Add terraform, closes #163

indent/terraform.vim

@@ -0,0 +1,48 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'terraform') == -1
+  
+if exists("b:did_indent")
+  finish
+endif
+
+let b:did_indent = 1
+
+setlocal nolisp
+setlocal autoindent
+setlocal indentexpr=TerraformIndent(v:lnum)
+setlocal indentkeys+=<:>,0=},0=)
+
+if exists("*TerraformIndent")
+  finish
+endif
+
+function! TerraformIndent(lnum)
+  " previous non-blank line
+  let prevlnum = prevnonblank(a:lnum-1)
+
+  " beginning of file?
+  if prevlnum == 0
+    return 0
+  endif
+
+  " previous line without comments
+  let prevline = substitute(getline(prevlnum), '//.*$', '', '')
+  let previndent = indent(prevlnum)
+  let thisindent = previndent
+
+  " block open?
+  if prevline =~ '[\[{]\s*$'
+    let thisindent += &sw
+  endif
+
+  " current line without comments
+  let thisline = substitute(getline(a:lnum), '//.*$', '', '')
+
+  " block close?
+  if thisline =~ '^\s*[\]}]'
+    let thisindent -= &sw
+  endif
+
+  return thisindent
+endfunction
+
+endif