43 lines
1.4 KiB
Rust
43 lines
1.4 KiB
Rust
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// Copyright 2015-2017 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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// Chain verifiers.
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use error::Error;
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use header::Header;
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/// Sequential chain verifier.
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///
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/// See docs on `Engine` relating to proving functions for more details.
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/// Headers here will have already passed "basic" verification.
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pub trait ChainVerifier {
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/// Lightly verify the next block header.
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/// This may not be a header that requires a proof.
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fn verify_light(&self, header: &Header) -> Result<(), Error>;
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/// Perform potentially heavier checks on the next block header.
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fn verify_heavy(&self, header: &Header) -> Result<(), Error> {
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self.verify_light(header)
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}
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}
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/// No-op chain verifier.
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pub struct NoOp;
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impl ChainVerifier for NoOp {
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fn verify_light(&self, _header: &Header) -> Result<(), Error> { Ok(()) }
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}
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