public static LambdaExpression ReplaceParameter(Type acceptsType, LambdaExpression expression,
ParameterExpression newParam)
{
var before = expression.Parameters.FirstOrDefault(x => x.Type == acceptsType) ?? expression.Parameters.FirstOrDefault(x => x.Type.CanBeCastTo(acceptsType));
if (before == null)
{
return(expression);
}
var rewriter = new ParameterRewriter(before, newParam);
return(rewriter.VisitAndConvert(expression, "Activator"));
}
public static LambdaExpression ReplaceParameter(this LambdaExpression expression, Type acceptsType,
ParameterExpression newParam)
{
return(ParameterRewriter.ReplaceParameter(acceptsType, expression, newParam));
}
