WIP: Add Default where there is no explicit default #184
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| self.uses_uuid = true; | ||
| Ok((TypeEntry::new_builtin("uuid::Uuid", &["Display"]), metadata)) | ||
| Ok(( | ||
| TypeEntry::new_builtin("uuid::Uuid", &["Default", "Display"]), |
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The default Uuid does not seem useful
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as noted in the commit 5fabb9b (#184), I am unsure about all of these
| TypeEntry::new_builtin("chrono::Date<chrono::offset::Utc>", &["Display"]), | ||
| TypeEntry::new_builtin( | ||
| "chrono::Date<chrono::offset::Utc>", | ||
| &["Default", "Display"], |
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| Some("ip") => Ok(( | ||
| TypeEntry::new_builtin("std::net::IpAddr", &["Display"]), | ||
| TypeEntry::new_builtin("std::net::IpAddr", &["Default", "Display"]), |
| educe :: Educe, | ||
| )] | ||
| #[educe(Default)] | ||
| pub enum StringEnum { |
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why would this have a default
| pub struct ExprString(pub String); | ||
| impl std::ops::Deref for ExprString { | ||
| type Target = String; | ||
| fn deref(&self) -> &String { | ||
| &self.0 | ||
| } | ||
| } | ||
| #[derive(Clone, Debug, Deserialize, Serialize)] | ||
| #[derive(Clone, Debug, Default, Deserialize, Serialize)] | ||
| #[serde(deny_unknown_fields)] | ||
| pub struct ExtentTransform { |
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Just for example:, but this type clearly doesn't have a default value in the json spec.
| #[derive(Clone, Debug, Deserialize, Serialize, educe :: Educe)] | ||
| #[educe(Default)] | ||
| #[serde(untagged)] | ||
| pub enum IdOrName { |
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why would this type have a default? I don't get it.
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The proposal in #181 is a great idea; this implementation seems pretty divergent from that idea. |
This implementation does solve #181, and attempts to fulfill a basic expectation that data structures in Rust should provide a I am required to add this for my HTTP data structures, because another library demands it. It also seems quite feasible to do, hence this WIP, where only one datatype has no |
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I think this has been obviated by #725. Please feel free to re-open or file an issue if not. |
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Closes #181
There is still one error with progenitor tests (
build_nexus), naming that https://doc.rust-lang.org/std/net/struct.Ipv4Addr.html and friends do not implementDefault, so any struct which uses them will fail to deriveDefault. magiclen/educe#6 shows how this can already be fixed witheduce, and also how an enhancement toeducemight be able to make the implementation here less complicated.This also highlights there are no tests here using
format: ipv4in such a similar way to progenitor'snexus.json, that should causes failures here.