richardkiss

#!/usr/bin/env python

import subprocess
import sys


output = subprocess.check_output(["ls"] + sys.argv[1:])

lines = output.split("\n")

richardkiss

from pycoin.encoding.hexbytes import b2h
from pycoin.intbytes import int2byte
from pycoin.key import Key
from pycoin.networks.registry import network_for_netcode
from pycoin.satoshi.der import sigencode_der

network = network_for_netcode('XTN')

Tx = network.tx
TxIn = network.tx.TxIn

richardkiss

Idempotent clarifications

Here are a bunch of changes you can make for humans only. None of these changes should change how it compiles, so you should be able to change anything in this section and compare the resultant compile. It should be identical.

reformat

I've really love an automated pretty-printer akin to "black" for python or "cargo fmt" for rust so you can write whatever mess you want and have a computer indent it so it looks nice, but I haven't been able to find one yet.

richardkiss

#!/bin/sh

VENV_PATH=${@:-${VENV_BASE_PATH:-~/tmp/virtualenvs}}/`pwd | sed "s|/|_|g"`/venv

if [ -e $VENV_PATH ]
then
    echo rm -rf $VENV_PATH
    echo and try again
else
    mkdir -p $VENV_PATH

richardkiss

import zlib

from chia.wallet.puzzles.load_clvm import load_clvm
from chia.wallet.puzzles import p2_delegated_puzzle_or_hidden_puzzle as standard_puzzle
from chia.wallet.puzzles.cc_loader import CC_MOD

OFFER_MOD = load_clvm("settlement_payments.clvm")

puzzle_dict = bytes(OFFER_MOD) + bytes(standard_puzzle.MOD) + bytes(CC_MOD)

richardkiss

Block Generators

Block generators in Chia are clvm programs that, when run with particular arguments, produce a list of coin spends. This provides opportunity to do compression by recognizing patterns and encoding.

CLVM Serialization

The standard serialization mechanism of clvm is defined here.

If you review this specification, you'll see that deserialization begins by inspecting the first byte. If the byte is 0xff, the object is a pair. If the byte is 0x00 to 0xfb, the object is an atom whose length is partially or fully encoded by this first byte.

richardkiss

(mod arguments

  ; this generator blob will fail if the correct run-time parameters are not included
  
  (defun sha256tree
         (TREE)
         (if (l TREE)
             (sha256 2 (sha256tree (f TREE)) (sha256tree (r TREE)))
             (sha256 1 TREE)
         )

richardkiss

(mod V0 ;; V0 should be 0

  (include *standard-cl-21*)

  ;; projective point: ((X . Y) . Z)

  (defun-inline x-for-p (POINT) (f (f POINT)))
  (defun-inline y-for-p (POINT) (r (f POINT)))
  (defun-inline z-for-p (POINT) (r POINT))

richardkiss

from math import comb
from typing import List


Hand = List[int]

      
def hand_from_index(index: int, deck_indices: List[int], hand_size: int) -> Hand:
    hand = []
    deck_size = len(deck_indices)

richardkiss

The load_clvm method has been duplicated in multiple places, each version with slightly different semantics and bugs. We present here a set of tiny python wheels that solve many problems with chialisp contracts including:

• distribution of libraries
• distribution of compiled .hex files
• automatic dynamic builds in development mode
• dependency analysis (on library include files)

runtime_builder