public override Task <string> Visit(NodeExprBinary e, CancellationToken t)
{
return(Task.Run
(
() =>
{
var lt = Visit(e.Left, t);
var rt = Visit(e.Right, t);
Task.WaitAll(new[] { lt, rt }, t);
t.ThrowIfCancellationRequested();
var l = lt.Result;
var r = rt.Result;
var lp = e.Left.Priority > e.Priority;
var rp = e.Priority < e.Right.Priority;
if (e.IsNecesaryParenthesisLeft)
{
l = $"({l})";
}
if (e.IsNecesaryParenthesisRight)
{
r = $"({r})";
}
return (e.TypeBinary == ETypeBinary.Mult && !(e.Left.TypeExpr == ENodeTypeExpr.Constant && e.Right.TypeExpr == ENodeTypeExpr.Constant)) ? l + r : l + MathExpr.TypeBinariesStr[e.TypeBinary] + r;
}
));
}
public override Task <NodeExpr> Visit(NodeExprBinary e, CancellationToken t)
{
return(Task.Run
(
() =>
{
var lt = Visit(e.Left, t);
var rt = Visit(e.Right, t);
Task.WaitAll(new[] { lt, rt }, t);
t.ThrowIfCancellationRequested();
var l = lt.Result;
var r = rt.Result;
return
((l is NodeExprNumber <N> ln) && (r is NodeExprNumber <N> rn))
? (NodeExpr)NodeExpr.Number(mAlg.EvalBinaryOperator(e.TypeBinary, ln.Value, rn.Value))
: NodeExpr.Binary(e.TypeBinary, l, r);
}
));
}
public override Task <NodeExpr> Visit(NodeExprBinary e, CancellationToken t) => Task.FromResult <NodeExpr>(e);
public virtual Task <T> Visit(NodeExprBinary e, CancellationToken t) => Task.FromResult(default(T));
public virtual T Visit(NodeExprBinary e) => default(T);
public NodeExprBinary(NodeExprBinary e) : this(e.TypeBinary, e.Left, e.Right)
{
}