Module datafusion_expr::expr_visitor

Expression visitor

Enums

• Recursion
  Controls how the visitor recursion should proceed.

Traits

• ExprVisitable
  trait for types that can be visited by ExpressionVisitor
• ExpressionVisitor
  Implements the visitor pattern for recursively walking Exprs.

Functions

• inspect_expr_pre
  Recursively inspect an Expr and all its childen.