Configure phpstan paths

Author: dantleech

README.md

@@ -26,7 +26,18 @@ Using [vim-plug](https://github.com/junegunn/vim-plug):
 
 You can configure the level PHPStan uses. By default the level is 2.
 
-`let g:phpstan_analyse_level = 4` in your `.vimrc` file to change the level to fit your needs.
+```
+let g:phpstan_analyse_level = 4
+```
+
+By default the plugin will look for PHPStan in `./vendor/bin/phpstan`, then
+`./bin/phpstan` and fallback to the global `phpstan` global executable if it exists.
+
+You can override the path with
+
+```
+let g:phpstan_path = '/path//to/phpstan'
+```
 
 # Assumptions
 

autoload/phpstan.vim

@@ -1,6 +1,9 @@
 function! phpstan#PHPStanAnalyse(...)
     let paths = join(a:000, '\ ')
-    let cmd = './vendor/bin/phpstan analyse --errorFormat=raw --no-progress -l' . g:phpstan_analyse_level . ' ' . paths
+
+    let phpstan_path = phpstan#_resolvePhpstanPath()
+
+    let cmd = phpstan_path . ' analyse --errorFormat=raw --no-progress -l' . g:phpstan_analyse_level . ' ' . paths
     let result = system(cmd)
 
     let list = []
@@ -12,3 +15,18 @@ function! phpstan#PHPStanAnalyse(...)
     call setqflist(list)
     execute ':cwindow'
 endfun
+
+function! phpstan#_resolvePhpstanPath()
+    echo g:phpstan_paths
+    for phpstan_path in g:phpstan_paths
+        if filereadable(phpstan_path)
+            return phpstan_path
+        endif
+    endfor
+
+    if !executable('phpstan')
+        throw 'PHPStan doesn't seem to be globally installed or detected locally'
+    endif
+
+    return 'phpstan'
+endfun

plugin/phpstan.vim

@@ -2,8 +2,7 @@ if exists('g:phpstan_plugin_loaded') || &cp
     finish
 endif
 let g:phpstan_plugin_loaded = 1
-
-let g:phpstan_plugin_path = expand('<sfile>:p:h')
+let phpstan_paths = [ './vendor/bin/phpstan', './bin/phpstan' ]
 
 if !exists('g:phpstan_analyse_level')
     let g:phpstan_analyse_level = 2