     1
     2
     3
     4
     5
     6
     7
     8
     9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68

    // Copyright 2015-2017 Parity Technologies (UK) Ltd.
    // This file is part of Parity.

    // Parity is free software: you can redistribute it and/or modify
    // it under the terms of the GNU General Public License as published by
    // the Free Software Foundation, either version 3 of the License, or
    // (at your option) any later version.

    // Parity is distributed in the hope that it will be useful,
    // but WITHOUT ANY WARRANTY; without even the implied warranty of
    // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    // GNU General Public License for more details.

    // You should have received a copy of the GNU General Public License
    // along with Parity.  If not, see <http://www.gnu.org/licenses/>.

    /// Preconfigured validator list.

    use util::Address;
    use super::ValidatorSet;

    #[derive(Debug, PartialEq, Eq, Default)]
    pub struct SimpleList {
    	validators: Vec<Address>,
    	validator_n: usize,
    }

    impl SimpleList {
    	pub fn new(validators: Vec<Address>) -> Self {
    		SimpleList {
    			validator_n: validators.len(),
    			validators: validators,
    		}
    	}
    }

    impl ValidatorSet for SimpleList {
    	fn contains(&self, address: &Address) -> bool {
    		self.validators.contains(address)
    	}

    	fn get(&self, nonce: usize) -> Address {
    		self.validators.get(nonce % self.validator_n).expect("There are validator_n authorities; taking number modulo validator_n gives number in validator_n range; qed").clone()
    	}

    	fn count(&self) -> usize {
    		self.validator_n
    	}
    }

    #[cfg(test)]
    mod tests {
    	use std::str::FromStr;
    	use util::Address;
    	use super::super::ValidatorSet;
    	use super::SimpleList;

    	#[test]
    	fn simple_list() {
    		let a1 = Address::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap();
    		let a2 = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap();
    		let list = SimpleList::new(vec![a1.clone(), a2.clone()]);
    		assert!(list.contains(&a1));
    		assert_eq!(list.get(0), a1);
    		assert_eq!(list.get(1), a2);
    		assert_eq!(list.get(2), a1);
    	}
    }

# Help

## Keyboard Shortcuts

?
  Show this help dialog
S
  Focus the search field
⇤
  Move up in search results
⇥
  Move down in search results
⏎
  Go to active search result
+
  Collapse/expand all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g. `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g. `vec -> usize` or `* -> vec`)