Enum FilterExpr

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#[non_exhaustive]
pub enum FilterExpr { Unary(UnOp, Box<FilterExpr>), Binary(Box<FilterExpr>, BinOp, Box<FilterExpr>), Path(SubPath), Lit(ExprLit), Parens(Paren, Box<FilterExpr>), }
Expand description

An expression inside a filter directive, or any sub-expression in that tree

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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Unary(UnOp, Box<FilterExpr>)

An expression with an unary operator before it, such as !(true)

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Binary(Box<FilterExpr>, BinOp, Box<FilterExpr>)

Two expressions with a binary operator joining them, such as 1 + 4

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Path(SubPath)

A SubPath expression, such as the @.a in @.a == 1

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Lit(ExprLit)

A literal value, such as null or 'bar'

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Parens(Paren, Box<FilterExpr>)

An expression wrapped in parenthesis, such as the (1 + 2) in (1 + 2) * 3

Trait Implementations§

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impl Spanned for FilterExpr

Available on crate feature spanned only.
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fn span(&self) -> Span

Get the source span of this item

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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> Chain<T> for T

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fn len(&self) -> usize

The number of items that this chain link consists of.
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fn append_to(self, v: &mut Vec<T>)

Append the elements in this link to the chain.
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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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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.