Struct NodeConstraint 

pub struct NodeConstraint(pub u64);

Constraint on allowed node types, as a set of node types.

Tuple Fields

0: u64

Implementations

impl NodeConstraint

pub fn matches(&self, node_type: NodeType) -> bool

Examples

let only_dirs: NodeConstraint = "dir".parse().unwrap();
let history_nodes: NodeConstraint = "rel,rev".parse().unwrap();
let all_nodes: NodeConstraint = "*".parse().unwrap();

assert!(only_dirs.matches(NodeType::Directory));
assert!(!only_dirs.matches(NodeType::Content));
assert!(history_nodes.matches(NodeType::Release));
assert!(history_nodes.matches(NodeType::Revision));
assert!(!history_nodes.matches(NodeType::Origin));
for node_type in NodeType::all() {
    assert!(all_nodes.matches(node_type));
}

pub fn to_vec(&self) -> Vec<NodeType>

Trait Implementations

impl Clone for NodeConstraint

fn clone(&self) -> NodeConstraint

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for NodeConstraint

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for NodeConstraint

fn default() -> Self

Returns the “default value” for a type.

impl Display for NodeConstraint

fn fmt(&self, f: &mut Formatter<'_>) -> Result

assert_eq!(format!("{}", NodeConstraint::default()), "*");
assert_eq!(
    format!("{}", NodeConstraint(0b000011)),
    "cnt,dir"
);
assert_eq!(
    format!("{}", NodeConstraint(0b111100)),
    "ori,rel,rev,snp"
);

impl FromStr for NodeConstraint

fn from_str(s: &str) -> Result<Self, Self::Err>

Examples

assert_eq!("*".parse::<NodeConstraint>(), Ok(NodeConstraint(0b111111)));
assert_eq!("rel".parse::<NodeConstraint>(), Ok(NodeConstraint(0b001000)));
assert_eq!("dir,cnt".parse::<NodeConstraint>(), Ok(NodeConstraint(0b000011)));
assert!(matches!("xyz".parse::<NodeConstraint>(), Err(_)));

type Err = String

The associated error which can be returned from parsing.

impl PartialEq for NodeConstraint

fn eq(&self, other: &NodeConstraint) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for NodeConstraint

impl StructuralPartialEq for NodeConstraint