Trait join_impl::expr_chain::expr::ReplaceExpr

pub trait ReplaceExpr where
    Self: Sized, {
    fn replace_expr(&self, expr: Expr) -> Option<Self>;

    fn is_replaceable(&self) -> bool { ... }
}

Provides functionality to replacee inner Expr and return new Self with given Expr.

Required methods

fn replace_expr(&self, expr: Expr) -> Option<Self>

Replaces current expr by given Expr if it's possible, returning Some(new Self) with given Expr, otherwise returns None.

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Provided methods

fn is_replaceable(&self) -> bool

Can expr be replaced or not.

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Implementors

impl ReplaceExpr for DefaultExpr

fn replace_expr(&self, expr: Expr) -> Option<Self>

impl ReplaceExpr for ProcessExpr

fn replace_expr(&self, expr: Expr) -> Option<Self>

fn is_replaceable(&self) -> bool

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