Added indendation

indent/nim.vim

@@ -0,0 +1,63 @@
+" if exists("b:loaded")
+"   finish
+" endif
+" let b:loaded = 1
+
+setlocal nolisp
+setlocal autoindent
+setlocal indentkeys=!^F,o,O,<:>,0),0],0},=elif
+setlocal indentexpr=NimIndent()
+
+function! Down()
+    return indent(prevnonblank(v:lnum - 1)) - &tabstop
+endfunction
+
+function! Up()
+    return (indent(prevnonblank(v:lnum - 1)) + &tabstop)
+endfunction
+
+function! NimIndent()
+    let line = getline(v:lnum)
+    let prev = prevnonblank(v:lnum - 1)
+    let prevempty = getline(v:lnum - 1) =~ '^\s*$'
+    let prev2empty = getline(v:lnum - 2) =~ '^\s*$'
+    let prevl = getline(prev)
+
+    if prev2empty && prevempty
+        return
+    endif
+
+    if prevl =~ '\([:=\[({]\|and\|or\|not\|xor\|shl\|shr\|div\|mod\|in\|notin\|is\|isnot\|of\)\s*$'
+        return Up()
+    endif
+
+    if prevl =~ '\s*\(import\|type\)'
+        return Up()
+    endif
+
+    if prevl =~ '\s*\(const\|var\|let\)\s*$'
+        return Up()
+    endif
+
+    if prevl =~ '\(object\|enum\|object\|concept\|tuple\)\s*$'
+        return Up()
+    endif
+
+    if prevl =~ '^\(const\|var\|let\).*\s*if\s*.*$'
+        return Up()
+    endif
+
+    if prevl =~ ',\s*$'
+        return -1
+    endif
+
+    if prevempty && prevl =~ '\s*\(result\|return\|break\|continue\|raise\)'
+        return Down()
+    endif
+
+    if prevl =~ '[\])}]\s*$'
+        return Down()
+    endif
+
+    return -1
+endfunction