Rearrange nre files

lib/impure/nre/src/private/util.nim

@@ -1,62 +0,0 @@
-import tables
-
-proc fget*[K, V](self: Table[K, V], key: K): V =
-  if self.hasKey(key):
-    return self[key]
-  else:
-    raise newException(KeyError, "Key does not exist in table: " & $key)
-
-const Ident = {'a'..'z', 'A'..'Z', '0'..'9', '_', '\128'..'\255'}
-const StartIdent = Ident - {'0'..'9'}
-
-proc checkNil(arg: string): string =
-  if arg == nil:
-    raise newException(ValueError, "Cannot use nil capture")
-  else:
-    return arg
-
-template formatStr*(howExpr, namegetter, idgetter: expr): expr =
-  let how = howExpr
-  var val = newStringOfCap(how.len)
-  var i = 0
-  var lastNum = 1
-
-  while i < how.len:
-    if how[i] != '$':
-      val.add(how[i])
-      i += 1
-    else:
-      if how[i + 1] == '$':
-        val.add('$')
-        i += 2
-      elif how[i + 1] == '#':
-        var id {.inject.} = lastNum
-        val.add(checkNil(idgetter))
-        lastNum += 1
-        i += 2
-      elif how[i + 1] in {'0'..'9'}:
-        i += 1
-        var id {.inject.} = 0
-        while i < how.len and how[i] in {'0'..'9'}:
-          id += (id * 10) + (ord(how[i]) - ord('0'))
-          i += 1
-        val.add(checkNil(idgetter))
-        lastNum = id + 1
-      elif how[i + 1] in StartIdent:
-        i += 1
-        var name {.inject.} = ""
-        while i < how.len and how[i] in Ident:
-          name.add(how[i])
-          i += 1
-        val.add(checkNil(namegetter))
-      elif how[i + 1] == '{':
-        i += 2
-        var name {.inject.} = ""
-        while i < how.len and how[i] != '}':
-          name.add(how[i])
-          i += 1
-        i += 1
-        val.add(checkNil(namegetter))
-      else:
-        raise newException(Exception, "Syntax error in format string at " & $i)
-  val