private static bool CheckVariableNameInUse(VariableExpression expression, string variableName)
{
if (expression == null)
return false;
var scripts = new List<LuatScript>();
var bs = expression.FindAncestor<BlockStatement>();
while (bs != null)
{
foreach (var i in bs.Locals.Entries)
{
LuatTable table = i.Value;
if (!scripts.Contains(i.Key))
scripts.Add(i.Key);
foreach (var v in table.Children)
{
string name = v.Key;
if (name == variableName)
return true;
}
}
bs = bs.FindAncestor<BlockStatement>();
}
foreach (LuatScript script in scripts)
{
var visited = new HashSet<LuatValue>();
IEnumerable<KeyValuePair<string, LuatValue>> children = script.Table.GetChildren(ref visited);
foreach (KeyValuePair<string, LuatValue> child in children)
{
if (child.Key == variableName)
return true;
}
}
return false;
}
