Treat errors as `Send + Sync` to be compatible with `anyhow` crate
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6f9eb82649
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17
src/error.rs
17
src/error.rs
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@ -174,10 +174,7 @@ pub enum Error {
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/// Returning `Err(ExternalError(...))` from a Rust callback will raise the error as a Lua
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/// error. The Rust code that originally invoked the Lua code then receives a `CallbackError`,
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/// from which the original error (and a stack traceback) can be recovered.
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#[cfg(feature = "send")]
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ExternalError(Arc<dyn StdError + Send + Sync>),
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#[cfg(not(feature = "send"))]
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ExternalError(Arc<dyn StdError>),
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}
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/// A specialized `Result` type used by `mlua`'s API.
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@ -277,35 +274,21 @@ impl StdError for Error {
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}
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impl Error {
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#[cfg(feature = "send")]
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pub fn external<T: Into<Box<dyn StdError + Send + Sync>>>(err: T) -> Error {
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Error::ExternalError(err.into().into())
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}
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#[cfg(not(feature = "send"))]
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pub fn external<T: Into<Box<dyn StdError>>>(err: T) -> Error {
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Error::ExternalError(err.into().into())
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}
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}
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pub trait ExternalError {
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fn to_lua_err(self) -> Error;
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}
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#[cfg(feature = "send")]
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impl<E: Into<Box<dyn StdError + Send + Sync>>> ExternalError for E {
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fn to_lua_err(self) -> Error {
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Error::external(self)
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}
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}
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#[cfg(not(feature = "send"))]
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impl<E: Into<Box<dyn StdError>>> ExternalError for E {
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fn to_lua_err(self) -> Error {
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Error::external(self)
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}
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}
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pub trait ExternalResult<T> {
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fn to_lua_err(self) -> Result<T>;
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}
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