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Role

Enum Role 

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pub enum Role {
    Decl {
        starts: Starts,
        parse: fn(&mut Parser<'_, '_, '_>) -> PResult<DeclKind>,
    },
    Stmt {
        parse: fn(&mut Parser<'_, '_, '_>) -> PResult<Stmt>,
    },
    Prefix {
        starts: Starts,
        parse: fn(&mut Parser<'_, '_, '_>) -> PResult<Expr>,
    },
    Infix {
        level: Level,
        parse: fn(&mut Parser<'_, '_, '_>, Expr) -> PResult<Expr>,
    },
    Modifier(Modifier),
    BuiltinType,
    PatchItem {
        parse: fn(&mut Parser<'_, '_, '_>) -> PResult<PatchItem>,
    },
    Point {
        parse: fn(&mut Parser<'_, '_, '_>) -> PResult<Point>,
    },
    Part,
}
Expand description

What a word does where the parser meets it.

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Decl

Starts a declaration.

Fields

§starts: Starts
§parse: fn(&mut Parser<'_, '_, '_>) -> PResult<DeclKind>
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Stmt

Starts a statement.

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§parse: fn(&mut Parser<'_, '_, '_>) -> PResult<Stmt>
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Prefix

Starts an expression (a literal, a prefix, new).

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§starts: Starts
§parse: fn(&mut Parser<'_, '_, '_>) -> PResult<Expr>
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Infix

Joins the expression before it with what follows.

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§level: Level
§parse: fn(&mut Parser<'_, '_, '_>, Expr) -> PResult<Expr>
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Modifier(Modifier)

Marks the declaration after it.

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BuiltinType

A built-in type (i32, string, void).

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PatchItem

Starts an item of a patch (before, add, …).

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§parse: fn(&mut Parser<'_, '_, '_>) -> PResult<PatchItem>
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Point

Starts a point inside a patched method (around, at, …).

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§parse: fn(&mut Parser<'_, '_, '_>) -> PResult<Point>
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Part

Only part of another word’s form (else, was, when).

Trait Implementations§

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impl Clone for Role

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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 Copy for Role

Auto Trait Implementations§

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impl Freeze for Role

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impl RefUnwindSafe for Role

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impl Send for Role

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impl Sync for Role

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impl Unpin for Role

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impl UnsafeUnpin for Role

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impl UnwindSafe for Role

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> Arg<T> for T

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fn arg(self) -> T

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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.