/// <summary>
/// Creates a matching for the specified kind of binary operation.
/// </summary>
/// <param name="kind">kind of binary operation to match</param>
public static Expression.MatchFunction BinOp(BinOp.Kind kind)
{
return(Node(new BinOp()
{
Operation = kind
}));
}
/// <summary>
/// Constructs a generator for binary expressions.
/// </summary>
/// <param name="kind">kind of binary expression to construct</param>
/// <param name="g1">left operand generator</param>
/// <param name="g2">right operand generator</param>
public static ExpressionGenerator BinOp(BinOp.Kind kind,
ExpressionGenerator g1, ExpressionGenerator g2)
{
return(() => new BinOp()
{
Operation = kind,
Operand1 = g1(),
Operand2 = g2()
});
}
/// <summary>
/// Returns <c>true</c> if the expression is a binary operation.
/// </summary>
public static bool IsBinOp(this Expression e, BinOp.Kind op)
{
BinOp bop = e as BinOp;
if (bop == null)
{
return(false);
}
return(bop.Operation == op);
}
/// <summary>
/// Creates a matching for the specified kind of binary operation.
/// </summary>
/// <param name="kind">kind of binary operation to match</param>
/// <param name="peer">right child matching</param>
public Matching MBinOp(BinOp.Kind kind, Matching peer)
{
BinOp cmp = new BinOp()
{
Operation = kind
};
Matching newm = new Matching();
newm._func = e => e.NodeEquals(cmp) &&
this.Match(e.Children.ElementAt(0)) &&
peer.Match(e.Children.ElementAt(1));
newm._gen = () => newm._expr == null ?
new BinOp()
{
Operation = kind, Operand1 = _gen(), Operand2 = peer._gen()
} : newm._expr;
return(newm);
}
/// <summary>
/// Creates the attribute.
/// </summary>
/// <param name="kind">kind of binary operation</param>
public MapToBinOp(BinOp.Kind kind)
{
Kind = kind;
}