bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/project_model/src/cfg_flag.rs')
-rw-r--r--crates/project_model/src/cfg_flag.rs15
1 files changed, 14 insertions, 1 deletions
diff --git a/crates/project_model/src/cfg_flag.rs b/crates/project_model/src/cfg_flag.rs
index bfdfd458fb..f3dd8f5133 100644
--- a/crates/project_model/src/cfg_flag.rs
+++ b/crates/project_model/src/cfg_flag.rs
@@ -1,7 +1,7 @@
//! Parsing of CfgFlags as command line arguments, as in
//!
//! rustc main.rs --cfg foo --cfg 'feature="bar"'
-use std::str::FromStr;
+use std::{fmt, str::FromStr};
use cfg::CfgOptions;
@@ -48,3 +48,16 @@ impl Extend<CfgFlag> for CfgOptions {
}
}
}
+
+impl fmt::Display for CfgFlag {
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ match self {
+ CfgFlag::Atom(atom) => f.write_str(atom),
+ CfgFlag::KeyValue { key, value } => {
+ f.write_str(key)?;
+ f.write_str("=")?;
+ f.write_str(value)
+ }
+ }
+ }
+}