9cfc42275d
This is still very slow, because we do a trait lookup for each field. Perhaps storing the visited types in a set to reuse types would improve performance somewhat. Also we may want to pre-decide some known types (e.g. `Vec<T>`, `Option<T>`).
68 lines
1.1 KiB
Rust
68 lines
1.1 KiB
Rust
#![feature(plugin)]
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#![plugin(clippy)]
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#![allow(dead_code)]
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#![deny(new_without_default, new_without_default_derive)]
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struct Foo;
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impl Foo {
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fn new() -> Foo { Foo } //~ERROR: you should consider deriving a `Default` implementation for `Foo`
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}
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struct Bar;
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impl Bar {
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fn new() -> Self { Bar } //~ERROR: you should consider deriving a `Default` implementation for `Bar`
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}
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struct Ok;
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impl Ok {
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fn new() -> Self { Ok }
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}
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impl Default for Ok {
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fn default() -> Self { Ok }
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}
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struct Params;
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impl Params {
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fn new(_: u32) -> Self { Params }
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}
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struct GenericsOk<T> {
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bar: T,
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}
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impl<U> Default for GenericsOk<U> {
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fn default() -> Self { unimplemented!(); }
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}
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impl<'c, V> GenericsOk<V> {
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fn new() -> GenericsOk<V> { unimplemented!() }
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}
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struct LtOk<'a> {
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foo: &'a bool,
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}
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impl<'b> Default for LtOk<'b> {
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fn default() -> Self { unimplemented!(); }
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}
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impl<'c> LtOk<'c> {
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fn new() -> LtOk<'c> { unimplemented!() }
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}
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struct LtKo<'a> {
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foo: &'a bool,
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}
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impl<'c> LtKo<'c> {
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fn new() -> LtKo<'c> { unimplemented!() } //~ERROR: you should consider adding a `Default` implementation for
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}
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fn main() {}
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