third_party_rust_cxx/syntax/error.rs
2020-01-08 08:57:24 -08:00

71 lines
1.9 KiB
Rust

use std::fmt::{self, Display};
#[derive(Copy, Clone)]
pub struct Error {
pub msg: &'static str,
pub label: Option<&'static str>,
pub note: Option<&'static str>,
}
impl Display for Error {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
self.msg.fmt(formatter)
}
}
pub static ERRORS: &[Error] = &[
BOX_CXX_TYPE,
CXXBRIDGE_RESERVED,
CXX_STRING_BY_VALUE,
CXX_TYPE_BY_VALUE,
DOUBLE_UNDERSCORE,
RUST_TYPE_BY_VALUE,
USE_NOT_ALLOWED,
];
pub static BOX_CXX_TYPE: Error = Error {
msg: "Box of a C++ type is not supported yet",
label: None,
note: Some("hint: use UniquePtr<>"),
};
pub static CXXBRIDGE_RESERVED: Error = Error {
msg: "identifiers starting with cxxbridge are reserved",
label: Some("reserved identifier"),
note: Some("identifiers starting with cxxbridge are reserved"),
};
pub static CXX_STRING_BY_VALUE: Error = Error {
msg: "C++ string by value is not supported",
label: None,
note: Some("hint: wrap it in a UniquePtr<>"),
};
pub static CXX_TYPE_BY_VALUE: Error = Error {
msg: "C++ type by value is not supported",
label: None,
note: Some("hint: wrap it in a Box<> or UniquePtr<>"),
};
pub static DOUBLE_UNDERSCORE: Error = Error {
msg: "identifiers containing double underscore are reserved in C++",
label: Some("reserved identifier"),
note: Some("identifiers containing double underscore are reserved in C++"),
};
pub static RUST_TYPE_BY_VALUE: Error = Error {
msg: "opaque Rust type by value is not supported",
label: None,
note: Some("hint: wrap it in a Box<>"),
};
pub static USE_NOT_ALLOWED: Error = Error {
msg: "`use` items are not allowed within cxx bridge",
label: Some("not allowed"),
note: Some(
"`use` items are not allowed within cxx bridge; only types defined\n\
within your bridge, primitive types, or types exported by the cxx\n\
crate may be used",
),
};