Readme for "bound" attribute

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David Tolnay 2016-06-05 11:54:36 -07:00
parent 2e06786262
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@ -688,12 +688,15 @@ how types are serialized. Here are the supported annotations:
Container Annotations: Container Annotations:
| Annotation | Function | | Annotation | Function |
| ---------- | -------- | | ---------- | -------- |
| `#[serde(rename="name")]` | Serialize and deserialize this container with the given name | | `#[serde(rename="name")]` | Serialize and deserialize this container with the given name |
| `#[serde(rename(serialize="name1"))]` | Serialize this container with the given name | | `#[serde(rename(serialize="name1"))]` | Serialize this container with the given name |
| `#[serde(rename(deserialize="name1"))]` | Deserialize this container with the given name | | `#[serde(rename(deserialize="name1"))]` | Deserialize this container with the given name |
| `#[serde(deny_unknown_fields)]` | Always error during serialization when encountering unknown fields. When absent, unknown fields are ignored for self-describing formats like JSON. | | `#[serde(deny_unknown_fields)]` | Always error during serialization when encountering unknown fields. When absent, unknown fields are ignored for self-describing formats like JSON. |
| `#[serde(bound="T: MyTrait")]` | Where-clause for the Serialize and Deserialize impls. This replaces any bounds inferred by Serde. |
| `#[serde(bound(serialize="T: MyTrait"))]` | Where-clause for the Serialize impl. |
| `#[serde(bound(deserialize="T: MyTrait"))]` | Where-clause for the Deserialize impl. |
Variant Annotations: Variant Annotations:
@ -705,18 +708,21 @@ Variant Annotations:
Field Annotations: Field Annotations:
| Annotation | Function | | Annotation | Function |
| ---------- | -------- | | ---------- | -------- |
| `#[serde(rename="name")]` | Serialize and deserialize this field with the given name | | `#[serde(rename="name")]` | Serialize and deserialize this field with the given name |
| `#[serde(rename(serialize="name1"))]` | Serialize this field with the given name | | `#[serde(rename(serialize="name1"))]` | Serialize this field with the given name |
| `#[serde(rename(deserialize="name1"))]` | Deserialize this field with the given name | | `#[serde(rename(deserialize="name1"))]` | Deserialize this field with the given name |
| `#[serde(default)]` | If the value is not specified, use the `Default::default()` | | `#[serde(default)]` | If the value is not specified, use the `Default::default()` |
| `#[serde(default="$path")]` | Call the path to a function `fn() -> T` to build the value | | `#[serde(default="$path")]` | Call the path to a function `fn() -> T` to build the value |
| `#[serde(skip_serializing)]` | Do not serialize this value | | `#[serde(skip_serializing)]` | Do not serialize this value |
| `#[serde(skip_deserializing)]` | Always use `Default::default()` or `#[serde(default="$path")]` instead of deserializing this value | | `#[serde(skip_deserializing)]` | Always use `Default::default()` or `#[serde(default="$path")]` instead of deserializing this value |
| `#[serde(skip_serializing_if="$path")]` | Do not serialize this value if this function `fn(&T) -> bool` returns `true` | | `#[serde(skip_serializing_if="$path")]` | Do not serialize this value if this function `fn(&T) -> bool` returns `true` |
| `#[serde(serialize_with="$path")]` | Call a function `fn<S>(&T, &mut S) -> Result<(), S::Error> where S: Serializer` to serialize this value of type `T` | | `#[serde(serialize_with="$path")]` | Call a function `fn<S>(&T, &mut S) -> Result<(), S::Error> where S: Serializer` to serialize this value of type `T` |
| `#[serde(deserialize_with="$path")]` | Call a function `fn<D>(&mut D) -> Result<T, D::Error> where D: Deserializer` to deserialize this value of type `T` | | `#[serde(deserialize_with="$path")]` | Call a function `fn<D>(&mut D) -> Result<T, D::Error> where D: Deserializer` to deserialize this value of type `T` |
| `#[serde(bound="T: MyTrait")]` | Where-clause for the Serialize and Deserialize impls. This replaces any bounds inferred by Serde for the current field. |
| `#[serde(bound(serialize="T: MyTrait"))]` | Where-clause for the Serialize impl. |
| `#[serde(bound(deserialize="T: MyTrait"))]` | Where-clause for the Deserialize impl. |
Using in `no_std` crates Using in `no_std` crates
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