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use std::error;
use std::fmt;
/// Errors that can occur during code generation.
#[derive(Clone, Debug, PartialEq, Eq)]
pub(crate) enum Error {
/// Tried to generate an opaque blob for a type that did not have a layout.
NoLayoutForOpaqueBlob,
/// Tried to instantiate an opaque template definition, or a template
/// definition that is too difficult for us to understand (like a partial
/// template specialization).
InstantiationOfOpaqueType,
/// Function ABI is not supported.
UnsupportedAbi(&'static str),
/// The pointer type size does not match the target's pointer size.
InvalidPointerSize {
ty_name: String,
ty_size: usize,
ptr_size: usize,
},
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
Error::NoLayoutForOpaqueBlob => {
"Tried to generate an opaque blob, but had no layout.".fmt(f)
}
Error::InstantiationOfOpaqueType => {
"Instantiation of opaque template type or partial template specialization."
.fmt(f)
}
Error::UnsupportedAbi(abi) => {
write!(
f,
"{} ABI is not supported by the configured Rust target.",
abi
)
}
Error::InvalidPointerSize { ty_name, ty_size, ptr_size } => {
write!(f, "The {} pointer type has size {} but the current target's pointer size is {}.", ty_name, ty_size, ptr_size)
}
}
}
}
impl error::Error for Error {}
/// A `Result` of `T` or an error of `bindgen::codegen::error::Error`.
pub(crate) type Result<T> = ::std::result::Result<T, Error>;
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