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Features/no std #171

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merged 2 commits into from
Aug 4, 2021
Merged

Features/no std #171

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65981b7
Added std feature to allow for no_std usage
Jul 30, 2021
907d056
added no_std attr
Jul 30, 2021
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2 changes: 2 additions & 0 deletions strum/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,9 @@ strum_macros = { path = "../strum_macros", version = "0.21" }
travis-ci = { repository = "Peternator7/strum" }

[features]
default = ["std"]
derive = ["strum_macros"]
std = []

[package.metadata.docs.rs]
features = ["derive"]
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5 changes: 5 additions & 0 deletions strum/src/lib.rs
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Expand Up @@ -24,6 +24,9 @@
//! ```
//!


#![cfg_attr(not(feature = "std"), no_std)]

#![cfg_attr(docsrs, feature(doc_cfg))]

// only for documentation purposes
Expand All @@ -36,6 +39,7 @@ pub enum ParseError {
VariantNotFound,
}

#[cfg(feature = "std")]
impl std::fmt::Display for ParseError {
fn fmt(&self, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
// We could use our macro here, but this way we don't take a dependency on the
Expand All @@ -46,6 +50,7 @@ impl std::fmt::Display for ParseError {
}
}

#[cfg(feature = "std")]
impl std::error::Error for ParseError {
fn description(&self) -> &str {
match self {
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