warning: you should consider adding a `Default` implementation for `LR0ItemSet<'grammar>` --> src/lr0/core.rs:111:5 | 111 | / pub fn new() -> Self { 112 | | Self { 113 | | items: HashSet::new(), 114 | | } 115 | | } | |_____^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default = note: `#[warn(clippy::new_without_default)]` on by default help: try adding this | 110 + impl<'grammar> Default for LR0ItemSet<'grammar> { 111 + fn default() -> Self { 112 + Self::new() 113 + } 114 + } |

warning: this lifetime isn't used in the function definition --> src/lr0/core.rs:44:23 | 44 | pub fn transition<'a>(&self, from: usize, via: &Term) -> Option<usize> { | ^^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes = note: `#[warn(clippy::extra_unused_lifetimes)]` on by default

warning: struct `LR0Closure` has a public `len` method, but no `is_empty` method --> src/lr0/core.rs:40:5 | 40 | pub fn len(&self) -> usize { | ^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty = note: `#[warn(clippy::len_without_is_empty)]` on by default

warning: associated items `new`, `get_index_of`, and `get` are never used --> src/slr/helper.rs:15:12 | 14 | impl<'grammar> IndexedGrammar<'grammar> { | --------------------------------------- associated items in this implementation 15 | pub fn new(grammar: &'grammar Grammar) -> IndexedGrammar<'grammar> { | ^^^ ... 34 | pub fn get_index_of(&self, expr: &Expression) -> Option<usize> { | ^^^^^^^^^^^^ ... 38 | pub(crate) fn get(&self, expr: &Expression) -> Option<Production> { | ^^^

warning: associated items `new`, `shift`, `reduce`, `goto`, and `build` are never used --> src/slr/builder.rs:63:12 | 62 | impl<'grammar> SLRTableBuilder<'grammar> { | ---------------------------------------- associated items in this implementation 63 | pub fn new( | ^^^ ... 83 | fn shift(&self, from: usize, via: &'grammar Term) { | ^^^^^ ... 93 | fn reduce(&self, index: usize, lr0: &LR0Item) { | ^^^^^^ ... 103 | fn goto(&self, from: usize, via: &'grammar Term) { | ^^^^ ... 114 | pub fn build(self) -> SLRTable<'grammar> { | ^^^^^