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Add compiler guards for mutually-exclusive features.

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This commit is contained in:
Stephen Chung 2021-02-19 15:49:51 +08:00
parent b789c319e7
commit 4e3ab7fa6a
1 changed files with 29 additions and 1 deletions
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30
src/lib.rs
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@ -41,7 +41,7 @@
//! engine.register_fn("compute", compute_something);
//!
//! # #[cfg(not(feature = "no_std"))]
//! # #[cfg(not(target_arch = "wasm32"))]
//! # #[cfg(not(any(target_arch = "wasm32", target_arch = "wasm64")))]
//! assert_eq!(
//! // Evaluate the script, expects a 'bool' return
//! engine.eval_file::<bool>("my_script.rhai".into())?,
@ -61,6 +61,8 @@
#[cfg(feature = "no_std")]
extern crate alloc;
// Internal modules
mod ast;
mod dynamic;
mod engine;
@ -207,3 +209,29 @@ type StaticVec<T> = smallvec::SmallVec<[T; 4]>;
/// Exported under the `internals` feature only.
#[cfg(feature = "internals")]
pub type StaticVec<T> = smallvec::SmallVec<[T; 4]>;
// Compiler guards against mutually-exclusive feature flags
#[cfg(feature = "no_float")]
#[cfg(feature = "f32_float")]
compile_error!("'f32_float' cannot be used with 'no_float'");
#[cfg(feature = "no_std")]
#[cfg(feature = "wasm-bindgen")]
compile_error!("'wasm-bindgen' cannot be used with 'no-std'");
#[cfg(feature = "no_std")]
#[cfg(feature = "stdweb")]
compile_error!("'stdweb' cannot be used with 'no-std'");
#[cfg(any(target_arch = "wasm32", target_arch = "wasm64"))]
#[cfg(feature = "no_std")]
compile_error!("'no_std' cannot be used for WASM target");
#[cfg(not(any(target_arch = "wasm32", target_arch = "wasm64")))]
#[cfg(feature = "wasm-bindgen")]
compile_error!("'wasm-bindgen' should not be used non-WASM target");
#[cfg(not(any(target_arch = "wasm32", target_arch = "wasm64")))]
#[cfg(feature = "stdweb")]
compile_error!("'stdweb' should not be used non-WASM target");