Adds --memory-limit support for phpstan (#3973)

* Adds --memmory-limit option for PHPStan linter

* Updates docs for phpstan --memory-limit option.

* Adds Arizard to authors

* Adds test for phpstan memory limit parameter

* Fixes order of parameters in test

* Changes dash to underscore

3 files changed, 23 insertions, 1 deletions

diff --git a/ale_linters/php/phpstan.vim b/ale_linters/php/phpstan.vim
index 58d4dce2..4dce5d5f 100644
--- a/ale_linters/php/phpstan.vim
+++ b/ale_linters/php/phpstan.vim
@@ -1,4 +1,4 @@
-" Author: medains <https://github.com/medains>, ardis <https://github.com/ardisdreelath>
+" Author: medains <https://github.com/medains>, ardis <https://github.com/ardisdreelath>, Arizard <https://github.com/Arizard>
 " Description: phpstan for PHP files
 
 " Set to change the ruleset
@@ -6,6 +6,7 @@ let g:ale_php_phpstan_executable = get(g:, 'ale_php_phpstan_executable', 'phpsta
 let g:ale_php_phpstan_level = get(g:, 'ale_php_phpstan_level', '')
 let g:ale_php_phpstan_configuration = get(g:, 'ale_php_phpstan_configuration', '')
 let g:ale_php_phpstan_autoload = get(g:, 'ale_php_phpstan_autoload', '')
+let g:ale_php_phpstan_memory_limit = get(g:, 'ale_php_phpstan_memory_limit', '')
 call ale#Set('php_phpstan_use_global', get(g:, 'ale_use_global_executables', 0))
 
 function! ale_linters#php#phpstan#GetCommand(buffer, version) abort
@@ -19,6 +20,11 @@ function! ale_linters#php#phpstan#GetCommand(buffer, version) abort
     \   ? ' -a ' . ale#Escape(l:autoload)
     \   : ''
 
+    let l:memory_limit = ale#Var(a:buffer, 'php_phpstan_memory_limit')
+    let l:memory_limit_option = !empty(l:memory_limit)
+    \   ? ' --memory-limit ' . ale#Escape(l:memory_limit)
+    \   : ''
+
     let l:level =  ale#Var(a:buffer, 'php_phpstan_level')
     let l:config_file_exists = ale#path#FindNearestFile(a:buffer, 'phpstan.neon')
     let l:dist_config_file_exists = ale#path#FindNearestFile(a:buffer, 'phpstan.neon.dist')
@@ -41,6 +47,7 @@ function! ale_linters#php#phpstan#GetCommand(buffer, version) abort
     \   . l:configuration_option
     \   . l:autoload_option
     \   . l:level_option
+    \   . l:memory_limit_option
     \   . ' %s'
 endfunction
 
diff --git a/doc/ale-php.txt b/doc/ale-php.txt
index 4ee016fb..1c9822dc 100644
--- a/doc/ale-php.txt
+++ b/doc/ale-php.txt
@@ -187,6 +187,15 @@ g:ale_php_phpstan_autoload                         *g:ale_php_phpstan_autoload*
   This variable sets path to phpstan autoload file.
 
 
+g:ale_php_phpstan_memory_limit                 *g:ale_php_phpstan_memory-limit*
+                                               *b:ale_php_phpstan_memory-limit*
+  Type: |String|
+  Default: `''`
+
+  This variable sets the memory limit for phpstan analysis. This is a string
+  in the same format as `php.ini` accepts, e.g. `128M`, `1G`.
+
+
 ===============================================================================
 psalm                                                           *ale-php-psalm*
 
diff --git a/test/linter/test_phpstan.vader b/test/linter/test_phpstan.vader
index b5b3d3b7..dbeb1bd1 100644
--- a/test/linter/test_phpstan.vader
+++ b/test/linter/test_phpstan.vader
@@ -113,3 +113,9 @@ Execute(Autoload parameter is added to the command):
 
   AssertLinter 'phpstan',
   \ ale#Escape('phpstan') . ' analyze --no-progress --errorFormat json -a ' . ale#Escape('autoload.php') . ' -l ' . ale#Escape('4') . ' %s'
+
+Execute(Memory limit parameter is added to the command):
+  let g:ale_php_phpstan_memory_limit = '500M'
+
+  AssertLinter 'phpstan',
+  \ ale#Escape('phpstan') . ' analyze --no-progress --errorFormat json -l ' . ale#Escape('4') . ' --memory-limit ' . ale#Escape('500M') . ' %s'