pub struct DynamicEnum { /* private fields */ }
Expand description

A dynamic representation of an enum.

This allows for enums to be configured at runtime.

Example


// The original enum value
let mut value: Option<usize> = Some(123);

// Create a DynamicEnum to represent the new value
let mut dyn_enum = DynamicEnum::new(
  "None",
  DynamicVariant::Unit
);

// Apply the DynamicEnum as a patch to the original value
value.apply(&dyn_enum);

// Tada!
assert_eq!(None, value);

Implementations§

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impl DynamicEnum

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pub fn new<I: Into<String>, V: Into<DynamicVariant>>( variant_name: I, variant: V ) -> Self

Create a new DynamicEnum to represent an enum at runtime.

Arguments
  • variant_name: The name of the variant to set
  • variant: The variant data
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pub fn new_with_index<I: Into<String>, V: Into<DynamicVariant>>( variant_index: usize, variant_name: I, variant: V ) -> Self

Create a new DynamicEnum with a variant index to represent an enum at runtime.

Arguments
  • variant_index: The index of the variant to set
  • variant_name: The name of the variant to set
  • variant: The variant data
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pub fn set_represented_type( &mut self, represented_type: Option<&'static TypeInfo> )

Sets the type to be represented by this DynamicEnum.

Panics

Panics if the given type is not a TypeInfo::Enum.

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pub fn set_variant<I: Into<String>, V: Into<DynamicVariant>>( &mut self, name: I, variant: V )

Set the current enum variant represented by this struct.

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pub fn set_variant_with_index<I: Into<String>, V: Into<DynamicVariant>>( &mut self, variant_index: usize, variant_name: I, variant: V )

Set the current enum variant represented by this struct along with its variant index.

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pub fn from<TEnum: Enum>(value: TEnum) -> Self

Create a DynamicEnum from an existing one.

This is functionally the same as DynamicEnum::from_ref except it takes an owned value.

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pub fn from_ref<TEnum: Enum>(value: &TEnum) -> Self

Create a DynamicEnum from an existing one.

This is functionally the same as DynamicEnum::from except it takes a reference.

Trait Implementations§

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impl Debug for DynamicEnum

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for DynamicEnum

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fn default() -> DynamicEnum

Returns the “default value” for a type. Read more
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impl Enum for DynamicEnum

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fn field(&self, name: &str) -> Option<&dyn Reflect>

Returns a reference to the value of the field (in the current variant) with the given name. Read more
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fn field_at(&self, index: usize) -> Option<&dyn Reflect>

Returns a reference to the value of the field (in the current variant) at the given index.
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fn field_mut(&mut self, name: &str) -> Option<&mut dyn Reflect>

Returns a mutable reference to the value of the field (in the current variant) with the given name. Read more
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fn field_at_mut(&mut self, index: usize) -> Option<&mut dyn Reflect>

Returns a mutable reference to the value of the field (in the current variant) at the given index.
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fn index_of(&self, name: &str) -> Option<usize>

Returns the index of the field (in the current variant) with the given name. Read more
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fn name_at(&self, index: usize) -> Option<&str>

Returns the name of the field (in the current variant) with the given index. Read more
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fn iter_fields(&self) -> VariantFieldIter<'_>

Returns an iterator over the values of the current variant’s fields.
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fn field_len(&self) -> usize

Returns the number of fields in the current variant.
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fn variant_name(&self) -> &str

The name of the current variant.
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fn variant_index(&self) -> usize

The index of the current variant.
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fn variant_type(&self) -> VariantType

The type of the current variant.
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fn clone_dynamic(&self) -> DynamicEnum

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fn is_variant(&self, variant_type: VariantType) -> bool

Returns true if the current variant’s type matches the given one.
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fn variant_path(&self) -> String

Returns the full path to the current variant.
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impl Reflect for DynamicEnum

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fn get_represented_type_info(&self) -> Option<&'static TypeInfo>

Returns the TypeInfo of the type represented by this value. Read more
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fn into_any(self: Box<Self>) -> Box<dyn Any>

Returns the value as a Box<dyn Any>.
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fn as_any(&self) -> &dyn Any

Returns the value as a &dyn Any.
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fn as_any_mut(&mut self) -> &mut dyn Any

Returns the value as a &mut dyn Any.
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fn into_reflect(self: Box<Self>) -> Box<dyn Reflect>

Casts this type to a boxed reflected value.
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fn as_reflect(&self) -> &dyn Reflect

Casts this type to a reflected value.
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fn as_reflect_mut(&mut self) -> &mut dyn Reflect

Casts this type to a mutable reflected value.
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fn apply(&mut self, value: &dyn Reflect)

Applies a reflected value to this value. Read more
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fn set(&mut self, value: Box<dyn Reflect>) -> Result<(), Box<dyn Reflect>>

Performs a type-checked assignment of a reflected value to this value. Read more
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fn reflect_kind(&self) -> ReflectKind

Returns a zero-sized enumeration of “kinds” of type. Read more
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fn reflect_ref(&self) -> ReflectRef<'_>

Returns an immutable enumeration of “kinds” of type. Read more
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fn reflect_mut(&mut self) -> ReflectMut<'_>

Returns a mutable enumeration of “kinds” of type. Read more
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fn reflect_owned(self: Box<Self>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type. Read more
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fn clone_value(&self) -> Box<dyn Reflect>

Clones the value as a Reflect trait object. Read more
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fn reflect_hash(&self) -> Option<u64>

Returns a hash of the value (which includes the type). Read more
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fn reflect_partial_eq(&self, value: &dyn Reflect) -> Option<bool>

Returns a “partial equality” comparison result. Read more
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fn debug(&self, f: &mut Formatter<'_>) -> Result

Debug formatter for the value. Read more
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fn serializable(&self) -> Option<Serializable<'_>>

Returns a serializable version of the value. Read more
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fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type. Read more
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impl TypePath for DynamicEnum
where Self: Any + Send + Sync,

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fn type_path() -> &'static str

Returns the fully qualified path of the underlying type. Read more
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fn short_type_path() -> &'static str

Returns a short, pretty-print enabled path to the type. Read more
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fn type_ident() -> Option<&'static str>

Returns the name of the type, or None if it is anonymous. Read more
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fn crate_name() -> Option<&'static str>

Returns the name of the crate the type is in, or None if it is anonymous. Read more
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fn module_path() -> Option<&'static str>

Returns the path to the module the type is in, or None if it is anonymous. Read more

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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impl<T> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Send + Sync>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.
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impl<T> DynamicTypePath for T
where T: TypePath,

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> GetPath for T
where T: Reflect + ?Sized,

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fn reflect_path<'p>( &self, path: impl ReflectPath<'p> ) -> Result<&dyn Reflect, ReflectPathError<'p>>

Returns a reference to the value specified by path. Read more
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fn reflect_path_mut<'p>( &mut self, path: impl ReflectPath<'p> ) -> Result<&mut dyn Reflect, ReflectPathError<'p>>

Returns a mutable reference to the value specified by path. Read more
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fn path<'p, T: Reflect>( &self, path: impl ReflectPath<'p> ) -> Result<&T, ReflectPathError<'p>>

Returns a statically typed reference to the value specified by path. Read more
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fn path_mut<'p, T: Reflect>( &mut self, path: impl ReflectPath<'p> ) -> Result<&mut T, ReflectPathError<'p>>

Returns a statically typed mutable reference to the value specified by path. Read more
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more