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ale/doc/ale-rust.txt
Ben Boeckel 506a8532d0 rust/cargo: add support for a custom target directory 
This can avoid having to wait for ALE or ALE being blocked on other
cargo actions within the same crate.
2020-08-13 10:22:33 -04:00

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===============================================================================
ALE Rust Integration *ale-rust-options*
*ale-integration-rust*
===============================================================================
Integration Information
If Vim does not detect the Rust file type out-of-the-box, you need the runtime
files for Rust distributed in Vim >=8.0.0501 or upstream:
https://github.com/rust-lang/rust.vim
Note that there are several possible linters and fixers for Rust files:
1. rustc -- The Rust compiler is used to check the currently edited file.
So, if your project consists of multiple files, you will get some errors
when you use e.g. a struct which is defined in another file. You can use
|g:ale_rust_ignore_error_codes| to ignore some of these errors.
2. cargo -- If your project is managed by Cargo, the whole project is
checked. That means that all errors are properly shown, but cargo can
only operate on the files written on disk, so errors will not be reported
while you type.
3. rls -- If you have `rls` installed, you might prefer using this linter
over cargo. rls implements the Language Server Protocol for incremental
compilation of Rust code, and can check Rust files while you type. `rls`
requires Rust files to contained in Cargo projects.
4. analyzer -- If you have rust-analyzer installed, you might prefer using
this linter over cargo and rls. rust-analyzer also implements the
Language Server Protocol for incremental compilation of Rust code, and is
the next iteration of rls. rust-analyzer, like rls, requires Rust files
to contained in Cargo projects.
5. rustfmt -- If you have `rustfmt` installed, you can use it as a fixer to
consistently reformat your Rust code.
Only cargo is enabled by default. To switch to using rustc instead of cargo,
configure |g:ale_linters| appropriately: >
" See the help text for the option for more information.
let g:ale_linters = {'rust': ['rustc']}
<
Also note that rustc 1.12. or later is needed.
===============================================================================
analyzer *ale-rust-analyzer*
g:ale_rust_analyzer_executable *g:ale_rust_analyzer_executable*
*b:ale_rust_analyzer_executable*
Type: |String|
Default: `'rust-analyzer'`
This variable can be modified to change the executable path for
`rust-analyzer`.
g:ale_rust_analyzer_config *g:ale_rust_analyzer_config*
*b:ale_rust_analyzer_config*
Type: |Dictionary|
Default: `{}`
Dictionary with configuration settings for rust-analyzer.
===============================================================================
cargo *ale-rust-cargo*
g:ale_rust_cargo_use_check *g:ale_rust_cargo_use_check*
*b:ale_rust_cargo_use_check*
Type: |Number|
Default: `1`
When set to `1`, this option will cause ALE to use `cargo check` instead of
`cargo build` . `cargo check` is supported since version 1.16.0 of Rust.
ALE will never use `cargo check` when the version of `cargo` is less than
0.17.0.
g:ale_rust_cargo_check_all_targets *g:ale_rust_cargo_check_all_targets*
*b:ale_rust_cargo_check_all_targets*
Type: |Number|
Default: `0`
When set to `1`, ALE will set the `--all-targets` option when `cargo check`
is used. See |g:ale_rust_cargo_use_check|,
g:ale_rust_cargo_check_tests *g:ale_rust_cargo_check_tests*
*b:ale_rust_cargo_check_tests*
Type: |Number|
Default: `0`
When set to `1`, ALE will set the `--tests` option when `cargo check`
is used. This allows for linting of tests which are normally excluded.
See |g:ale_rust_cargo_use_check|,
g:ale_rust_cargo_check_examples *g:ale_rust_cargo_check_examples*
*b:ale_rust_cargo_check_examples*
Type: |Number|
Default: `0`
When set to `1`, ALE will set the `--examples` option when `cargo check`
is used. This allows for linting of examples which are normally excluded.
See |g:ale_rust_cargo_use_check|,
g:ale_rust_cargo_default_feature_behavior
*g:ale_rust_cargo_default_feature_behavior*
*b:ale_rust_cargo_default_feature_behavior*
Type: |String|
Default: `default`
When set to `none`, ALE will set the `--no-default-features` option when
invoking `cargo`. Only the features specified in
|g:ale_rust_cargo_include_features| will be included when performing the
lint check.
When set to `default`, ALE will instruct `cargo` to build all default
features specified in the project's `Cargo.toml` file, in addition to
including any additional features defined in
|g:ale_rust_cargo_include_features|.
When set to `all`, ALE will set the `--all-features` option when
invoking `cargo`, which will include all features defined in the project's
`Cargo.toml` file when performing the lint check.
g:ale_rust_cargo_include_features *g:ale_rust_cargo_include_features*
*b:ale_rust_cargo_include_features*
Type: |String|
Default: `''`
When defined, ALE will set the `--features` option when invoking `cargo` to
perform the lint check. See |g:ale_rust_cargo_default_feature_behavior|.
g:ale_rust_cargo_avoid_whole_workspace *g:ale_rust_cargo_avoid_whole_workspace*
*b:ale_rust_cargo_avoid_whole_workspace*
Type: |Number|
Default: `1`
When set to 1, and ALE is used to edit a crate that is part of a Cargo
workspace, avoid building the entire workspace by invoking `cargo` directly
in the crate's directory. Otherwise, behave as usual.
g:ale_rust_cargo_use_clippy
*g:ale_rust_cargo_use_clippy*
*b:ale_rust_cargo_use_clippy*
Type: |Number|
Default: `0`
When set to 1, `cargo clippy` will be used instead of `cargo check` or
`cargo build` as linter.
For details of `cargo clippy`, please visit the following link:
https://github.com/rust-lang-nursery/rust-clippy
Since `cargo clippy` is optional toolchain, it's safer to check whether
`cargo-clippy` is executable as follows:
>
let g:ale_rust_cargo_use_clippy = executable('cargo-clippy')
<
g:ale_rust_cargo_clippy_options
*g:ale_rust_cargo_clippy_options*
*b:ale_rust_cargo_clippy_options*
Type: |String|
Default: `''`
When `cargo clippy` is used, this value will be added to a command line to run
it. This variable is useful when you want to add some extra options which
only `cargo clippy` supports (e.g. `--deny`).
g:ale_rust_cargo_target_dir
*g:ale_rust_cargo_target_dir*
*b:ale_rust_cargo_target_dir*
Type: |String|
Default: `''`
Use a custom target directory when running the commands for ALE. This can
help to avoid "waiting for file lock on build directory" messages when
running `cargo` commands manually while ALE is performing its checks.
===============================================================================
rls *ale-rust-rls*
g:ale_rust_rls_executable *g:ale_rust_rls_executable*
*b:ale_rust_rls_executable*
Type: |String|
Default: `'rls'`
This variable can be modified to change the executable path for `rls`.
g:ale_rust_rls_toolchain *g:ale_rust_rls_toolchain*
*b:ale_rust_rls_toolchain*
Type: |String|
Default: `''`
This option can be set to change the toolchain used for `rls`. Possible
values include `'nightly'`, `'beta'`, `'stable'`, and `''`. When using
option `''`, rls will automatically find the default toolchain set by
rustup. If you want to use `rls` from a specific toolchain version, you may
also use values like `'channel-yyyy-mm-dd-arch-target'` as long as
`'rls +{toolchain_name} -V'` runs correctly in your command line.
The `rls` server will only be started once per executable.
g:ale_rust_rls_config *g:ale_rust_rls_config*
*b:ale_rust_rls_config*
Type: |Dictionary|
Default: `{}`
Dictionary with configuration settings for rls. For example, to force
using clippy as linter: >
{
\ 'rust': {
\ 'clippy_preference': 'on'
\ }
\ }
===============================================================================
rustc *ale-rust-rustc*
g:ale_rust_rustc_options *g:ale_rust_rustc_options*
*b:ale_rust_rustc_options*
Type: |String|
Default: `'-Z no-codegen'`
The variable can be used to change the options passed to `rustc`.
`-Z no-codegen` should only work with nightly builds of Rust. Be careful when
setting the options, as running `rustc` could execute code or generate
binary files.
g:ale_rust_ignore_error_codes *g:ale_rust_ignore_error_codes*
*b:ale_rust_ignore_error_codes*
Type: |List| of |String|s
Default: `[]`
This variable can contain error codes which will be ignored. For example, to
ignore most errors regarding failed imports, put this in your .vimrc
>
let g:ale_rust_ignore_error_codes = ['E0432', 'E0433']
g:ale_rust_ignore_secondary_spans *g:ale_rust_ignore_secondary_spans*
*b:ale_rust_ignore_secondary_spans*
Type: Number
Default: 0
When set to 1, instructs the Rust error repporting to ignore secondary
spans. The problem with secondary spans is that they sometimes appear in
error messages before the main cause of the error, for example: >
1 src/main.rs|98 col 5 error| this function takes 4 parameters but 5
parameters were supplied: defined here
2 src/main.rs|430 col 32 error| this function takes 4 parameters but 5
parameters were supplied: expected 4 parameters
<
This is due to the sorting by line numbers. With this option set to 1,
the 'defined here' span will not be presented.
===============================================================================
rustfmt *ale-rust-rustfmt*
g:ale_rust_rustfmt_options *g:ale_rust_rustfmt_options*
*b:ale_rust_rustfmt_options*
Type: |String|
Default: `''`
This variable can be set to pass additional options to the rustfmt fixer.
===============================================================================
vim:tw=78:ts=2:sts=2:sw=2:ft=help:norl:
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