static Object.Object evalHashIndexExpression(Object.Object hash, Object.Object index)
{
Object.Hash hashObject = (Object.Hash)hash;
if (!(index is Object.Hashable))
{
return(newError("unusable as hash key: {0}", index.Type()));
}
Object.Hashable key = (Object.Hashable)index;
Object.HashPair pair;
if (!hashObject.Pairs.TryGetValue(key.HashKey(), out pair))
{
return(NULL);
}
return(pair.Value);
}
static error executeHashIndex(Object.Object hash, Object.Object index)
{
Object.Hash hashObject = (Object.Hash)hash;
if (!(index is Object.Hashable))
{
return(string.Format("unusable as hash key: {0}", index.Type()));
}
Object.Hashable key = (Object.Hashable)index;
Object.HashPair pair;
if (!hashObject.Pairs.TryGetValue(key.HashKey(), out pair))
{
return(push(Null));
}
return(push(pair.Value));
}