public void TestDynamicVisitor()
{
var ast = Parse("SELECT 3 + 4");
List <int> integers = new List <int>();
var visitor = SQLDynamicVisitor
.Default(node => { })
.ForType <IntegerLiteral>(node => integers.Add(int.Parse(node.Value)));
visitor.Visit(ast);
CollectionAssert.AreEqual(new[] { 3, 4 }, integers);
}
public void TestDynamicVisitorWorksWithBaseTypes()
{
var ast = Parse("SELECT 3 + '4' - NULL");
var literals = new List <string>();
var visitor = SQLDynamicVisitor
.Default(node => { })
.ForType <Literal>(node => literals.Add(node.Value))
.ForType <IntegerLiteral>(node => literals.Add(int.Parse(node.Value).ToString()))
.ForType <NullLiteral>(node => literals.Add(null));
visitor.Visit(ast);
CollectionAssert.AreEqual(new string[] { "3", "4", null }, literals);
}
