/// <summary>
/// Initializes a new instance of <see cref="DyadicFunction"/> AST node.
/// </summary>
/// <param name="token">The <see cref="Token"/> to use for the dyadic function.</param>
/// <param name="leftExpression">The left hand argument of the dyadic function.</param>
/// <param name="rightExpression">The right hand argument of the dyadic function.</param>
public DyadicFunction(Token token, Node leftExpression, Node rightExpression)
{
this.token = token;
this.leftExpression = leftExpression;
this.rightExpression = rightExpression;
MethodChooser.ConvertToDyadicToken(this.token);
}
private static DLR.Expression BuildDyadicCase(
Token functionToken,
DLR.LabelTarget returnTarget,
DLR.Expression environment,
DLR.Expression rightParam,
DLR.Expression leftParam)
{
DLR.Expression result;
MethodInfo method = typeof(AbstractDyadicFunction).GetMethod("Execute");
if (functionToken.Type == Tokens.TYPE)
{
result = DLR.Expression.IfThenElse(
// $left.IsNumber || ($left.Type == ATypes.ANull)
DLR.Expression.OrElse(
DLR.Expression.IsTrue(
DLR.Expression.PropertyOrField(leftParam, "IsNumber")
),
DLR.Expression.Equal(
DLR.Expression.PropertyOrField(leftParam, "Type"),
DLR.Expression.Constant(ATypes.ANull)
)
),
// Or($right, $left)
DLR.Expression.Goto(
returnTarget,
DLR.Expression.Call(
DLR.Expression.Constant(DyadicFunctionInstance.Or),
method,
rightParam, leftParam, environment
)
),
// Cast($right, $left)
DLR.Expression.Goto(
returnTarget,
DLR.Expression.Call(
DLR.Expression.Constant(DyadicFunctionInstance.Cast),
method,
rightParam, leftParam, environment
)
)
);
}
else
{
MethodChooser.ConvertToDyadicToken(functionToken);
AbstractDyadicFunction dyadic = MethodChooser.GetDyadicMethod(functionToken);
if (dyadic != null)
{
result =
DLR.Expression.Goto(
returnTarget,
DLR.Expression.Call(
DLR.Expression.Constant(dyadic),
method,
rightParam,
leftParam,
environment
)
);
}
else
{
result =
DLR.Expression.Throw(
DLR.Expression.New(
typeof(Error.Valence).GetConstructor(new Type[] { typeof(string) }),
DLR.Expression.Constant(functionToken.Text)
)
);
}
}
return(result);
}