Add psalm linter for PHP (#1893)

1 files changed, 28 insertions, 0 deletions

diff --git a/ale_linters/php/psalm.vim b/ale_linters/php/psalm.vim
new file mode 100644
index 00000000..cd20ab81
--- /dev/null
+++ b/ale_linters/php/psalm.vim
@@ -0,0 +1,28 @@
+" Author: richard marmorstein <https://github.com/twitchard>
+" Description: plugin for Psalm, static analyzer for PHP
+
+call ale#Set('php_psalm_executable', 'psalm')
+
+function! ale_linters#php#psalm#Handle(buffer, lines) abort
+    " Matches patterns like the following:
+    let l:pattern = '^.*:\(\d\+\):\(\d\+\):\(\w\+\) - \(.*\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': l:match[1] + 0,
+        \   'text': l:match[4],
+        \   'type': l:match[3][:0] is# 'e' ? 'E' : 'W',
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('php', {
+\   'name': 'psalm',
+\   'command': '%e --diff --output-format=emacs %s',
+\   'executable_callback': ale#VarFunc('php_psalm_executable'),
+\   'callback': 'ale_linters#php#psalm#Handle',
+\   'lint_file': 1,
+\})