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rust/compiler/rustc_driver_impl
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Nicholas Nethercote 01e33a3600 Avoid &format("...") calls in error message code. 
Error message all end up passing into a function as an `impl
Into<{D,Subd}iagnosticMessage>`. If an error message is creatd as
`&format("...")` that means we allocate a string (in the `format!`
call), then take a reference, and then clone (allocating again) the
reference to produce the `{D,Subd}iagnosticMessage`, which is silly.

This commit removes the leading `&` from a lot of these cases. This
means the original `String` is moved into the
`{D,Subd}iagnosticMessage`, avoiding the double allocations. This
requires changing some function argument types from `&str` to `String`
(when all arguments are `String`) or `impl
Into<{D,Subd}iagnosticMessage>` (when some arguments are `String` and
some are `&str`).
2023-05-16 17:59:56 +10:00
..
src Avoid &format("...") calls in error message code. 2023-05-16 17:59:56 +10:00
Cargo.toml bump windows crate 0.46 -> 0.48 in workspace 2023-05-09 18:20:13 +03:00
messages.ftl Simplify message paths 2023-03-11 22:51:57 +01:00
README.md Rename rustc_driver to rustc_driver_impl 2023-02-02 07:12:10 +01:00

README.md

The driver crate is effectively the "main" function for the rust compiler. It orchestrates the compilation process and "knits together" the code from the other crates within rustc. This crate itself does not contain any of the "main logic" of the compiler (though it does have some code related to pretty printing or other minor compiler options).

For more information about how the driver works, see the rustc dev guide.