根据上下文类型数据动态修改Resharper模板

Question

使用Resharper模板，我想根据上下文类型数据动态调整结果代码，这些数据可在完成模板时从静态分析中获得。

例如，如果我的模板参数之一是方法名称，则在输入方法名称并跳出替换项之后，我想评估方法的返回类型，并相应地调整模板的另一部分。类似于switch语句，其中每种情况都是一种类型，默认情况下会掉线。

这是我要实现的目标的（详细）示例：

/* template */
return _service.MakeCall(
    client => client.$methodName$(),
    returnValue => returnValue.$transformMethod$());


/* class being written with the assistance of the template */
class FooDataAccess
{
    ServiceHelper<FooServiceClient> _service;

    public Foo GetFoo(int id)
    {
        /* template usage, the type returned by GetFoo() does not result is any
        additional transformation */
        return _service.MakeCall(
            client => client.GetFoo(),
            returnValue => returnValue.ToDomain());
    }

    public IEnumerable<Foo> GetFoos()
    {
        /* template usage, $transformMethod$ is wrapped in a Select method since
        GetFoo() returns an IEnumerable */
        return _service.MakeCall(
            client => client.GetFoo(),
            returnValue => returnValue.Select(p => p.ToDomain()));
    }
}

/* supporting classes */
class ServiceHelper<TClient>
{
    public TOutput MakeCall<TResult, TOutput>(Func<TClient, TResult> call, Func<TResult, TOutput> transform)
    { ... }
}

class FooServiceClient
{
    public FooData GetFoo(int id)
    { /* make service call */ }

    public IEnumerable<FooData> GetFoos()
    { /* make service call */ }
}

static class FooExtensions
{
    public static Foo ToDomain(this FooData data)
    { /* hydrate domain from data */ }

    public static FooData ToData(this Foo domain)
    { /* hydrate data from domain */ }  
}