Added advanced c-sharp linter

The existing c-charp linter used the --syntax check mode of the mono mcs
compiler only. The new mcsc linter tries to compile the files located in
a directory tree located bejond the specified source directory or the
current one if no source is explicitly specified. The resulting module
target is placed in a temporary file managed by ale.

ale_linters/cs/mcsc.vim

@@ -0,0 +1,86 @@
+let g:ale_cs_mcsc_options = get(g:, 'ale_cs_mcsc_options', '')
+let g:ale_cs_mcsc_source = get(g:,'ale_cs_mcsc_source','')
+let g:ale_cs_mcsc_assembly_path = get(g:,'ale_cs_mcsc_assembly_path',[])
+let g:ale_cs_mcsc_assemblies = get(g:,'ale_cs_mcsc_assemblies',[])
+function! ale_linters#cs#mcsc#GetCommand(buffer) abort
+	let l:path = ale#Var(a:buffer,'cs_mcsc_assembly_path')
+	if !empty(l:path)
+        if type(l:path) == type('')
+            let l:path = '-lib:' . l:path
+        elseif type(l:path) == type([])
+            let l:path = '-lib:' . join(l:path,',')
+        else
+            throw 'assembly path list must be string or list of path strings'
+        endif
+    elseif type(l:path) != type('') 
+        if type(l:path) != type([])
+            throw 'assembly path list must be string or list of path strings'
+        endif
+        let l:path =''
+    endif
+    let l:assemblies = ale#Var(a:buffer,'cs_mcsc_assemblies')
+	if !empty(l:assemblies)
+        if type(l:assemblies) == type('')
+            let l:assemblies = '-r' . l:assemblies
+        elseif type(l:assemblies) == type([])
+            let l:assemblies = '-r:' . join(l:assemblies,',')
+        else
+            throw 'assembly list must be string or list of strings'
+        endif
+    elseif type(l:assemblies) != type('') 
+        if type(l:assemblies) != type([])
+            throw 'assembly list must be string or list of string'
+        endif
+        let l:assemblies =''
+    endif
+	let l:base = ale#Var(a:buffer,'cs_mcsc_source')
+	let l:cwd = getcwd()
+	if isdirectory(l:base)
+		exe 'cd ' . l:base
+	elseif empty(l:base) && ( type(l:base) == type('') )
+		let l:base = '.'
+	else
+		throw 'ale_cs_mcs_source must point to an existing directory or empty string for current'
+	endif
+	let l:out = tempname()
+	call ale#engine#ManageFile(a:buffer,l:out)
+    let l:cmd = 'cd ' . l:base . ';'
+    \    . 'mcs -unsafe' 
+    \    . ' ' . ale#Var(a:buffer, 'cs_mcsc_options')
+    \    . ' ' . l:path
+    \    . ' ' . l:assemblies
+	\    . ' -out:' . l:out
+    \    . ' -t:module'
+    \    . ' "' . join(glob('**/*.cs',v:false,v:true),'" "') . '"'
+	exe 'cd ' . l:cwd
+	return l:cmd
+endfunction
+
+function! ale_linters#cs#mcsc#Handle(buffer, lines) abort
+    " Look for lines like the following.
+    "
+    " Tests.cs(12,29): error CSXXXX: ; expected
+    let l:pattern = '^\(.\+\.cs\)(\(\d\+\),\(\d\+\)): \(.\+\): \(.\+\)'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+		\   'filename': l:match[1],
+        \   'lnum': l:match[2] + 0,
+        \   'col': l:match[3] + 0,
+        \   'text': l:match[4] . ': ' . l:match[5],
+        \   'type': l:match[4] =~# '^error' ? 'E' : 'W',
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('cs',{
+\   'name': 'mcsc',
+\   'output_stream': 'stderr',
+\   'executable': 'mcs',
+\   'command_callback': 'ale_linters#cs#mcsc#GetCommand',
+\   'callback': 'ale_linters#cs#mcsc#Handle',
+\	'lint_file': 1
+\})

doc/ale-cs.txt

@@ -0,0 +1,75 @@
+===============================================================================
+ALE C# Integration                                             *ale-cs-options*
+
+
+===============================================================================
+mcs                 																		           *ale-cs-mcs*
+
+  The mcs linter calls the mono mcs compiler setting the --parse and -unsafe
+  flags.
+
+g:ale_cs_mcs_options                                     *g:ale_cs_mcs_options*
+                                                         *b:ale_cs_mcs_options*
+
+  Type: String
+  Default: `''`
+
+  This variable can be changed to modify flags given to mcs. The options
+  --parse and -unsafe are implicitly set.
+
+
+===============================================================================
+mcsc                                                              *ale-cs-mcsc*
+
+	The mcsc linter uses the mono mcs compiler to generate a temporary module
+  target file (-t:module) including all '*.cs' files contained in the
+	directory by specified by |g:ale_cs_mcsc_source| or |b:ale_cs_mcsc_source|
+  variable and all sub directories. Currently none can be excluded from
+  linting. It uses the assembly directories as specified by 
+	|g:ale_cs_mcsc_assembly_path| or |b:ale_cs_mcsc_assembly_path| and selects
+  the assembly files specified by |g:ale_cs_mcsc_assemblies| or 
+  |b:ale_cs_mcsc_assemblies|. The mcs -unsafe option is set implicitly and has
+  not to be added using |g:ale_cs_mcsc_options| or |b:ale_cs_mcsc_options|
+  variable.
+
+g:ale_cs_mcsc_options                                 *g:ale_cs_mcsc_options*
+                                                      *b:ale_cs_mcsc_options*
+  Type: |String|
+  Default: `''`
+
+  This variable can be set to set further options for example adding packages 
+  (eg.: -pkg:dotnet) with are not added per default.
+
+g:ale_cs_mcsc_source                                   *g:ale_cs_mcsc_source*
+                                                       *b:ale_cs_mcsc_source*
+  Type: |String|
+  Default: `''`
+
+  This variable defines the base path of the directory tree the '*.cs' files
+  should be included into the compilation of the temporary module. If empty
+  the current directory is used.
+
+g:ale_cs_mcsc_assembly_path                     *g:ale_cs_mcsc_assembly_path*
+                                                *b:ale_cs_mcsc_assembly_path*
+  Type: |List|
+  Default: `[]`
+
+  This variable defines a list of absolute or relative path strings pointing
+  to the location of the assembly files (*.dll) to be considered by mcsc
+  linter. If the list is not empty the list will be added to the mcsc command
+  line using the -lib: flag of mcs.
+
+g:ale_cs_mcsc_assemblies                            *g:ale_cs_mcsc_assemblies*
+                                                   *b:ale_cs_mcsc_assemblies*
+  Type: |List|
+  Default: `[]`
+
+  This variable defines a list of assembly files (*.dll) to be considered by
+  the mono mcs compiler when generating the temporary module. If the list is
+  not empty the list of assemblies will be added to the mcsc command
+  line using the -r: flag of mcs. To change the search path mcs uses to 
+  locate the specified assembly files use |g:ale_cs_mcsc_assembly_path| or
+  |b:ale_cs_mcsc_assembly_path| variables
+
+===============================================================================
+  vim:tw=78:ts=2:sts=2:sw=2:ft=help:norl: