bindings/python/src/block.c

	// Copyright (c) 2025-present The Bitcoin Core developers
	// Distributed under the MIT software license, see the accompanying
	// file COPYING or http://www.opensource.org/licenses/mit-license.php.

	#include "block.h"

	#include <btck/btck.h>

	#include "_slice.h"
	#include "block_hash.h"
	#include "transaction.h"

	struct Self
	{
	PyObject_HEAD
	struct btck_Block* impl;
	};

	static void dealloc(struct Self* self);
	static PyObject* new(PyTypeObject* type, PyObject* args, PyObject* kwargs);
	static PyObject* get_hash(struct Self const* self, void* closure);
	static Py_ssize_t length(struct Self const* self);
	static PyObject* item(struct Self* self, Py_ssize_t idx);

	static PySequenceMethods as_sequence = {
	.sq_length = (lenfunc)length,
	.sq_item = (ssizeargfunc)item,
	};

	static PyMappingMethods as_mapping = {
	.mp_length = (lenfunc)length,
	.mp_subscript = Slice_subscript,
	};

	PyTypeObject Block_Type = {
	PyVarObject_HEAD_INIT(NULL, 0)
	.tp_name = "btck.Block",
	.tp_doc = "Block object",
	.tp_basicsize = sizeof(struct Self),
	.tp_dealloc = (destructor)dealloc,
	.tp_flags = Py_TPFLAGS_DEFAULT,
	.tp_new = new,
	.tp_as_sequence = &as_sequence,
	.tp_as_mapping = &as_mapping,
	.tp_getset = (PyGetSetDef[]){
	{"hash", (getter)get_hash, NULL, "", NULL},
	{},
	},
	};

	static void dealloc(struct Self* self)
	{
	btck_Block_Release(self->impl);
	Py_TYPE(self)->tp_free((PyObject*)self);
	}

	static PyObject* new(PyTypeObject* Py_UNUSED(type), PyObject* args, PyObject* kwargs)
	{
	static char* kwlist[] = {"", NULL};

	Py_buffer raw;
	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "y*", kwlist, &raw)) {
	return NULL;
	}

	return Block_New(btck_Block_New(raw.buf, raw.len));
	}

	static PyObject* get_hash(struct Self const* self, void* Py_UNUSED(closure))
	{
	struct btck_BlockHash hash;
	btck_Block_GetHash(self->impl, &hash);
	return BlockHash_New(&hash);
	}

	static Py_ssize_t length(struct Self const* self)
	{
	return (Py_ssize_t)btck_Block_GetSize(self->impl);
	}

	static PyObject* item(struct Self* self, Py_ssize_t idx)
	{
	if (idx < 0 \|\| idx >= length(self)) {
	PyErr_SetString(PyExc_IndexError, "index out of range");
	return NULL;
	}
	return Transaction_New(btck_Block_At(self->impl, idx));
	}

	PyObject* Block_New(struct btck_Block* block)
	{
	struct Self* self = PyObject_New(struct Self, &Block_Type);
	if (self == NULL) {
	btck_Block_Release(block);
	return NULL;
	}
	self->impl = block;
	return (PyObject*)self;
	}

btck