Trait join_impl::expr_chain::expr::ExtractExpr

pub trait ExtractExpr {
    type InnerExpr;
    fn extract_expr(&self) -> &Expr;
    fn extract_inner_expr(&self) -> &Self::InnerExpr;
}

Trait which allows to extract Expr and InnerExpr (which can be any superset of Expr).

Associated Types

type InnerExpr

Defines superset of Expr used by given struct.

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Required methods

fn extract_expr(&self) -> &Expr

Extracts Expr from given value.

fn extract_inner_expr(&self) -> &Self::InnerExpr

Extracts InnerExpr. If InnerExpr is Expr, acts as extract_expr.

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Implementors

impl ExtractExpr for DefaultExpr

type InnerExpr = Expr

fn extract_expr(&self) -> &Expr

fn extract_inner_expr(&self) -> &Self::InnerExpr

impl ExtractExpr for ProcessExpr

type InnerExpr = Expr

fn extract_expr(&self) -> &Expr

fn extract_inner_expr(&self) -> &Self::InnerExpr

impl ExtractExpr for DefaultActionExpr

type InnerExpr = DefaultExpr

fn extract_expr(&self) -> &Expr

fn extract_inner_expr(&self) -> &Self::InnerExpr

impl ExtractExpr for ProcessActionExpr

type InnerExpr = ProcessExpr

fn extract_expr(&self) -> &Expr

fn extract_inner_expr(&self) -> &Self::InnerExpr

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