Function WalkExprConst

pkg/sql/sem/tree/walk.go:692–698

WalkExprConst is a variant of WalkExpr for visitors that do not modify the expression.

(v Visitor, expr Expr)

// WalkExprConst is a variant of WalkExpr for visitors that do not modify the expression.
func WalkExprConst(v Visitor, expr Expr) {
	WalkExpr(v, expr)
	// TODO(radu): we should verify that WalkExpr returns changed == false. Unfortunately that
	// is not the case today because walking through non-pointer implementations of Expr (like
	// DBool, DTuple) causes new nodes to be created. We should make all Expr implementations be
	// pointers (which will also remove the need for using reflect.ValueOf above).
}

// walkableStmt is implemented by statements that can appear inside an expression (selects) or
// we want to start a walk from (using walkStmt).