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Make the block header struct's internals private (#2000)

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* Make the block header struct's internals private

Currently, this involves a lot of explicit cloning, but we
could migrate the return types of the get_* functions to
be copies rather than references since they are mostly copy
types anyway.

I opted to eliminate the constructor in favor of using
Default::default() plus calling a bunch of setters. This
is similar to the model that a Google Protobuf client uses
and I think it looks fine.

* Drop some unnecessary cloning by comparing references

* Fix compiler errors from callsites in tests.
This commit is contained in:
Nipunn Koorapati
2016-08-29 02:35:24 -07:00
committed by Arkadiy Paronyan
parent 2d883c43c9
commit 4389742ca3
21 changed files with 336 additions and 336 deletions
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31
ethcore/src/snapshot/block.rs
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@@ -90,27 +90,26 @@ impl AbridgedBlock {
let rlp = UntrustedRlp::new(&self.rlp).decompress(RlpType::Blocks);
let rlp = UntrustedRlp::new(&rlp);
let mut header = Header {
parent_hash: parent_hash,
author: try!(rlp.val_at(0)),
state_root: try!(rlp.val_at(1)),
transactions_root: try!(rlp.val_at(2)),
receipts_root: try!(rlp.val_at(3)),
log_bloom: try!(rlp.val_at(4)),
difficulty: try!(rlp.val_at(5)),
number: number,
gas_limit: try!(rlp.val_at(6)),
gas_used: try!(rlp.val_at(7)),
timestamp: try!(rlp.val_at(8)),
extra_data: try!(rlp.val_at(9)),
..Default::default()
};
let mut header: Header = Default::default();
header.set_parent_hash(parent_hash);
header.set_author(try!(rlp.val_at(0)));
header.set_state_root(try!(rlp.val_at(1)));
header.set_transactions_root(try!(rlp.val_at(2)));
header.set_receipts_root(try!(rlp.val_at(3)));
header.set_log_bloom(try!(rlp.val_at(4)));
header.set_difficulty(try!(rlp.val_at(5)));
header.set_number(number);
header.set_gas_limit(try!(rlp.val_at(6)));
header.set_gas_used(try!(rlp.val_at(7)));
header.set_timestamp(try!(rlp.val_at(8)));
header.set_extra_data(try!(rlp.val_at(9)));
let transactions = try!(rlp.val_at(10));
let uncles: Vec<Header> = try!(rlp.val_at(11));
let mut uncles_rlp = RlpStream::new();
uncles_rlp.append(&uncles);
header.uncles_hash = uncles_rlp.as_raw().sha3();
header.set_uncles_hash(uncles_rlp.as_raw().sha3());
let mut seal_fields = Vec::new();
for i in (HEADER_FIELDS + BLOCK_FIELDS)..rlp.item_count() {