70 lines
1.7 KiB
Rust
70 lines
1.7 KiB
Rust
#![warn(clippy::or_fun_call)]
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use std::collections::BTreeMap;
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use std::collections::HashMap;
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/// Checks implementation of the `OR_FUN_CALL` lint.
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fn or_fun_call() {
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struct Foo;
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impl Foo {
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fn new() -> Foo {
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Foo
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}
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}
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enum Enum {
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A(i32),
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}
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fn make<T>() -> T {
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unimplemented!();
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}
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let with_enum = Some(Enum::A(1));
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with_enum.unwrap_or(Enum::A(5));
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let with_const_fn = Some(::std::time::Duration::from_secs(1));
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with_const_fn.unwrap_or(::std::time::Duration::from_secs(5));
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let with_constructor = Some(vec![1]);
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with_constructor.unwrap_or(make());
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let with_new = Some(vec![1]);
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with_new.unwrap_or(Vec::new());
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let with_const_args = Some(vec![1]);
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with_const_args.unwrap_or(Vec::with_capacity(12));
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let with_err: Result<_, ()> = Ok(vec![1]);
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with_err.unwrap_or(make());
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let with_err_args: Result<_, ()> = Ok(vec![1]);
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with_err_args.unwrap_or(Vec::with_capacity(12));
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let with_default_trait = Some(1);
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with_default_trait.unwrap_or(Default::default());
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let with_default_type = Some(1);
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with_default_type.unwrap_or(u64::default());
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let with_vec = Some(vec![1]);
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with_vec.unwrap_or(vec![]);
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// FIXME #944: ~|SUGGESTION with_vec.unwrap_or_else(|| vec![]);
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let without_default = Some(Foo);
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without_default.unwrap_or(Foo::new());
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let mut map = HashMap::<u64, String>::new();
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map.entry(42).or_insert(String::new());
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let mut btree = BTreeMap::<u64, String>::new();
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btree.entry(42).or_insert(String::new());
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let stringy = Some(String::from(""));
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let _ = stringy.unwrap_or("".to_owned());
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}
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fn main() {}
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