104 lines
2.3 KiB
Rust
104 lines
2.3 KiB
Rust
//@aux-build: proc_macros.rs:proc-macro
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#![deny(clippy::default_trait_access)]
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#![allow(dead_code, unused_imports)]
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#![allow(clippy::uninlined_format_args)]
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extern crate proc_macros;
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use proc_macros::with_span;
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use std::default::Default as D2;
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use std::{default, string};
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fn main() {
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let s1: String = String::default();
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let s2 = String::default();
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let s3: String = String::default();
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let s4: String = String::default();
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let s5 = string::String::default();
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let s6: String = String::default();
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let s7 = std::string::String::default();
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let s8: String = DefaultFactory::make_t_badly();
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let s9: String = DefaultFactory::make_t_nicely();
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let s10 = DerivedDefault::default();
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let s11: GenericDerivedDefault<String> = GenericDerivedDefault::default();
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let s12 = GenericDerivedDefault::<String>::default();
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let s13 = TupleDerivedDefault::default();
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let s14: TupleDerivedDefault = TupleDerivedDefault::default();
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let s15: ArrayDerivedDefault = ArrayDerivedDefault::default();
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let s16 = ArrayDerivedDefault::default();
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let s17: TupleStructDerivedDefault = TupleStructDerivedDefault::default();
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let s18 = TupleStructDerivedDefault::default();
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let s19 = <DerivedDefault as Default>::default();
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let s20 = UpdateSyntax {
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s: "foo",
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..Default::default()
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};
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let _s21: String = with_span!(s Default::default());
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println!(
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"[{}] [{}] [{}] [{}] [{}] [{}] [{}] [{}] [{}] [{:?}] [{:?}] [{:?}] [{:?}] [{:?}] [{:?}] [{:?}] [{:?}] [{:?}] [{:?}] [{:?}]",
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s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13, s14, s15, s16, s17, s18, s19, s20,
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);
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}
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struct DefaultFactory;
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impl DefaultFactory {
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pub fn make_t_badly<T: Default>() -> T {
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Default::default()
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}
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pub fn make_t_nicely<T: Default>() -> T {
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T::default()
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}
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}
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#[derive(Debug, Default)]
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struct DerivedDefault {
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pub s: String,
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}
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#[derive(Debug, Default)]
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struct GenericDerivedDefault<T: Default + std::fmt::Debug> {
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pub s: T,
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}
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#[derive(Debug, Default)]
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struct TupleDerivedDefault {
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pub s: (String, String),
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}
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#[derive(Debug, Default)]
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struct ArrayDerivedDefault {
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pub s: [String; 10],
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}
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#[derive(Debug, Default)]
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struct TupleStructDerivedDefault(String);
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#[derive(Debug, Default)]
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struct UpdateSyntax {
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pub s: &'static str,
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pub u: u64,
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}
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