Add VHDL Support & Newer Verilog Linters (#2229)

* Added VHDL file support with ghdl compiler
* Update ghdl.vim
* Create vcom.vim
* Create xvhdl.vim
* Update xvlog.vim
* Added documentation for VHDL & Verilog linters
* Added tests to VHDL & Verilog linters

1 files changed, 35 insertions, 0 deletions

diff --git a/ale_linters/verilog/xvlog.vim b/ale_linters/verilog/xvlog.vim
new file mode 100644
index 00000000..db2227cd
--- /dev/null
+++ b/ale_linters/verilog/xvlog.vim
@@ -0,0 +1,35 @@
+" Author:      John Gentile <johncgentile17@gmail.com>
+" Description: Adds support for Xilinx Vivado `xvlog` Verilog compiler/checker
+
+call ale#Set('verilog_xvlog_executable', 'xvlog')
+call ale#Set('verilog_xvlog_options', '')
+
+function! ale_linters#verilog#xvlog#GetCommand(buffer) abort
+    return '%e ' . ale#Pad(ale#Var(a:buffer, 'verilog_xvlog_options')) . ' %t'
+endfunction
+
+function! ale_linters#verilog#xvlog#Handle(buffer, lines) abort
+    "Matches patterns like the following:
+    " ERROR: [VRFC 10-1412] syntax error near output [/path/to/file.v:5]
+    let l:pattern = '^ERROR:\s\+\(\[.*\)\[.*:\([0-9]\+\)\]'
+    let l:output = []
+
+    " NOTE: `xvlog` only prints 'INFO' and 'ERROR' messages
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+      call add(l:output, {
+      \   'lnum': l:match[2] + 0,
+      \   'type': 'E',
+      \   'text': l:match[1],
+      \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('verilog', {
+\   'name': 'xvlog',
+\   'output_stream': 'stdout',
+\   'executable_callback': ale#VarFunc('verilog_xvlog_executable'),
+\   'command_callback': 'ale_linters#verilog#xvlog#GetCommand',
+\   'callback': 'ale_linters#verilog#xvlog#Handle',
+\})