Add support for rust-analyzer

Fixes #2832

1 files changed, 24 insertions, 0 deletions

diff --git a/ale_linters/rust/analyzer.vim b/ale_linters/rust/analyzer.vim
new file mode 100644
index 00000000..54a7cb1c
--- /dev/null
+++ b/ale_linters/rust/analyzer.vim
@@ -0,0 +1,24 @@
+" Author: Jon Gjengset <jon@thesquareplanet.com>
+" Description: The next generation language server for Rust
+
+call ale#Set('rust_analyzer_executable', 'ra_lsp_server')
+call ale#Set('rust_analyzer_config', {})
+
+function! ale_linters#rust#analyzer#GetCommand(buffer) abort
+    return '%e'
+endfunction
+
+function! ale_linters#rust#analyzer#GetProjectRoot(buffer) abort
+    let l:cargo_file = ale#path#FindNearestFile(a:buffer, 'Cargo.toml')
+
+    return !empty(l:cargo_file) ? fnamemodify(l:cargo_file, ':h') : ''
+endfunction
+
+call ale#linter#Define('rust', {
+\   'name': 'rust-analyzer',
+\   'lsp': 'stdio',
+\   'lsp_config': {b -> ale#Var(b, 'rust_analyzer_config')},
+\   'executable': {b -> ale#Var(b, 'rust_analyzer_executable')},
+\   'command': function('ale_linters#rust#analyzer#GetCommand'),
+\   'project_root': function('ale_linters#rust#analyzer#GetProjectRoot'),
+\})