kwnullable = 'nullable';
kwisset = 'isset';
kwlabel = 'label';
+kwwith = 'with';
kwdebug = '__debug__';
opar = '(';
| {while} while~withelse {-> while~withelse.expr}
| {loop} loop~withelse {-> loop~withelse.expr}
| {for} for~withelse {-> for~withelse.expr}
+ | {with} with~withelse {-> with~withelse.expr}
| {assert} assert~withelse {-> assert~withelse.expr}
!noexpr | {call} recv qid args_nopar {-> New expr.call(recv.expr, qid.id, args_nopar.exprs)}
!noexpr | {super} qualified_o kwsuper args_nopar {-> New expr.super(qualified_o.qualified, kwsuper, args_nopar.exprs)}
| {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)}
;
+with~withelse {-> expr}
+ = kwwith no withexpr [n4]:no kwdo stmtso_withend label {-> New expr.with(kwwith, withexpr.expr, kwdo, stmtso_withend.expr, label)}
+ | {nolabel} kwwith no withexpr [n4]:no kwdo stmtso~withelse {-> New expr.with(kwwith, withexpr.expr, kwdo, stmtso~withelse.expr, Null)}
+ ;
+
+withexpr {-> expr}
+ = {assign} id annotations? typing_o assign no expr {-> New expr.vardecl(Null, id, typing_o.type, assign, expr.expr, annotations)}
+ | expr {-> expr}
+ ;
+
assert~withelse {-> expr}
= {else} kwassert assertid? expr kwelse stmtso~withelse {-> New expr.assert(kwassert, assertid.id, expr, stmtso~withelse.expr)}
!withelse| {noelse} kwassert assertid? expr {-> New expr.assert(kwassert, assertid.id, expr, Null)}
label = kwlabel id?;
expr = {block} expr* kwend?
- | {vardecl} kwvar id type? assign? expr? annotations?
+ | {vardecl} kwvar? id type? assign? expr? annotations?
| {return} kwreturn? expr?
| {break} kwbreak label?
| {abort} kwabort
| {while} kwwhile expr kwdo [block]:expr? label?
| {loop} kwloop [block]:expr? label?
| {for} kwfor [ids]:id* expr kwdo [block]:expr? label?
+ | {with} kwwith expr kwdo [block]:expr? label?
| {assert} kwassert id? expr [else]:expr?
| {once} kwonce expr
| {send} expr