Function MatchSubset

common/ast/navigable.go:122–136

MatchSubset applies an ExprMatcher to a list of NavigableExpr values and their descendants, producing a subset of NavigableExpr values which match.

(exprs []NavigableExpr, matcher ExprMatcher)

// MatchSubset applies an ExprMatcher to a list of NavigableExpr values and their descendants, producing a
// subset of NavigableExpr values which match.
func MatchSubset(exprs []NavigableExpr, matcher ExprMatcher) []NavigableExpr {
	matches := []NavigableExpr{}
	navVisitor := &baseVisitor{
		visitExpr: func(e Expr) {
			nav := e.(NavigableExpr)
			if matcher(nav) {
				matches = append(matches, nav)
			}
		},
	}
	for _, expr := range exprs {
		visit(expr, navVisitor, postOrder, 0, 1)
	}
	return matches
}

// Visitor defines an object for visiting Expr and EntryExpr nodes within an expression graph.
type Visitor interface {