pub struct LookupCtx<'a> {
    pub property_name: Option<&'a str>,
    pub property_type: Type,
    pub component_scope: &'a [ElementRc],
    pub diag: &'a mut BuildDiagnostics,
    pub arguments: Vec<String>,
    pub type_register: &'a TypeRegister,
    pub type_loader: Option<&'a TypeLoader>,
    pub current_token: Option<NodeOrToken>,
}
Expand description

Contains information which allow to lookup identifier in expressions

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§property_name: Option<&'a str>

the name of the property for which this expression refers.

§property_type: Type

the type of the property for which this expression refers. (some property come in the scope)

§component_scope: &'a [ElementRc]

Here is the stack in which id applies. (the last element in the scope is looked up first)

§diag: &'a mut BuildDiagnostics

Somewhere to report diagnostics

§arguments: Vec<String>

The name of the arguments of the callback or function

§type_register: &'a TypeRegister

The type register in which to look for Globals

§type_loader: Option<&'a TypeLoader>

The type loader instance, which may be used to resolve relative path references for example for img!

§current_token: Option<NodeOrToken>

The token currently processed

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impl<'a> LookupCtx<'a>

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pub fn empty_context( type_register: &'a TypeRegister, diag: &'a mut BuildDiagnostics ) -> Self

Return a context that is just suitable to build simple const expression

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pub fn return_type(&self) -> &Type

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pub fn is_legacy_component(&self) -> bool

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pub fn is_local_element(&self, elem: &ElementRc) -> bool

True if the element is in the same component as the scope

Auto Trait Implementations§

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impl<'a> !RefUnwindSafe for LookupCtx<'a>

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impl<'a> !Send for LookupCtx<'a>

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impl<'a> !Sync for LookupCtx<'a>

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impl<'a> Unpin for LookupCtx<'a>

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impl<'a> !UnwindSafe for LookupCtx<'a>

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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> 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 Twhere 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 Twhere 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 Twhere 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.