grammars/grammar_pithy.js
function guardedSeq() { 
            var args = Array.prototype.slice.call(arguments, 1).map(function(r) { return m.seq(m.assert(r), _this.ws); });
            return m.seq(arguments[0], _this.ws, m.seq.apply(m, args)); 
        }
function guardedSeq() { 
            var args = Array.prototype.slice.call(arguments, 1).map(function(r) { return m.seq(m.assert(r), _this.ws); });
            return m.seq(arguments[0], _this.ws, m.seq.apply(m, args)); 
        }
function guardedSeq ( ) { var args = Array . prototype . slice . call ( arguments , 1 ) . map ( function ( r ) { return m . seq ( m . assert ( r ) , _this . ws ) ; } ) ; return m . seq ( arguments [ 0 ] , _this . ws , m . seq . apply ( m , args ) ) ; }
If the first rule argument passes, all subsequent rules must pass or an assert will throw
If the first rule argument passes all subsequent rules must pass or an assert will throw