Pollu-Block/blockchain
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prepare hashing

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Florian Förster 2025-12-12 08:24:15 +01:00
parent 60794ddf2f
commit 61753f03d8
2 changed files with 1025 additions and 464 deletions
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1460
src/polluck_blockchain/placeholder_native.cpp
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29
src/polluck_blockchain/placeholder_native.pyx
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@ -17,6 +17,7 @@ from polluck_blockchain.block cimport Block
from libcpp.unordered_map cimport unordered_map from libcpp.unordered_map cimport unordered_map
from libcpp.string cimport string from libcpp.string cimport string
from libc.stdint cimport uint64_t from libc.stdint cimport uint64_t
from cython.operator import postincrement, dereference
ctypedef unsigned long ULong ctypedef unsigned long ULong
ctypedef unordered_map[uint64_t, Block*] BcHashmap ctypedef unordered_map[uint64_t, Block*] BcHashmap
@ -92,6 +93,12 @@ cdef class PyBlock:
return py_block return py_block
def __repr__(self):
return f"PyBlock({self.index, self.timestamp, self.nonce, self.data})"
def __str__(self):
return self.__repr__()
# cpdef _perform_hash(self): # cpdef _perform_hash(self):
# parts = bytearray() # parts = bytearray()
# parts.extend(self._index.to_bytes(8, "big")) # parts.extend(self._index.to_bytes(8, "big"))
@ -164,15 +171,29 @@ cdef class Blockchain:
def __init__(self, *args, **kwargs): def __init__(self, *args, **kwargs):
pass pass
# TODO add entries of map
# ownership is typically not transferred from the Blockchain extension class
def __dealloc__(self): def __dealloc__(self):
# ownership is typically not transferred from the Blockchain extension class
cdef BcHashmap.iterator it = self._chain.begin()
if self._chain is not NULL: if self._chain is not NULL:
while it != self._chain.end():
del dereference(it).second
postincrement(it)
del self._chain del self._chain
self._chain = NULL self._chain = NULL
def __len__(self): def __len__(self):
return self._index + 1 return self._index + 1
def print_key_value_pair(self):
cdef BcHashmap.iterator it = self._chain.begin()
cdef Block *block
while it != self._chain.end():
print(dereference(it).first)
block = dereference(it).second
py_block = PyBlock.from_ptr(block)
print(py_block)
postincrement(it)
@property @property
def genesis_done(self): def genesis_done(self):
@ -207,9 +228,9 @@ cdef class Blockchain:
"0".encode("UTF-8"), "0".encode("UTF-8"),
"".encode("UTF-8"), "".encode("UTF-8"),
) )
block.hash = <string>"dummy hash".encode("UTF-8") block.hash = "dummy hash".encode("UTF-8")
self.add_block(block) self.add_block(block)
self._genesis_done = <bint>1 self._genesis_done = True
def new_block(self, data): def new_block(self, data):
if not self._genesis_done: if not self._genesis_done: