Nicholas Nethercote 5d9dfbd08f Stop using String for error codes. ... Error codes are integers, but `String` is used everywhere to represent them. Gross! This commit introduces `ErrCode`, an integral newtype for error codes, replacing `String`. It also introduces a constant for every error code, e.g. `E0123`, and removes the `error_code!` macro. The constants are imported wherever used with `use rustc_errors::codes::*`. With the old code, we have three different ways to specify an error code at a use point: ``` error_code!(E0123) // macro call struct_span_code_err!(dcx, span, E0123, "msg"); // bare ident arg to macro call \#[diag(name, code = "E0123")] // string struct Diag; ``` With the new code, they all use the `E0123` constant. ``` E0123 // constant struct_span_code_err!(dcx, span, E0123, "msg"); // constant \#[diag(name, code = E0123)] // constant struct Diag; ``` The commit also changes the structure of the error code definitions: - `rustc_error_codes` now just defines a higher-order macro listing the used error codes and nothing else. - Because that's now the only thing in the `rustc_error_codes` crate, I moved it into the `lib.rs` file and removed the `error_codes.rs` file. - `rustc_errors` uses that macro to define everything, e.g. the error code constants and the `DIAGNOSTIC_TABLES`. This is in its new `codes.rs` file.		2024-01-29 07:41:41 +11:00
..
args.rs	Add support for shell argfiles	2024-01-08 15:25:55 -05:00
lib.rs	Stop using String for error codes.	2024-01-29 07:41:41 +11:00
pretty.rs	rename to verbose-internals	2023-12-19 13:35:37 -05:00
print.rs	Fix ICE on --print=... i/o errors	2023-04-25 08:17:18 -07:00
session_diagnostics.rs	Stop telling people to submit bugs for internal feature ICEs	2023-10-25 23:23:04 +02:00
signal_handler.rs	Clarify arbitrary constants	2023-07-19 00:22:04 -07:00