Array to map operator for #1415

pkg/yqlib/operator_expression.go

@@ -0,0 +1,16 @@
+package yqlib
+
+type expressionOpPreferences struct {
+	expression string
+}
+
+func expressionOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) {
+
+	prefs := expressionNode.Operation.Preferences.(expressionOpPreferences)
+	expNode, err := ExpressionParser.ParseExpression(prefs.expression)
+	if err != nil {
+		return Context{}, err
+	}
+
+	return d.GetMatchingNodes(context, expNode)
+}