70 lines
1.1 KiB
Rust
70 lines
1.1 KiB
Rust
#![warn(clippy::to_string_in_display)]
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#![allow(clippy::inherent_to_string_shadow_display)]
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use std::fmt;
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struct A;
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impl A {
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fn fmt(&self) {
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self.to_string();
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}
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}
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trait B {
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fn fmt(&self) {}
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}
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impl B for A {
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fn fmt(&self) {
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self.to_string();
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}
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}
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impl fmt::Display for A {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "{}", self.to_string())
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}
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}
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fn fmt(a: A) {
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a.to_string();
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}
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struct C;
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impl C {
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fn to_string(&self) -> String {
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String::from("I am C")
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}
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}
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impl fmt::Display for C {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "{}", self.to_string())
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}
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}
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enum D {
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E(String),
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F,
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}
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impl std::fmt::Display for D {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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match &self {
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Self::E(string) => write!(f, "E {}", string.to_string()),
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Self::F => write!(f, "F"),
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}
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}
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}
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fn main() {
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let a = A;
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a.to_string();
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a.fmt();
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fmt(a);
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let c = C;
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c.to_string();
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}
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