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TokenEnum

Struct TokenEnum 

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

A Rust enum over one token attribute’s allowedTokens.

Generation is opt-in and explicit, because a token set is not an identity: two properties can admit the same tokens and mean different things, and two properties meaning the same thing can declare different fallbacks. So the enum is named here and sourced from the one property that defines it. Nothing else is associated with it — a property admitting the same tokens is free to use it or not, and the generated accessors are unchanged either way.

use openusd_build::TokenEnum;

openusd_build::configure()
    .schema("schemas/usdGeom/schema.usda")
    .token_enum(TokenEnum::new("Purpose", "usdGeom", "Imageable.purpose").with_default())
    .generate()?;

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impl TokenEnum

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pub fn new( name: impl Into<String>, library: impl Into<String>, source: impl Into<String>, ) -> Self

An enum called name over the allowedTokens of source, a property of library named Class.property.

Class is the schema’s registered identifier, as the class prim spells it, not the Rust name its className may ask for.

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pub fn with_default(self) -> Self

Derives Default from the source property’s fallback.

Off unless asked for: a token set carries no default of its own, and the corpus shows why — guideVisibility falls back to invisible where proxyVisibility and renderVisibility fall back to inherited, all three admitting the same tokens. So the default is the source property’s, said explicitly, and a source with no token fallback is an error rather than a guess.

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pub fn variant( self, token: impl Into<String>, variant: impl Into<String>, ) -> Self

Spells the variant for token rather than casing it.

For a token Rust has no name for — an empty spelling, one opening with a digit — and for two tokens that would otherwise reach one name. Naming a token the source property does not admit is an error, so an override cannot quietly do nothing.

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impl Clone for TokenEnum

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for TokenEnum

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

Formats the value using the given formatter. 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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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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, 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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

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

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.