openethereum/src/header.rs

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use util::hash::*;
use util::bytes::*;
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use util::uint::*;
use util::rlp::*;
pub static ZERO_ADDRESS: Address = Address([0x00; 20]);
pub static ZERO_H256: H256 = H256([0x00; 32]);
pub static ZERO_LOGBLOOM: LogBloom = H2048([0x00; 256]);
pub type LogBloom = H2048;
#[derive(Debug)]
pub struct Header {
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pub parent_hash: H256,
pub timestamp: U256,
pub number: U256,
pub author: Address,
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pub transactions_root: H256,
pub uncles_hash: H256,
pub extra_data: Bytes,
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pub state_root: H256,
pub receipts_root: H256,
pub log_bloom: LogBloom,
pub gas_used: U256,
pub gas_limit: U256,
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pub difficulty: U256,
pub seal: Vec<Bytes>,
}
impl Header {
pub fn new() -> Header {
Header {
parent_hash: ZERO_H256.clone(),
timestamp: BAD_U256.clone(),
number: ZERO_U256.clone(),
author: ZERO_ADDRESS.clone(),
transactions_root: ZERO_H256.clone(),
uncles_hash: ZERO_H256.clone(),
extra_data: vec![],
state_root: ZERO_H256.clone(),
receipts_root: ZERO_H256.clone(),
log_bloom: ZERO_LOGBLOOM.clone(),
gas_used: ZERO_U256.clone(),
gas_limit: ZERO_U256.clone(),
difficulty: ZERO_U256.clone(),
seal: vec![],
}
}
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}
impl Decodable for Header {
fn decode<D>(decoder: &D) -> Result<Self, DecoderError> where D: Decoder {
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let d = try!(decoder.as_list());
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let mut blockheader = Header {
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parent_hash: try!(Decodable::decode(&d[0])),
uncles_hash: try!(Decodable::decode(&d[1])),
author: try!(Decodable::decode(&d[2])),
state_root: try!(Decodable::decode(&d[3])),
transactions_root: try!(Decodable::decode(&d[4])),
receipts_root: try!(Decodable::decode(&d[5])),
log_bloom: try!(Decodable::decode(&d[6])),
difficulty: try!(Decodable::decode(&d[7])),
number: try!(Decodable::decode(&d[8])),
gas_limit: try!(Decodable::decode(&d[9])),
gas_used: try!(Decodable::decode(&d[10])),
timestamp: try!(Decodable::decode(&d[11])),
extra_data: try!(Decodable::decode(&d[12])),
seal: vec![],
};
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for i in 13..d.len() {
blockheader.seal.push(try!(Decodable::decode(&d[i])));
}
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Ok(blockheader)
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}
}
impl Encodable for Header {
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fn encode<E>(&self, encoder: &mut E) where E: Encoder {
encoder.emit_list(| e | {
self.parent_hash.encode(e);
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self.uncles_hash.encode(e);
self.author.encode(e);
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self.state_root.encode(e);
self.transactions_root.encode(e);
self.receipts_root.encode(e);
self.log_bloom.encode(e);
self.difficulty.encode(e);
self.number.encode(e);
self.gas_limit.encode(e);
self.gas_used.encode(e);
self.timestamp.encode(e);
self.extra_data.encode(e);
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for b in self.seal.iter() {
b.encode(e);
}
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})
}
}
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#[cfg(test)]
mod tests {
}