Stack.iter

rainbowadn/data/collection/stack/stack.py

@@ -68,6 +68,19 @@ class Stack(RecursiveMentionable, Generic[ElementType]):
         assert isinstance(factory, RainbowFactory)
         return cls.of(factory, map(HashPoint.of, elements))
 
+    @classmethod
+    def iter(
+            cls,
+            reference: NullableReference['Stack[ElementType]']
+    ) -> Iterable[HashPoint[ElementType]]:
+        assert isinstance(reference, NullableReference)
+        if reference.reference.null():
+            pass
+        else:
+            stack: Stack[ElementType] = reference.reference.resolve().resolve()
+            yield stack.element
+            yield from cls.iter(stack.previous)
+
 
 class StackFactory(RainbowFactory[Stack[ElementType]], Generic[ElementType]):
     def __init__(self, factory: RainbowFactory[ElementType]):

rainbowadn/testing/test_all.py

@@ -30,6 +30,7 @@ from rainbowadn.wrisbt.wrisbtroot import WrisbtRoot
 
 
 class TestAll(unittest.TestCase):
+    """examples rather than real tests"""
     def test_bankchain(self):
         with self.subTest('setup'):
             dr = DictResolver()

rainbowadn/v13/bankstate.py

@@ -19,7 +19,7 @@ from rainbowadn.hashing.resolverorigin import ResolverOrigin
 from rainbowadn.hashing.static import StaticFactory, StaticMentionable
 from rainbowadn.v13.algo import MINT_CONST
 from rainbowadn.v13.subject import Subject
-from rainbowadn.v13.transaction import Coin, Transaction, TransactionData
+from rainbowadn.v13.transaction import Coin, Transaction
 
 __all__ = ('BankState',)
 
@@ -87,55 +87,63 @@ class BankState(RecursiveMentionable, StaticMentionable):
             HashPoint.of(Integer(self.length.resolve().integer + 1))
         )
 
-    def push(self, transaction: HashPoint[Transaction]) -> 'BankState':
-        assert isinstance(transaction, HashPoint)
-
-        transaction_resolved = transaction.resolve()
-        assert isinstance(transaction_resolved, Transaction)
-
-        miner: Nullable[HashPoint[Subject]] = self.miner.reference
-        assert isinstance(miner, Nullable)
-        if miner.null():
-            mint = MINT_CONST
-        else:
-            mint = 0
-
-        assert transaction_resolved.verify(mint)
-        transaction_data: TransactionData = transaction_resolved.data.resolve()
-        assert isinstance(transaction_data, TransactionData)
-
-        minted: ActiveBinaryTree[Coin, Integer] = ActiveBinaryTree(
+    def minted_tree(self) -> ActiveBinaryTree[Coin, Integer]:
+        return ActiveBinaryTree(
             AVLBTBP(HashComparator(Fail())), self.minted
         )
-        assert isinstance(minted, ActiveBinaryTree)
-        used: ActiveBinaryTree[Coin, Integer] = ActiveBinaryTree(
+
+    def used_tree(self) -> ActiveBinaryTree[Coin, Integer]:
+        return ActiveBinaryTree(
             AVLBTBP(HashComparator(Fail())), self.used
         )
-        assert isinstance(used, ActiveBinaryTree)
 
-        in_coin: HashPoint[Coin]
-        for in_coin in transaction_data.iter_in_coins():
-            assert isinstance(in_coin, HashPoint)
+    def use_coins(self, coins: Iterable[HashPoint[Coin]]) -> 'BankState':
+        minted: ActiveBinaryTree[Coin, Integer] = self.minted_tree()
+        used: ActiveBinaryTree[Coin, Integer] = self.used_tree()
+        for in_coin in coins:
             assert not minted.query_tree().query(in_coin).null()
             assert used.query_tree().query(in_coin).null()
             used = used.add(in_coin)
-            assert isinstance(used, ActiveBinaryTree)
+        return BankState(self.minted, used.reference, self.miner, self.length)
 
-        coin: Coin
-        for coin, miner in transaction_resolved.iter_coins(mint, miner):
-            assert isinstance(coin, Coin)
-            assert isinstance(miner, Nullable)
+    def mint_coins(
+            self,
+            transaction: Transaction
+    ) -> 'BankState':
+        assert self.verify(transaction)
+        miner = self.miner_nullable()
+        minted: ActiveBinaryTree[Coin, Integer] = self.minted_tree()
+        for coin, miner in transaction.iter_coins(self.mint(), miner):
             assert minted.query_tree().query(HashPoint.of(coin)).null()
             minted = minted.add(HashPoint.of(coin))
             assert isinstance(minted, ActiveBinaryTree)
+        return BankState(minted.reference, self.used, NullableReference(miner, self.miner.factory), self.length)
 
-        return BankState(
-            minted.reference,
-            used.reference,
-            NullableReference(miner, self.miner.factory),
-            self.length
+    def miner_nullable(self) -> Nullable[HashPoint[Subject]]:
+        return self.miner.reference
+
+    def mint(self) -> int:
+        if self.miner_nullable().null():
+            return MINT_CONST
+        else:
+            return 0
+
+    def verify(self, transaction: Transaction) -> bool:
+        assert isinstance(transaction, Transaction)
+        assert transaction.verify(self.mint())
+        return True
+
+    def _push(self, transaction: Transaction) -> 'BankState':
+        assert isinstance(transaction, Transaction)
+        return self.use_coins(
+            transaction.data.resolve().iter_in_coins()
+        ).mint_coins(
+            transaction
         )
 
+    def push(self, transaction: HashPoint[Transaction]) -> 'BankState':
+        return self._push(transaction.resolve())
+
     def str(self, tab: int) -> str:
         assert isinstance(tab, int)
         return f'(' \

rainbowadn/v13/transaction.py

@@ -137,73 +137,26 @@ class TransactionData(RecursiveMentionable, StaticMentionable):
 
     def _verify_signatures(
             self,
-            in_coins: NullableReference[Stack[Coin]],
-            signatures: NullableReference[Stack[Signature]],
+            signatures: NullableReference[Stack[Signature]]
     ) -> bool:
-        assert isinstance(in_coins, NullableReference)
-        assert isinstance(signatures, NullableReference)
-        if in_coins.reference.null():
-            assert signatures.reference.null()
-            return True
-        else:
-            assert not signatures.reference.null()
-            in_coins_stack: Stack[Coin] = in_coins.reference.resolve().resolve()
-            assert isinstance(in_coins_stack, Stack)
-            signatures_stack: Stack[Signature] = signatures.reference.resolve().resolve()
-            assert isinstance(signatures_stack, Stack)
-            coin: Coin = in_coins_stack.element.resolve()
-            assert isinstance(coin, Coin)
-            coin_data: CoinData = coin.data.resolve()
-            assert isinstance(coin_data, CoinData)
-            owner: Subject = coin_data.owner.resolve()
-            assert isinstance(owner, Subject)
-            signature: Signature = signatures_stack.element.resolve()
-            assert isinstance(signature, Signature)
-            assert signature.verify(owner, self.hash_point)
-            assert self._verify_signatures(in_coins_stack.previous, signatures_stack.previous)
+        for coin, signature in zip(self.iter_in_coins(), Stack.iter(signatures), strict=True):
+            assert signature.resolve().verify(
+                coin.resolve().data.resolve().owner.resolve(),
+                self.hash_point
+            )
         return True
 
     def iter_in_coins(self) -> Iterable[HashPoint[Coin]]:
-        in_coins: NullableReference[Stack[Coin]] = self.in_coins
-        assert isinstance(in_coins, NullableReference)
-        while not in_coins.reference.null():
-            in_coins_stack: Stack[Coin] = in_coins.reference.resolve().resolve()
-            assert isinstance(in_coins_stack, Stack)
-            coin: HashPoint[Coin] = in_coins_stack.element
-            assert isinstance(coin, HashPoint)
-            yield coin
-            in_coins = in_coins_stack.previous
-            assert isinstance(in_coins, NullableReference)
-        assert in_coins.reference.null()
+        return Stack.iter(self.in_coins)
 
     def _total_in(self) -> int:
-        total_in = 0
-        coin: HashPoint[Coin]
-        for coin in self.iter_in_coins():
-            assert isinstance(coin, HashPoint)
-            total_in += coin.resolve().data.resolve().value.resolve().integer
-        return total_in
+        return sum(coin.resolve().data.resolve().value.resolve().integer for coin in self.iter_in_coins())
 
     def iter_out_coins(self) -> Iterable[HashPoint[CoinData]]:
-        out_coins: NullableReference[Stack[CoinData]] = self.out_coins
-        assert isinstance(out_coins, NullableReference)
-        while not out_coins.reference.null():
-            out_coins_stack: Stack[CoinData] = out_coins.reference.resolve().resolve()
-            assert isinstance(out_coins_stack, Stack)
-            coin: HashPoint[CoinData] = out_coins_stack.element
-            assert isinstance(coin, HashPoint)
-            yield coin
-            out_coins = out_coins_stack.previous
-            assert isinstance(out_coins, NullableReference)
-        assert out_coins.reference.null()
+        return Stack.iter(self.out_coins)
 
     def _total_out(self) -> int:
-        total_out = 0
-        coin: HashPoint[CoinData]
-        for coin in self.iter_out_coins():
-            assert isinstance(coin, HashPoint)
-            total_out += coin.resolve().value.resolve().integer
-        return total_out
+        return sum(coin.resolve().value.resolve().integer for coin in self.iter_out_coins())
 
     def _verify_values(self, mint: int) -> bool:
         assert isinstance(mint, int)
@@ -221,7 +174,9 @@ class TransactionData(RecursiveMentionable, StaticMentionable):
     ) -> bool:
         assert isinstance(signatures, NullableReference)
         assert isinstance(mint, int)
-        return self._verify_signatures(self.in_coins, signatures) and self._verify_values(mint)
+        assert self._verify_signatures(signatures)
+        assert self._verify_values(mint)
+        return True
 
     def str(self, tab: int) -> str:
         assert isinstance(tab, int)
@@ -308,7 +263,8 @@ class Transaction(RecursiveMentionable, StaticMentionable):
         assert isinstance(mint, int)
         data: TransactionData = self.data.resolve()
         assert isinstance(data, TransactionData)
-        return data.verify(self.signatures, mint)
+        assert data.verify(self.signatures, mint)
+        return True
 
     def __str__(self):
         return f'(transaction)'