue} kwcontinue expr?
591 | {do} kwdo [block]:expr?
592 | {if} kwif expr [then]:expr? [else]:expr?
593 | {ifexpr} kwif expr kwthen [then]:expr kwelse [else]:expr
594 | {while} kwwhile expr kwdo [block]:expr?
595 | {for} kwfor id expr kwdo [block]:expr?
596 | {assert} kwassert id? expr
599 | {binop} expr [expr2]:expr
600 | {or} expr [expr2]:expr
601 | {and} expr [expr2]:expr
603 | {eq} expr [expr2]:expr
604 | {ee} expr [expr2]:expr
605 | {ne} expr [expr2]:expr
606 | {lt} expr [expr2]:expr
607 | {le} expr [expr2]:expr
608 | {gt} expr [expr2]:expr
609 | {ge} expr [expr2]:expr
611 | {plus} expr [expr2]:expr
612 | {minus} expr [expr2]:expr
613 | {starship} expr [expr2]:expr
614 | {star} expr [expr2]:expr
615 | {slash} expr [expr2]:expr
616 | {percent} expr [expr2]:expr
617 | {uminus} minus expr
618 | {new} kwnew type id? [args]:expr*
619 | {attr} expr [id]:attrid
620 | {attr_assign} expr [id]:attrid assign [value]:expr
621 | {attr_reassign} expr [id]:attrid assign_op [value]:expr
622 | {call} expr id [args]:expr* [closure_defs]:closure_def*
623 | {call_assign} expr id [args]:expr* assign [value]:expr
624 | {call_reassign} expr id [args]:expr* assign_op [value]:expr
625 | {super} qualified? kwsuper [args]:expr*
626 | {init} expr kwinit [args]:expr*
627 | {bra} expr [args]:expr* [closure_defs]:closure_def*
628 | {bra_assign} expr [args]:expr* assign [value]:expr
629 | {bra_reassign} expr [args]:expr* assign_op [value]:expr
631 | {var_assign} id assign [value]:expr
632 | {var_reassign} id assign_op [value]:expr
633 | {range} expr [expr2]:expr
634 | {crange} expr [expr2]:expr
635 | {orange} expr [expr2]:expr
636 | {array} [exprs]:expr*
646 | {start_string} [string]:start_string
647 | {mid_string} [string]:mid_string
648 | {end_string} [string]:end_string
649 | {superstring} [exprs]:expr*
651 | {as_cast} expr kwas type
659 = kwwith id* kwdo expr?
662 qualified = id* classid? ;
666 /*****************************************************************************/