load_module("reflection")
var parser := ChaiScript_Parser()
var parse_success = parser.parse("3 + 4", "INPUT")
var a := parser.ast()

assert_equal(eval(a), 7)

var childs := a.children.front().children
var node := childs[0]

var parser2 := ChaiScript_Parser()
parser2.parse("9", "INPUT")


a.children.front().replace_child(childs[0], parser2.ast())

assert_equal(eval(a), 13)
assert_equal(node.filename, "INPUT")



def my_fun()
{
  return 1;
}


assert_equal(true, my_fun.has_parse_tree());
assert_equal(false, `+`.has_parse_tree());

assert_throws("Function does not have a parse tree", fun() { `+`.get_parse_tree(); } );

var parsetree := my_fun.get_parse_tree();

assert_equal(1, eval(parsetree));

print(parsetree.text());