2 /* This file is part of NIT ( http://www.nitlanguage.org ).
4 * Copyright 2008 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';
133 classid = uppercase letter*;
134 id = lowercase letter*;
135 attrid = '_' lowercase letter*;
138 float = digit* '.' digit+;
139 char = ''' [any - ''']* ''';
140 string = '"' str_body '"';
141 start_string = '"' str_body '{';
142 mid_string = '}' str_body '{';
143 end_string = '}' str_body '"';
146 /*****************************************************************************/
148 /*****************************************************************************/
152 /*****************************************************************************/
154 /*****************************************************************************/
156 /* MODULES *******************************************************************/
158 = 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])};
161 = [doc]:no kwpackage no id [n2]:n1 {-> New packagedecl(doc.doc, kwpackage, id)};
164 = [doc]:no visibility kwimport no id [n2]:n1 {-> New import(visibility, kwimport, id)}
165 | {no} [doc]:no visibility kwimport no kwend [n2]:n1 {-> New import.no(visibility, kwimport, kwend)}
168 implicit_top_class {-> classdef}
169 = tl_propdefs {-> New classdef.top([tl_propdefs.propdef])};
171 implicit_main_class {-> classdef?}
172 = implicit_main_meth {-> New classdef.main([implicit_main_meth.propdef])}
175 implicit_main_meth {-> propdef}
176 = [doc]:no stmts no {-> New propdef.main_meth(Null, stmts.expr)};
178 /* CLASSES *******************************************************************/
180 = [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])};
182 = kwredef? {-> kwredef};
185 | {abstract} kwabstract kwclass
186 | {interface} kwinterface
187 | {universal} kwuniversal
190 formaldefs {-> formaldef*}
191 = obra no formaldef formaldefs_tail* [n2]:no cbra {-> [formaldef, formaldefs_tail.formaldef]};
192 formaldefs_tail {-> formaldef}
193 = comma no formaldef {-> formaldef};
195 = classid typing? {-> New formaldef(classid, typing.type)};
197 special {-> superclass}
198 = no kwspecial [n2]:no type {-> New superclass(kwspecial, type)};
200 propdefs {-> propdef*}
201 = propdef n1 propdefs_tail* {-> [propdef, propdefs_tail.propdef]};
202 propdefs_tail {-> propdef}
203 = propdef n1 {-> propdef};
205 = {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)}
206 | {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)}
207 | {deferred} [doc]:no redef visibility kwmeth methid signature kwis kwabstract {-> New propdef.deferred_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature)}
208 | {intern} [doc]:no redef visibility kwmeth methid signature kwis kwintern {-> New propdef.intern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature)}
209 | {extern} [doc]:no redef visibility kwmeth methid signature kwis kwextern string? {-> New propdef.extern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature, string)}
210 | {meth} [doc]:no redef visibility kwmeth methid signature no kwdo stmtso kwend? {-> New propdef.concrete_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature, stmtso.expr)}
211 | {init} [doc]:no redef visibility kwinit methid? signature no kwdo stmtso kwend? {-> New propdef.concrete_init(doc.doc, redef.kwredef, visibility, kwinit, methid, signature, stmtso.expr)}
212 | {type} [doc]:no redef visibility kwtype classid typing {-> New propdef.type(doc.doc, redef.kwredef, visibility, kwtype, classid, typing.type)}
215 = redef kwreadable {-> New able.read(redef.kwredef, kwreadable)}
219 = redef kwwritable {-> New able.write(redef.kwredef, kwwritable)}
223 tl_propdefs {-> propdef*}
224 = tl_propdef n1 tl_propdefs_tail* {-> [tl_propdef.propdef, tl_propdefs_tail.propdef]};
225 tl_propdefs_tail {-> propdef}
226 = tl_propdef n1 {-> tl_propdef.propdef};
227 tl_propdef {-> propdef}
228 = {extern} [doc]:no redef visibility kwmeth methid signature kwis kwextern string? {-> New propdef.extern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature, string)}
229 | {meth} [doc]:no redef visibility kwmeth methid signature no kwdo stmtso {-> New propdef.concrete_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature, stmtso.expr)}
233 = {public} {-> New visibility.public()}
234 | {private} kwprivate no {-> New visibility.private(kwprivate)}
235 | {protected} kwprotected no {-> New visibility.protected(kwprotected)}
236 | {intrude} kwintrude no {-> New visibility.intrude(kwintrude)}
253 | {starship} starship
255 | {braassign} obra cbra assign
259 = params? typing? {-> New signature([params.param], typing.type)};
262 = opar no param params_tail* [n2]:no cpar {-> [param, params_tail.param]}
263 | {empty} opar no cpar {-> []}
265 params_tail {-> param}
266 = comma no param {-> param};
268 = {untyped} id {-> New param(id, Null, Null)}
269 | id typing dotdotdot? {-> New param(id, typing.type, dotdotdot)}
272 /* TYPES *********************************************************************/
273 type/*B3*//*B*/ {-> type}
274 = {simple} classid {-> New type(classid, [])}
275 /*N*/ | {generic} classid obra no types [n2]:no cbra {-> New type(classid, [types.type])}
279 = type types_tail* {-> [type, types_tail.type]};
281 = comma no type {-> type};
283 = column no type {-> type};
285 /* STATMENTS *****************************************************************/
286 stmtso/*B2*/ {-> expr?}
287 = {oneline} stmt/*B2*/ {-> stmt/*B2*/.expr}
288 | {block} n stmts [n2]:n kwend {-> stmts.expr}
289 | {emptyblock} n kwend {-> Null}
290 | {emptyoneline} kwend {-> Null}
293 = stmt stmts_tail* {-> New expr.block([stmt.expr, stmts_tail.expr])};
295 = n stmt {-> stmt.expr};
297 = {vardecl} vardecl {-> vardecl.expr}
298 | {assign} assignment {-> assignment.expr}
299 | {return} kwreturn expr? {-> New expr.return(kwreturn, expr)}
300 | {break} kwbreak {-> New expr.break(kwbreak)}
301 | {abort} kwabort {-> New expr.abort(kwabort)}
302 | {continue} kwcontinue {-> New expr.continue(kwcontinue)}
303 | {do} do/*B2*/ {-> do/*B2*/.expr}
304 | {if} if/*B2*/ {-> if/*B2*/.expr}
305 | {while} while/*B2*/ {-> while/*B2*/.expr}
306 | {for} for/*B2*/ {-> for/*B2*/.expr}
307 | {assert} assert {-> assert.expr}
308 // | {expr} expr {-> expr.expr}
309 | {call} recv id args_nopar {-> New expr.call(recv.expr, id, [args_nopar.expr])}
310 | {super} qualified? kwsuper args_nopar {-> New expr.super(qualified, kwsuper, [args_nopar.expr])}
311 | {init} recv kwinit args_nopar {-> New expr.init(recv.expr, kwinit, [args_nopar.expr])}
315 = kwvar id typing? {-> New expr.vardecl(kwvar, id, typing.type, Null, Null)}
316 | {assign} kwvar id typing? assign no expr {-> New expr.vardecl(kwvar, id, typing.type, assign, expr)}
320 = {attr} recv attrid assign expr {-> New expr.attr_assign(recv.expr, attrid, assign, expr)}
321 | {call} recv id args assign expr {-> New expr.call_assign(recv.expr, id, [args.expr], assign, expr)}
322 | {bra} expr_atom braargs assign expr {-> New expr.bra_assign(expr_atom.expr, [braargs.expr], assign, expr)}
323 | {attr_re} recv attrid assign_op expr {-> New expr.attr_reassign(recv.expr, attrid, assign_op, expr)}
324 | {call_re} recv id args assign_op expr {-> New expr.call_reassign(recv.expr, id, [args.expr], assign_op, expr)}
325 | {bra_re} expr_atom braargs assign_op expr {-> New expr.bra_reassign(expr_atom.expr, [braargs.expr], assign_op, expr)}
333 = kwdo stmtso/*B2*/ {-> New expr.do(kwdo, stmtso/*B2*/.expr)}
337 = {onelineelse} kwif no expr [n2]:no kwthen stmt_withelse kwelse stmtso/*B2*/ {-> New expr.if(kwif, expr, stmt_withelse.expr, stmtso/*B2*/.expr)}
338 /*N2*/ | {oneline} kwif no expr [n2]:no kwthen stmt {-> New expr.if(kwif, expr, stmt.expr, Null)}
339 /*N2*/ | {block} kwif no expr [n2]:no kwthen [n3]:n stmts [n4]:n elsepartblock {-> New expr.if(kwif, expr, stmts.expr, elsepartblock.expr)}
340 /*N2*/ | {emptyblock} kwif no expr [n2]:no kwthen [n3]:n? elsepartblock {-> New expr.if(kwif, expr, Null, elsepartblock.expr)}
342 elsepartblock {-> expr?}
343 = {else} kwelse stmtso {-> stmtso.expr}
344 | {empty} kwend {-> Null}
347 while/*B2*/ {-> expr}
348 = kwwhile no expr [n2]:no kwdo stmtso/*B2*/ {-> New expr.while(kwwhile, expr, kwdo, stmtso/*B2*/.expr)};
351 = for_vardecl [n4]:no kwdo stmtso/*B2*/ {-> New expr.for(for_vardecl.expr, kwdo, stmtso/*B2*/.expr)};
352 for_vardecl {-> expr}
353 = kwfor no id [n2]:no kwin [n3]:no expr {-> New expr.for_vardecl(kwfor, id, expr)};
356 = kwassert assertid? expr {-> New expr.assert(kwassert, assertid.id, expr)};
360 /* EXPRESSIONS ***************************************************************/
361 expr/*B3*//*B*/ {-> expr}
362 = expr_and/*B3*//*B*/ {-> expr_and/*B3*//*B*/.expr}
363 | {ifexpr} kwif [n1]:no expr [n2]:no kwthen [n3]:no [then]:expr [n4]:no kwelse [n5]:no [else]:expr/*B3*//*B*/ {-> New expr.ifexpr(kwif, expr, kwthen, then, kwelse, else.expr)}
366 expr_and/*B3*//*B*/ {-> expr}
367 = expr_not/*B3*//*B*/ {-> expr_not/*B3*//*B*/.expr}
368 | {or} expr_and/*B3*//*B*/ kwor no expr_not/*B3*//*B*/ {-> New expr.or(expr_and/*B3*//*B*/.expr, expr_not/*B3*//*B*/.expr)}
369 | {and} expr_and/*B3*//*B*/ kwand no expr_not/*B3*//*B*/ {-> New expr.and(expr_and/*B3*//*B*/.expr, expr_not/*B3*//*B*/.expr)}
372 expr_not/*B3*//*B*/ {-> expr}
373 = expr_eq/*B3*//*B*/ {-> expr_eq/*B3*//*B*/.expr}
374 | {not} kwnot no expr_not/*B3*//*B*/ {-> New expr.not(kwnot, expr_not/*B3*//*B*/.expr)}
377 expr_eq/*B3*//*B*/ {-> expr}
378 = expr_add/*B3*//*B*/ {-> expr_add/*B3*//*B*/.expr}
379 | {eq} expr_add/*B3*//*B*/ eq no [expr2]:expr_add/*B3*//*B*/ {-> New expr.eq(expr_add/*B3*//*B*/.expr, expr2.expr)}
380 | {ee} expr_add/*B3*//*B*/ kwis no [expr2]:expr_add/*B3*//*B*/ {-> New expr.ee(expr_add/*B3*//*B*/.expr, expr2.expr)}
381 | {ne} expr_add/*B3*//*B*/ ne no [expr2]:expr_add/*B3*//*B*/ {-> New expr.ne(expr_add/*B3*//*B*/.expr, expr2.expr)}
382 | {lt} expr_add/*B3*//*B*/ lt no [expr2]:expr_add/*B3*//*B*/ {-> New expr.lt(expr_add/*B3*//*B*/.expr, expr2.expr)}
383 | {le} expr_add/*B3*//*B*/ le no [expr2]:expr_add/*B3*//*B*/ {-> New expr.le(expr_add/*B3*//*B*/.expr, expr2.expr)}
384 | {gt} expr_add/*B3*//*B*/ gt no [expr2]:expr_add/*B3*//*B*/ {-> New expr.gt(expr_add/*B3*//*B*/.expr, expr2.expr)}
385 | {ge} expr_add/*B3*//*B*/ ge no [expr2]:expr_add/*B3*//*B*/ {-> New expr.ge(expr_add/*B3*//*B*/.expr, expr2.expr)}
386 | {starship} expr_add/*B3*//*B*/ starship no [expr2]:expr_add/*B3*//*B*/ {-> New expr.starship(expr_add/*B3*//*B*/.expr, expr2.expr)}
387 | {isa} expr_add/*B3*//*B*/ kwisa no type/*B3*//*B*/ {-> New expr.isa(expr_add/*B3*//*B*/.expr, type/*B3*//*B*/.type)}
390 expr_add/*B3*//*B*/ {-> expr}
391 = expr_mul/*B3*//*B*/ {-> expr_mul/*B3*//*B*/.expr}
392 | {plus} expr_add/*B3*//*B*/ plus no [expr2]:expr_mul/*B3*//*B*/ {-> New expr.plus(expr_add/*B3*//*B*/.expr, expr2.expr)}
393 | {minus} expr_add/*B3*//*B*/ minus no [expr2]:expr_mul/*B3*//*B*/ {-> New expr.minus(expr_add/*B3*//*B*/.expr, expr2.expr)}
396 expr_mul/*B3*//*B*/ {-> expr}
397 = expr_minus/*B3*//*B*/ {-> expr_minus/*B3*//*B*/.expr}
398 | {star} expr_mul/*B3*//*B*/ star no [expr2]:expr_minus/*B3*//*B*/ {-> New expr.star(expr_mul/*B3*//*B*/.expr, expr2.expr)}
399 | {slash} expr_mul/*B3*//*B*/ slash no [expr2]:expr_minus/*B3*//*B*/ {-> New expr.slash(expr_mul/*B3*//*B*/.expr, expr2.expr)}
400 | {percent} expr_mul/*B3*//*B*/ percent no [expr2]:expr_minus/*B3*//*B*/ {-> New expr.percent(expr_mul/*B3*//*B*/.expr, expr2.expr)}
403 expr_minus/*B3*//*B*/ {-> expr}
404 = expr_new/*B3*//*B*/ {-> expr_new/*B3*//*B*/.expr}
405 | {minus} minus no expr_minus/*B3*//*B*/ {-> New expr.uminus(minus, expr_minus/*B3*//*B*/.expr)}
406 | {once} kwonce no expr_minus/*B3*//*B*/ {-> New expr.once(kwonce, expr_minus/*B3*//*B*/.expr)}
409 expr_new/*B3*//*B*/ {-> expr}
410 = expr_atom/*B3*//*B*/ {-> expr_atom/*B3*//*B*/.expr}
411 | {new} kwnew no type/*B3*//*B*/ args {-> New expr.new(kwnew, type/*B3*//*B*/.type, Null, [args.expr])}
414 expr_atom/*B3*//*B*/ {-> expr}
415 = {attr} recv/*B3*//*B*/ attrid {-> New expr.attr(recv/*B3*//*B*/.expr, attrid)}
416 | {call} recv/*B3*//*B*/ id args {-> New expr.call(recv/*B3*//*B*/.expr, id, [args.expr])}
417 | {super} qualified? kwsuper args {-> New expr.super(qualified, kwsuper, [args.expr])}
418 | {init} recv/*B3*//*B*/ kwinit args {-> New expr.init(recv/*B3*//*B*/.expr, kwinit, [args.expr])}
419 /*N*//*N3*/ | {bra} expr_atom braargs {-> New expr.bra(expr_atom.expr, [braargs.expr])}
420 | {new} kwnew no type/*B3*//*B*/ dot [n2]:no id args {-> New expr.new(kwnew, type/*B3*//*B*/.type, id, [args.expr])}
421 /*N*//*N3*/ | {range} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no cbra {-> New expr.crange(expr, expr2.expr)}
422 /*N*//*N3*/ | {orange} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no [cbra]:obra {-> New expr.orange(expr, expr2.expr)}
423 /*N*//*N3*/ | {array} braargs {-> New expr.array([braargs.expr])}
424 | {self} kwself {-> New expr.self(kwself)}
425 | {true} kwtrue {-> New expr.true(kwtrue)}
426 | {false} kwfalse {-> New expr.false(kwfalse)}
427 | {null} kwnull {-> New expr.null(kwnull)}
428 | {int} number {-> New expr.int(number)}
429 | {float} float {-> New expr.float(float)}
430 | {char} char {-> New expr.char(char)}
431 | {string} string {-> New expr.string(string)}
432 | {superstring} superstring {-> superstring.expr}
433 /*N3*/ | {par} opar expr cpar {-> expr}
434 | {as_cast} expr_atom/*B3*//*B*/ dot no kwas [n2]:no opar [n3]:no type [n4]:no cpar {-> New expr.as_cast(expr_atom/*B3*//*B*/.expr, kwas, type)}
437 superstring {-> expr}
438 = superstring_start superstring_middle* superstring_end {-> New expr.superstring([superstring_start.expr, superstring_middle.expr, superstring_end.expr])};
439 superstring_start {-> expr*}
440 = start_string_p no expr [n2]:no {-> [start_string_p.expr, expr]};
441 start_string_p {-> expr}
442 = start_string {-> New expr.start_string(start_string)};
443 superstring_middle {-> expr*}
444 = mid_string_p no expr [n2]:no {-> [mid_string_p.expr, expr]};
445 mid_string_p {-> expr}
446 = mid_string {-> New expr.mid_string(mid_string)};
447 superstring_end {-> expr}
448 = end_string {-> New expr.end_string(end_string)};
450 /* MISC **********************************************************************/
452 recv/*B3*//*B*/ {-> expr}
453 = expr_atom/*B3*//*B*/ dot no {-> expr_atom/*B3*//*B*/.expr}
454 | {implicit} {-> New expr.implicit_self()}
458 = opar no expr [n2]:no args_tail* cpar {-> [expr, args_tail.expr]}
459 | {emptypar} opar no cpar {-> []}
462 args_nopar {-> expr*}
463 = opar no expr [n2]:no args_tail* cpar {-> [expr, args_tail.expr]}
464 | {onearg} expr_nopar {-> [expr_nopar.expr]}
465 | {emptypar} opar no cpar {-> []}
469 = obra no expr [n2]:no args_tail* cbra {-> [expr, args_tail.expr]};
471 = comma no expr [n2]:no {-> expr};
474 = {cla} modquad* classquad {-> New qualified([modquad.id], classquad.classid)}
475 | {mod} modquad+ {-> New qualified([modquad.id], Null)}
478 = id quad no {-> id};
479 classquad {-> classid}
480 = classid quad no {-> classid};
482 n1 = {a} comment | {b} eol;
484 = {a} n2? comment+ {-> New doc([comment])}
493 = {a} n2? comment+ eol+
497 /* EXPR NO BRACKETS **********************************************************/
498 /* since there is no shift/reduce conflict handling in sablecc, the following
499 * is a duplication of previous productions minus some alternative where '['
500 * are not protected. */
506 /*****************************************************************************/
508 /*****************************************************************************/
510 module = packagedecl? [imports]:import* [classdefs]:classdef*;
515 import = visibility kwimport id
516 | {no} visibility kwimport kwend
521 | {private} kwprivate
522 | {protected} kwprotected
523 | {intrude} kwintrude
526 classdef = doc? kwredef? visibility classkind [id]:classid? [formaldefs]:formaldef* [superclasses]:superclass* [propdefs]:propdef*
527 | {top} [propdefs]:propdef*
528 | {main} [propdefs]:propdef*
532 | {abstract} kwabstract kwclass
533 | {interface} kwinterface
534 | {universal} kwuniversal
536 formaldef = [id]:classid type?;
537 superclass = kwspecial type;
540 propdef = {attr} doc? [readable]:able? [writable]:able? kwredef? visibility kwattr [id]:attrid type? expr?
541 | {meth} doc? kwredef? visibility methid signature
542 | {deferred_meth} doc? kwredef? visibility kwmeth methid signature
543 | {intern_meth} doc? kwredef? visibility kwmeth methid signature
544 | {extern_meth} doc? kwredef? visibility kwmeth methid signature [extern]:string?
545 | {concrete_meth} doc? kwredef? visibility kwmeth methid signature [block]:expr?
546 | {concrete_init} doc? kwredef? visibility kwinit methid? signature [block]:expr?
547 | {main_meth} kwredef? [block]:expr?
548 | {type} doc? kwredef? visibility kwtype [id]:classid type
551 able = {read} kwredef? kwreadable
552 | {write} kwredef? kwwritable
555 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;
557 signature = [params]:param* type?;
559 param = id type? dotdotdot?
562 type = [id]:classid [types]:type*;
565 | {vardecl} kwvar id type? assign? expr?
566 | {return} kwreturn expr?
569 | {continue} kwcontinue
570 | {do} kwdo [block]:expr?
571 | {if} kwif expr [then]:expr? [else]:expr?
572 | {ifexpr} kwif expr kwthen [then]:expr kwelse [else]:expr
573 | {while} kwwhile expr kwdo [block]:expr?
574 | {for} [vardecl]:expr kwdo [block]:expr?
575 | {for_vardecl} kwfor id expr
576 | {assert} kwassert id? expr
579 | {binop} expr [expr2]:expr
580 | {or} expr [expr2]:expr
581 | {and} expr [expr2]:expr
583 | {eq} expr [expr2]:expr
584 | {ee} expr [expr2]:expr
585 | {ne} expr [expr2]:expr
586 | {lt} expr [expr2]:expr
587 | {le} expr [expr2]:expr
588 | {gt} expr [expr2]:expr
589 | {ge} expr [expr2]:expr
591 | {plus} expr [expr2]:expr
592 | {minus} expr [expr2]:expr
593 | {starship} expr [expr2]:expr
594 | {star} expr [expr2]:expr
595 | {slash} expr [expr2]:expr
596 | {percent} expr [expr2]:expr
597 | {uminus} minus expr
598 | {new} kwnew type id? [args]:expr*
599 | {attr} expr [id]:attrid
600 | {attr_assign} expr [id]:attrid assign [value]:expr
601 | {attr_reassign} expr [id]:attrid assign_op [value]:expr
602 | {call} expr id [args]:expr*
603 | {call_assign} expr id [args]:expr* assign [value]:expr
604 | {call_reassign} expr id [args]:expr* assign_op [value]:expr
605 | {super} qualified? kwsuper [args]:expr*
606 | {init} expr kwinit [args]:expr*
607 | {bra} expr [args]:expr*
608 | {bra_assign} expr [args]:expr* assign [value]:expr
609 | {bra_reassign} expr [args]:expr* assign_op [value]:expr
611 | {var_assign} id assign [value]:expr
612 | {var_reassign} id assign_op [value]:expr
613 | {range} expr [expr2]:expr
614 | {crange} expr [expr2]:expr
615 | {orange} expr [expr2]:expr
616 | {array} [exprs]:expr*
626 | {start_string} [string]:start_string
627 | {mid_string} [string]:mid_string
628 | {end_string} [string]:end_string
629 | {superstring} [exprs]:expr*
631 | {as_cast} expr kwas type
638 qualified = id* classid? ;
642 /*****************************************************************************/