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33 lines
1.1 KiB
33 lines
1.1 KiB
//! Message values
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use super::*;
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use std::any::Any;
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use serde::de::DeserializeOwned;
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pub struct MessageValueAnyRef<'a>(&'a (dyn Any +'static));
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pub struct MessageValueAnyMut<'a>(&'a mut (dyn Any +'static));
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pub struct MessageValueAny(Box<dyn Any +'static>);
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/// A value that can be used for messages.
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pub trait MessageValue: Serialize + for<'de> Deserialize<'de>
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{
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fn as_dynamic(&self) -> Option<MessageValueAnyRef<'_>> { None }
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fn as_dynamic_mut(&mut self) -> Option<MessageValueAnyMut<'_>> { None }
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fn into_dynamic(self) -> Result<MessageValueAny, Self> { Err(self) }
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}
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default impl<T: ?Sized> MessageValue for T
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where T: Serialize + for<'de> Deserialize<'de>
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{
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default fn as_dynamic(&self) -> Option<MessageValueAnyRef<'_>> { None }
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default fn as_dynamic_mut(&mut self) -> Option<MessageValueAnyMut<'_>> { None }
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default fn into_dynamic(self) -> Result<MessageValueAny, Self> { Err(self) }
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}
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#[derive(Debug, Serialize, Deserialize)]
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pub struct DynamicMessageValue<T>(T)
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where T: Any + 'static;
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//impl<T> MessageValue for DynamicMessageValue<T>
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//where T: Serialize + for<'de> Deserialize<'de> + Any{}
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