Struct Trie 

pub struct Trie<T> { /* private fields */ }

Prefix tree for parsing items.

Used to efficiently store and retrieve sequences of active items during parsing.

Implementations

impl<T: Clone> Trie<T>

pub fn new() -> Self

Creates a new trie.

Examples

use gf_core::Trie;
let trie: Trie<i32> = Trie::new();
assert!(trie.is_empty());

pub fn insert_chain(&mut self, keys: &[String], obj: Vec<T>)

Inserts a chain of keys with value.

Arguments

• keys - Slice of keys.
• obj - Value to insert.

pub fn insert_chain1(&mut self, keys: &[String], obj: T)

Inserts a chain with single item.

Arguments

• keys - Slice of keys.
• obj - Single item to insert.

Examples

use gf_core::Trie;
let mut trie: Trie<i32> = Trie::new();
trie.insert_chain1(&["a".to_string(), "b".to_string()], 42);
// Verify the key path exists
assert!(trie.lookup("a").is_some());
assert!(trie.lookup("a").unwrap().lookup("b").is_some());

pub fn lookup(&self, key: &str) -> Option<&Trie<T>>

Looks up a key.

Arguments

• key - The key to look up.

Returns

Optional reference to the sub-trie.

pub fn is_empty(&self) -> bool

Checks if trie is empty.

Returns

True if no value and no items.

Examples

use gf_core::Trie;
let trie: Trie<i32> = Trie::new();
assert!(trie.is_empty());

Trait Implementations

impl<T: Clone> Clone for Trie<T>

fn clone(&self) -> Trie<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for Trie<T>

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

Formats the value using the given formatter.

impl<T: Clone> Default for Trie<T>

fn default() -> Self

Returns the “default value” for a type.