Function NavigateExpr

common/ast/navigable.go:55–63

NavigateExpr creates a NavigableExpr whose type information is backed by the input AST. If the expression is already a NavigableExpr, the parent and depth information will be propagated on the new NavigableExpr value; otherwise, the expr value will be treated as though it is the root of the express

(ast *AST, expr Expr)

// propagated on the new NavigableExpr value; otherwise, the expr value will be treated
// as though it is the root of the expression graph with a depth of 0.
func NavigateExpr(ast *AST, expr Expr) NavigableExpr {
	depth := 0
	var parent NavigableExpr = nil
	if nav, ok := expr.(NavigableExpr); ok {
		depth = nav.Depth()
		parent, _ = nav.Parent()
	}
	return newNavigableExpr(ast, parent, expr, depth)
}

// ExprMatcher takes a NavigableExpr in and indicates whether the value is a match.
//