#711 - Make the clangcheck executable configurable

ale_linters/cpp/clangcheck.vim

@@ -1,36 +1,34 @@
 " Author: gagbo <gagbobada@gmail.com>
 " Description: clang-check linter for cpp files
 
-" Set this option to manually set some options for clang-check.
-let g:ale_cpp_clangcheck_options = get(g:, 'ale_cpp_clangcheck_options', '')
+call ale#Set('cpp_clangcheck_executable', 'clang-check')
+call ale#Set('cpp_clangcheck_options', '')
+call ale#Set('c_build_dir', '')
 
-" Set this option to manually point to the build directory for clang-tidy.
-" This will disable all the other clangtidy_options, since compilation
-" flags are contained in the json
-let g:ale_c_build_dir = get(g:, 'ale_c_build_dir', '')
+function! ale_linters#cpp#clangcheck#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'cpp_clangcheck_executable')
+endfunction
 
 function! ale_linters#cpp#clangcheck#GetCommand(buffer) abort
     let l:user_options = ale#Var(a:buffer, 'cpp_clangcheck_options')
-    let l:extra_options = !empty(l:user_options)
-    \   ? l:user_options
-    \   : ''
 
     " Try to find compilation database to link automatically
-    let l:user_build_dir = ale#Var(a:buffer, 'c_build_dir')
-    if empty(l:user_build_dir)
-        let l:user_build_dir = ale#c#FindCompileCommands(a:buffer)
-    endif
-    let l:build_options = !empty(l:user_build_dir)
-    \   ? ' -p ' . ale#Escape(l:user_build_dir)
-    \   : ''
+    let l:build_dir = ale#Var(a:buffer, 'c_build_dir')
 
-    return 'clang-check -analyze ' . '%s' . l:extra_options . l:build_options
+    if empty(l:build_dir)
+        let l:build_dir = ale#c#FindCompileCommands(a:buffer)
+    endif
+
+    return ale#Escape(ale_linters#cpp#clangcheck#GetExecutable(a:buffer))
+    \   . ' -analyze %s'
+    \   . (!empty(l:user_options) ? ' ' . l:user_options : '')
+    \   . (!empty(l:build_dir) ? ' -p ' . ale#Escape(l:build_dir) : '')
 endfunction
 
 call ale#linter#Define('cpp', {
 \   'name': 'clangcheck',
 \   'output_stream': 'stderr',
-\   'executable': 'clang-check',
+\   'executable_callback': 'ale_linters#cpp#clangcheck#GetExecutable',
 \   'command_callback': 'ale_linters#cpp#clangcheck#GetCommand',
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \   'lint_file': 1,

doc/ale-cpp.txt

@@ -63,6 +63,14 @@ Therefore, `clang-check` linter reads the options |g:ale_c_build_dir| and
 overrides |g:ale_c_build_dir_names|.
 
 
+g:ale_cpp_clangcheck_executable               *g:ale_cpp_clangcheck_executable*
+                                              *b:ale_cpp_clangcheck_executable*
+  Type: |String|
+  Default: `'clang-check'`
+
+  This variable can be changed to use a different executable for clangcheck.
+
+
 g:ale_cpp_clangcheck_options                     *g:ale_cpp_clangcheck_options*
                                                  *b:ale_cpp_clangcheck_options*
   Type: |String|

test/command_callback/test_cpp_clangcheck_command_callbacks.vader

@@ -0,0 +1,54 @@
+Before:
+  Save g:ale_cpp_clangcheck_executable
+  Save g:ale_cpp_clangcheck_options
+
+  unlet! g:ale_cpp_clangcheck_executable
+  unlet! b:ale_cpp_clangcheck_executable
+  unlet! g:ale_cpp_clangcheck_options
+  unlet! b:ale_cpp_clangcheck_options
+
+  runtime ale_linters/cpp/clangcheck.vim
+
+After:
+  Restore
+  unlet! b:command_tail
+  unlet! b:ale_cpp_clangcheck_executable
+  unlet! b:ale_cpp_clangcheck_options
+  unlet! b:ale_c_build_dir
+  call ale#linter#Reset()
+
+Execute(The executable should be configurable):
+  AssertEqual 'clang-check', ale_linters#cpp#clangcheck#GetExecutable(bufnr(''))
+
+  let b:ale_cpp_clangcheck_executable = 'foobar'
+
+  AssertEqual 'foobar', ale_linters#cpp#clangcheck#GetExecutable(bufnr(''))
+
+Execute(The executable should be used in the command):
+  AssertEqual
+  \ ale#Escape('clang-check') . ' -analyze %s',
+  \ ale_linters#cpp#clangcheck#GetCommand(bufnr(''))
+
+  let b:ale_cpp_clangcheck_executable = 'foobar'
+
+  AssertEqual
+  \ ale#Escape('foobar') . ' -analyze %s',
+  \ ale_linters#cpp#clangcheck#GetCommand(bufnr(''))
+
+Execute(The options should be configurable):
+  let b:ale_cpp_clangcheck_options = '--something'
+
+  AssertEqual
+  \ ale#Escape('clang-check') . ' -analyze %s --something',
+  \ ale_linters#cpp#clangcheck#GetCommand(bufnr(''))
+
+Execute(The build directory should be used when set):
+  let b:ale_cpp_clangcheck_options = '--something'
+  let b:ale_c_build_dir = '/foo/bar'
+
+  AssertEqual
+  \ ale#Escape('clang-check')
+  \   . ' -analyze %s '
+  \   . '--something -p '
+  \   . ale#Escape('/foo/bar'),
+  \ ale_linters#cpp#clangcheck#GetCommand(bufnr(''))