Add linter for Inko

This adds a linter for Inko (https://inko-lang.org/). The linter makes
use of Inko's own compiler, and a newly introduced --check flag to only
check for errors; instead of also compiling source code.

1 files changed, 33 insertions, 0 deletions

diff --git a/ale_linters/inko/inko.vim b/ale_linters/inko/inko.vim
new file mode 100644
index 00000000..11558897
--- /dev/null
+++ b/ale_linters/inko/inko.vim
@@ -0,0 +1,33 @@
+" Author: Yorick Peterse <yorick@yorickpeterse.com>
+" Description: linting of Inko source code using the Inko compiler
+
+call ale#Set('inko_inko_executable', 'inko')
+
+function! ale_linters#inko#inko#GetCommand(buffer) abort
+    let l:include = ''
+
+    " Include the tests source directory, but only for test files.
+    if expand('#' . a:buffer . ':p') =~? '\vtests[/\\]test[/\\]'
+        let l:test_dir = ale#path#FindNearestDirectory(a:buffer, 'tests')
+
+        if isdirectory(l:test_dir)
+            let l:include = '--include ' . ale#Escape(l:test_dir)
+        endif
+    endif
+
+    " We use %s instead of %t so the compiler determines the correct module
+    " names for the file being edited. Not doing so may lead to errors in
+    " certain cases.
+    return '%e build --check --format=json'
+    \ . ale#Pad(l:include)
+    \ . ' %s'
+endfunction
+
+call ale#linter#Define('inko', {
+\   'name': 'inko',
+\   'executable': {b -> ale#Var(b, 'inko_inko_executable')},
+\   'command': function('ale_linters#inko#inko#GetCommand'),
+\   'callback': 'ale#handlers#inko#Handle',
+\   'output_stream': 'stderr',
+\   'lint_file': 1
+\})