private Expr EvaluateBinaryExpression(BinaryExprNode node)
{
Expr left = this.Visit(node.LeftOperand);
Expr right = this.Visit(node.RightOperand);
return(this.TryEvaluate(node, $"{left} {node.Operator.Symbol} {right}"));
}
public SymConst Visit(BinaryExprNode node)
{
var left = node.Left.Accept(this);
var right = node.Right.Accept(this);
switch (node.Operation)
{
case OperatorToken op:
switch (op.Value)
{
case Constants.Operators.Plus:
return(EvalPlus(left, right));
case Constants.Operators.Minus:
return(EvalMinus(left, right));
case Constants.Operators.Multiply:
return(EvalMultiply(left, right));
case Constants.Operators.Divide:
return(EvalDivide(left, right));
}
break;
}
throw EvalException();
}
public override string Visit(BinaryExprNode node)
{
var left = Visit(node.Left);
var right = Visit(node.Right);
var op = node.Id;
return($"({left} {op} {right})");
}
