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PureStmt

Enum PureStmt 

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pub enum PureStmt {
    Local {
        pattern: PurePattern,
        ty: Option<PureType>,
        init: Option<PureExpr>,
        else_branch: Option<Box<PureExpr>>,
    },
    Semi(PureExpr),
    Expr(PureExpr),
    Item(Box<PureItem>),
    Verbatim(String),
}
Expand description

A statement.

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Local

Local variable: let x = 1; or let Some(x) = opt else { ... }; (let-else).

Fields

§pattern: PurePattern

Binding pattern (LHS of let).

§ty: Option<PureType>

Optional explicit type annotation.

§init: Option<PureExpr>

Optional initializer expression.

§else_branch: Option<Box<PureExpr>>

Optional diverging else-block for let-else (else { <block> }).

Corresponds to syn::LocalInit::diverge. Must be present when the pattern is refutable; losing this field causes E0005 at compile time.

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Semi(PureExpr)

Expression with semicolon.

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Expr(PureExpr)

Expression without semicolon (tail expression).

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Item(Box<PureItem>)

Item statement (function inside function, etc.).

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Verbatim(String)

Verbatim raw bytes that must survive PureFile::to_source exactly as authored. Same staging mechanism as PureExpr::Verbatim but at the statement level: lowered to a unique sentinel __ryo_verbatim_stmt_<N>; expression-statement stub, then the post-prettyplease splice step replaces the entire line containing that identifier with the raw bytes (matching the item-level splice semantics, because a Stmt occupies its own line in prettyplease output). Used for raw let x = ...;, macro invocation stmts (tracing::info!(...);), and other shapes where the entire stmt — not just the contained expr — must carry user trivia (B-3-cont).

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impl PureStmt

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pub fn get_expr(&self) -> Option<&PureExpr>

Get the expression contained in this statement.

Returns Some for Local (init expr), Semi, and Expr variants. Returns None for Item or if Local has no initializer.

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pub fn get_expr_mut(&mut self) -> Option<&mut PureExpr>

Get mutable expression contained in this statement.

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pub fn has_expr(&self) -> bool

Check if this statement contains an expression.

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impl Clone for PureStmt

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fn clone(&self) -> PureStmt

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 Debug for PureStmt

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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 Eq for PureStmt

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impl PartialEq for PureStmt

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl StructuralPartialEq for PureStmt

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impl ToSyn for PureStmt

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type Output = Stmt

syn output type produced from self.
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fn to_syn(&self) -> Result<Stmt, ToSynError>

Convert self back into its syn representation.

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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> 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 = 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.