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import {abstract} from './common.js';import * as pexprs from './pexprs-main.js';
// --------------------------------------------------------------------// Operations// --------------------------------------------------------------------
/*  Return true if we should skip spaces preceding this expression in a syntactic context.*/pexprs.PExpr.prototype.allowsSkippingPrecedingSpace = abstract('allowsSkippingPrecedingSpace');
/*  Generally, these are all first-order expressions and (with the exception of Apply)  directly read from the input stream.*/pexprs.any.allowsSkippingPrecedingSpace =  pexprs.end.allowsSkippingPrecedingSpace =  pexprs.Apply.prototype.allowsSkippingPrecedingSpace =  pexprs.Terminal.prototype.allowsSkippingPrecedingSpace =  pexprs.Range.prototype.allowsSkippingPrecedingSpace =  pexprs.UnicodeChar.prototype.allowsSkippingPrecedingSpace =    function() {      return true;    };
/*  Higher-order expressions that don't directly consume input.*/pexprs.Alt.prototype.allowsSkippingPrecedingSpace =  pexprs.Iter.prototype.allowsSkippingPrecedingSpace =  pexprs.Lex.prototype.allowsSkippingPrecedingSpace =  pexprs.Lookahead.prototype.allowsSkippingPrecedingSpace =  pexprs.Not.prototype.allowsSkippingPrecedingSpace =  pexprs.Param.prototype.allowsSkippingPrecedingSpace =  pexprs.Seq.prototype.allowsSkippingPrecedingSpace =    function() {      return false;    };