101 lines
2.4 KiB
Rust
101 lines
2.4 KiB
Rust
use std::collections::HashMap;
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use util::hash::*;
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use util::rlp::*;
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use util::hashdb::*;
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use util::overlaydb::*;
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use util::sha3::*;
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use blockheader::*;
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use block::*;
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use verifiedblock::*;
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use importroute::*;
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use account::*;
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use genesis::*;
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pub struct BlockChain {
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genesis_block: Vec<u8>,
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genesis_header: Vec<u8>,
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genesis_hash: H256,
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genesis_state: HashMap<Address, Account>
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}
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impl BlockChain {
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/// Create new instance of blockchain from given Genesis
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///
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/// ```rust
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/// extern crate ethcore_util as util;
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/// extern crate ethcore;
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/// use std::str::FromStr;
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/// use ethcore::genesis::*;
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/// use ethcore::blockchain::*;
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/// use util::hash::*;
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///
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/// fn main() {
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/// let genesis = Genesis::new_frontier();
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/// let bc = BlockChain::new(genesis);
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/// let genesis_hash = "d4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3";
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/// assert_eq!(bc.genesis_hash(), &H256::from_str(genesis_hash).unwrap());
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/// }
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/// ```
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pub fn new(genesis: Genesis) -> BlockChain {
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let (genesis_block, genesis_state) = genesis.drain();
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let (genesis_header, genesis_hash) = {
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let rlp = Rlp::new(&genesis_block).at(0);
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(rlp.raw().to_vec(), BlockView::new_from_rlp(rlp).sha3())
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};
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BlockChain {
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genesis_block: genesis_block,
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genesis_header: genesis_header,
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genesis_hash: genesis_hash,
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genesis_state: genesis_state
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}
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}
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pub fn genesis_hash(&self) -> &H256 {
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&self.genesis_hash
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}
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pub fn genesis_block(&self, db: &OverlayDB) -> Block {
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let root = BlockView::new(&self.genesis_block).state_root();
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if db.exists(&root) {
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return Block::new_existing(db.clone(), root)
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}
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let mut block = Block::new(db.clone());
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block.mutable_state().insert_accounts(&self.genesis_state);
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block.mutable_state().commit_db();
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// TODO: set previous block
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// TODO: reset current
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block
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}
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pub fn verify_block<'a>(&self, block: &'a [u8]) -> VerifiedBlock<'a> {
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//TODO: verify block
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VerifiedBlock::new(block)
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}
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pub fn import_block(&self, block: &[u8], db: &OverlayDB) -> ImportRoute {
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let view = BlockView::new(block);
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// check if we already know this block
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if self.is_known(&view.sha3()) {
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}
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// check if we already know parent of this block
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if !self.is_known(&view.parent_hash()) {
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}
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unimplemented!();
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}
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/// Returns true if the given block is known
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/// (though not necessarily a part of the canon chain).
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pub fn is_known(&self, hash: &H256) -> bool {
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unimplemented!()
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// TODO: check is hash exist in hashes
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}
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}
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