cairo support (#4256)

* cairo support

* supported languages txt

* add cairo to ale.txt

ale_linters/cairo/starknet.vim

@@ -0,0 +1,37 @@
+" Author: 0xHyoga <0xHyoga@gmx.com>
+" Description: Report starknet-compile errors in cairo code
+
+call ale#Set('cairo_starknet_executable', 'starknet-compile')
+call ale#Set('cairo_starknet_options', '')
+
+function! ale_linters#cairo#starknet#Handle(buffer, lines) abort
+    " Error always on the first line
+    " e.g ex01.cairo:20:6: Could not find module 'contracts.utils.ex00_base'. Searched in the following paths:
+    let l:pattern = '\v\.cairo:(\d+):(\d+):+ (.*)'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': str2nr(l:match[1]),
+        \   'col': str2nr(l:match[2]),
+        \   'type': 'E',
+        \   'text': l:match[3],
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+function! ale_linters#cairo#starknet#GetCommand(buffer) abort
+    let l:executable = ale#Var(a:buffer, 'cairo_starknet_executable')
+
+    return l:executable . ale#Pad(ale#Var(a:buffer, 'cairo_starknet_options')) . ' %s'
+endfunction
+
+call ale#linter#Define('cairo', {
+\   'name': 'starknet',
+\   'executable': {b -> ale#Var(b, 'cairo_starknet_executable')},
+\   'command': function('ale_linters#cairo#starknet#GetCommand'),
+\   'callback': 'ale_linters#cairo#starknet#Handle',
+\   'output_stream': 'stderr',
+\})

doc/ale-cairo.txt

@@ -0,0 +1,15 @@
+===============================================================================
+ALE Cairo Integration                                       *ale-cairo-options*
+
+
+===============================================================================
+starknet                                                   *ale-cairo-starknet*
+
+g:ale_cairo_starknet_executable               *g:ale_cairo_starknet_executable*
+                                              *b:ale_cairo_starknet_executable*
+
+  Default: `'starknet-compile'`
+
+  Overrides the starknet-compile binary after installing the cairo-language.
+
+  For more information read 'https://starknet.io/docs/quickstart.html'

doc/ale-supported-languages-and-tools.txt

@@ -95,6 +95,8 @@ Notes:
   * `flawfinder`
   * `gcc` (`cc`)
   * `uncrustify`
+* Cairo
+  * `starknet`
 * Chef
   * `cookstyle`
   * `foodcritic`!!

doc/ale.txt

@@ -2775,6 +2775,8 @@ documented in additional help files.
     cspell................................|ale-c-cspell|
     flawfinder............................|ale-c-flawfinder|
     uncrustify............................|ale-c-uncrustify|
+  cairo...................................|ale-cairo-options|
+    starknet..............................|ale-cairo-starknet|
   chef....................................|ale-chef-options|
     cookstyle.............................|ale-chef-cookstyle|
     foodcritic............................|ale-chef-foodcritic|

supported-tools.md

@@ -104,6 +104,8 @@ formatting.
   * [flawfinder](https://www.dwheeler.com/flawfinder/)
   * [gcc](https://gcc.gnu.org/)
   * [uncrustify](https://github.com/uncrustify/uncrustify)
+* Cairo
+  * [starknet](https://starknet.io/docs)
 * Chef
   * [cookstyle](https://docs.chef.io/cookstyle.html)
   * [foodcritic](http://www.foodcritic.io/) :floppy_disk:

test/handler/test_starknet_handler.vader

@@ -0,0 +1,36 @@
+Before:
+  runtime ale_linters/cairo/starknet.vim
+
+After:
+  call ale#linter#Reset()
+
+Execute(The starknet handler should handle error messages correctly):
+  AssertEqual
+  \ [
+  \   {
+  \     'lnum': 3,
+  \     'col': 6,
+  \     'text': 'Could not find module "starkware.cairo.commo.cairo_builtins". Searched in the following paths:',
+  \     'type': 'E',
+  \   },
+  \ ],
+  \ ale_linters#cairo#starknet#Handle(bufnr(''), [
+  \   'contract.cairo:3:6: Could not find module "starkware.cairo.commo.cairo_builtins". Searched in the following paths:',
+  \   'from starkware.cairo.commo.cairo_builtins import HashBuiltin',
+  \   '     ^**********************************^',
+  \ ])
+
+  AssertEqual
+  \ [
+  \   {
+  \     'lnum': 21,
+  \     'col': 2,
+  \     'text': 'Unsupported decorator: "vie".',
+  \     'type': 'E',
+  \   },
+  \ ],
+  \ ale_linters#cairo#starknet#Handle(bufnr(''), [
+  \   'contract.cairo:21:2: Unsupported decorator: "vie".',
+  \   '@vie',
+  \   ' ^*^',
+  \ ])

test/linter/test_starknet.vader

@@ -0,0 +1,13 @@
+Before:
+  call ale#assert#SetUpLinterTest('cairo', 'starknet')
+
+After:
+  call ale#assert#TearDownLinterTest()
+
+Execute(The default command should be correct):
+  AssertLinter 'starknet-compile', 'starknet-compile %s'
+
+Execute(Extra options should be supported):
+  let g:ale_cairo_starknet_options = '--config'
+
+  AssertLinter 'starknet-compile', 'starknet-compile --config %s'