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Value

Enum Value 

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#[non_exhaustive]
pub enum Value {
Show 13 variants String(String), Bool(bool), Int(i32), Hex(u32), Float(f32), Dimension(Dimension), Fraction(Fraction), Color(Color), Reference(ResourceRef), Attribute(ResourceRef), Null, Empty, Raw { data_type: u8, data: u32, },
}
Expand description

A resource or attribute value.

References may be symbolic (ResourceRef::Named) while building; they are resolved to IDs when encoded. Decoded values always carry IDs.

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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String(String)

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Bool(bool)

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Int(i32)

A decimal integer (TYPE_INT_DEC); also used for enum attributes.

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Hex(u32)

A hexadecimal integer (TYPE_INT_HEX); also used for flag attributes.

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Float(f32)

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Dimension(Dimension)

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Fraction(Fraction)

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Color(Color)

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Reference(ResourceRef)

@type/name: the value of another resource.

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Attribute(ResourceRef)

?type/name: the value of a theme attribute.

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Null

@null: no resource, which clears an attribute (a reference to ID 0).

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Empty

@empty: an explicitly empty value.

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Raw

A value type this crate does not interpret, kept verbatim.

Fields

§data_type: u8
§data: u32

Implementations§

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impl Value

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pub fn as_str(&self) -> Option<&str>

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pub fn as_int(&self) -> Option<i64>

The integer content of Int, Hex, or Bool values.

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pub fn as_bool(&self) -> Option<bool>

Trait Implementations§

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impl Clone for Value

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

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

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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 Display for Value

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

Formats the value using Android XML notation.

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impl From<&str> for Value

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fn from(s: &str) -> Self

Converts to this type from the input type.
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impl From<Color> for Value

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fn from(c: Color) -> Self

Converts to this type from the input type.
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impl From<Dimension> for Value

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fn from(d: Dimension) -> Self

Converts to this type from the input type.
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impl From<Fraction> for Value

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fn from(f: Fraction) -> Self

Converts to this type from the input type.
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impl From<ResourceRef> for Value

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fn from(r: ResourceRef) -> Self

Converts to this type from the input type.
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impl From<String> for Value

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fn from(s: String) -> Self

Converts to this type from the input type.
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impl From<bool> for Value

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fn from(b: bool) -> Self

Converts to this type from the input type.
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impl From<i32> for Value

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fn from(i: i32) -> Self

Converts to this type from the input type.
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impl PartialEq for Value

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fn eq(&self, other: &Self) -> bool

Equality operator ==. Read more
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fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl StructuralPartialEq for Value

Auto Trait Implementations§

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impl Freeze for Value

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impl RefUnwindSafe for Value

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impl Send for Value

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impl Sync for Value

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impl Unpin for Value

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impl UnsafeUnpin for Value

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impl UnwindSafe for Value

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<'a, T, E> AsTaggedExplicit<'a, E> for T
where T: 'a,

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fn explicit(self, class: Class, tag: u32) -> TaggedParser<'a, Explicit, Self, E>

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impl<'a, T, E> AsTaggedImplicit<'a, E> for T
where T: 'a,

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fn implicit( self, class: Class, constructed: bool, tag: u32, ) -> TaggedParser<'a, Implicit, Self, E>

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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> CustomError for T
where T: Display + Debug + Send + Sync + 'static,

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fn as_any(&self) -> &(dyn Any + Send + Sync + 'static)

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fn as_any_mut(&mut self) -> &mut (dyn Any + Send + Sync + 'static)

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fn as_box_any(self: Box<T>) -> Box<dyn Any + Send + Sync>

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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> Same for T

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type Output = T

Should always be Self
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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> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. 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.