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import {abstract} from './common.js';import * as pexprs from './pexprs-main.js';
// --------------------------------------------------------------------// Operations// --------------------------------------------------------------------
pexprs.PExpr.prototype.getArity = abstract('getArity');
pexprs.any.getArity =  pexprs.end.getArity =  pexprs.Terminal.prototype.getArity =  pexprs.Range.prototype.getArity =  pexprs.Param.prototype.getArity =  pexprs.Apply.prototype.getArity =  pexprs.UnicodeChar.prototype.getArity =    function() {      return 1;    };
pexprs.Alt.prototype.getArity = function() {  // This is ok b/c all terms must have the same arity -- this property is  // checked by the Grammar constructor.  return this.terms.length === 0 ? 0 : this.terms[0].getArity();};
pexprs.Seq.prototype.getArity = function() {  let arity = 0;  for (let idx = 0; idx < this.factors.length; idx++) {    arity += this.factors[idx].getArity();  }  return arity;};
pexprs.Iter.prototype.getArity = function() {  return this.expr.getArity();};
pexprs.Not.prototype.getArity = function() {  return 0;};
pexprs.Lookahead.prototype.getArity = pexprs.Lex.prototype.getArity = function() {  return this.expr.getArity();};