/*
* clones the entire chain
*/
public CH_closedScope(IEnumerable <Ref> items)
{
foreach (var itm in items)
{
LL_head = LL_head.chain(itm.name, itm.CH);
}
}
public static T findPay <T> (this LL <T> node_in, string search_name) => node_in.findNode(search_name).pay; // todo remove
public static IEnumerable <LL <T> > LIFO <T> (this LL <T> node_in)
{
for (var node = node_in; node != null; node = node.prev)
{
yield return(node);
}
}
public static void Test1_basic_LL_tests()
{
LL <int> empty_int = null;
foreach (var node in empty_int.chain("foo", 3).chain("bar", 4).LIFO())
{
Console.WriteLine(node.name + " " + node.pay); // mainly to test chaining from null
}
// hmm thats neat :)
// also single assignment. empty int is still null
D.Assert(empty_int.LIFO().ToArray().SequenceEqual(new LL <int> [0]));
D.Assert(empty_int.LIFO_shadowed().ToArray().SequenceEqual(new LL <int> [0]));
AUX.AssertThrows <LL_Exception> (() => empty_int.findPay("any key -- the LL is empty "));
var zing = ((LL <string>)null).
chain("v1", "val1").
chain("v2", "boioioioioiing").
chain("v1", "shadowed");
foreach (var node in zing.LIFO_shadowed())
{
Console.WriteLine(node.name + " " + node.pay);
}
AUX.AssertThrows <LL_Exception> (() => zing.findNode("non present key"));
Console.WriteLine("================= LL ok ============= ");
}
preCH_deltaScope(CH_closedScope origScope, LL <preCH> origLL, LL <preCH> own, LL <preCH> extnls)
{
D.Assert(origScope != null);
this.origScope = origScope;
origLL_head = origLL;
ownLL_head = own;
externals = extnls;
} // the readonlys need a detour over constructor
public preCH_deltaScope(CH_closedScope clSC)
{
D.Assert(clSC != null);
origScope = clSC;
foreach (var nodeCH in clSC.LL_head.LIFO_shadowed().Reverse())
{
origLL_head = origLL_head.chain(nodeCH.name, new adapter_preCH(nodeCH.pay));
}
}
public CH_deltaScope(CH_closedScope clsSc, LL <TypedCH> ll, LL <TypedCH> externals)
{
if (clsSc == null)
{
throw new ScopeException("origin scope can't be null");
}
orig_scope = clsSc;
this.ownLL_head = ll;
this.externals = externals;
}
public static IEnumerable <LL <T> > LIFO_shadowed <T> (this LL <T> node_in)
{
var seen = new HashSet <string>();
foreach (var node in node_in.LIFO())
{
if (!seen.Contains(node.name))
{
seen.Add(node.name);
yield return(node);
}
}
}
public static LL <T> findNode <T> (this LL <T> node_in, string search_name)
{
LL <T> node = node_in;
while (true)
{
if (node == null)
{
throw new LL_Exception();
}
if (search_name == node.name)
{
return(node);
}
node = node.prev;
}
}
public CH_deltaScope instantiate() // resolves all preCHs , triggers their instantiation to proper CHs
// using the decl interface is too headscratchy, becuase the original order between decls and refs (not within them) would have to be reconstructed ( self shadowing )
{
LL <TypedCH> CHdelt_own = null;
foreach (var n in ownLL_head.LIFO().Reverse())
{
CHdelt_own = CHdelt_own.chain(n.name, n.pay.CH);
}
LL <TypedCH> CHdelt_externals = null;
foreach (var n in externals.LIFO().Reverse())
{
CHdelt_externals = CHdelt_externals.chain(n.name, n.pay.CH);
}
return(new CH_deltaScope(origScope, CHdelt_own, CHdelt_externals));
}
public static Ref LL2Ref(LL <TypedCH> ll) => new Ref
{
name = ll.name, CH = ll.pay
};
public static T findPay <T> (this LL <T> node_in, string search_name) => node_in.findNode(search_name).pay; // todo remove
public static LL <T> chain <T> (this LL <T> orig, string name, T pay) => new LL <T>(name, pay, orig);
static Ref LL2Ref(LL <preCH> ll) => new Ref
{
name = ll.name, pre_ch = ll.pay
};
public LL(string name, T pay, LL <T> prev)
{
this.prev = prev; this.pay = pay; this.name = name;
}
public readonly LL <TypedCH> LL_head = null; // empty scope
CH_closedScope(LL <TypedCH> ll_in)
{
LL_head = ll_in;
}