Enum rustdb::expr::ExprIs

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#[non_exhaustive]
pub enum ExprIs { Const(Value), Local(usize), ColName(String), Binary(Token, Box<Expr>, Box<Expr>), Not(Box<Expr>), Minus(Box<Expr>), Case(Vec<(Expr, Expr)>, Box<Expr>), FuncCall(ObjRef, Vec<Expr>), BuiltinCall(String, Vec<Expr>), ScalarSelect(Box<FromExpression>), List(Vec<Expr>), }
Expand description

Scalar Expression variants.

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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Const(Value)

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Local(usize)

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ColName(String)

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Binary(Token, Box<Expr>, Box<Expr>)

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Not(Box<Expr>)

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Minus(Box<Expr>)

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Case(Vec<(Expr, Expr)>, Box<Expr>)

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FuncCall(ObjRef, Vec<Expr>)

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BuiltinCall(String, Vec<Expr>)

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ScalarSelect(Box<FromExpression>)

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List(Vec<Expr>)

Auto Trait Implementations§

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impl !RefUnwindSafe for ExprIs

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impl !Send for ExprIs

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impl !Sync for ExprIs

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impl Unpin for ExprIs

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impl !UnwindSafe for ExprIs

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> 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, 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.