56 lines
1.2 KiB
Rust
56 lines
1.2 KiB
Rust
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#![warn(clippy::crate_in_macro_def)]
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mod hygienic {
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#[macro_export]
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macro_rules! print_message_hygienic {
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() => {
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println!("{}", $crate::hygienic::MESSAGE);
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};
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}
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pub const MESSAGE: &str = "Hello!";
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}
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mod unhygienic {
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#[macro_export]
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macro_rules! print_message_unhygienic {
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() => {
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println!("{}", crate::unhygienic::MESSAGE);
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};
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}
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pub const MESSAGE: &str = "Hello!";
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}
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mod unhygienic_intentionally {
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// For cases where the use of `crate` is intentional, applying `allow` to the macro definition
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// should suppress the lint.
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#[allow(clippy::crate_in_macro_def)]
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#[macro_export]
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macro_rules! print_message_unhygienic_intentionally {
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() => {
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println!("{}", crate::CALLER_PROVIDED_MESSAGE);
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};
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}
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}
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#[macro_use]
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mod not_exported {
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macro_rules! print_message_not_exported {
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() => {
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println!("{}", crate::not_exported::MESSAGE);
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};
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}
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pub const MESSAGE: &str = "Hello!";
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}
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fn main() {
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print_message_hygienic!();
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print_message_unhygienic!();
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print_message_unhygienic_intentionally!();
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print_message_not_exported!();
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}
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pub const CALLER_PROVIDED_MESSAGE: &str = "Hello!";
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