Aegisub/aegisub/automation/include/moonscript.lua

package.preload['moonscript.base'] = function()
  _G.moon_no_loader = true
  return require("moonscript")
  
end
package.preload['moonscript.compile.statement'] = function()
  local util = require("moonscript.util")
  local data = require("moonscript.data")
  local reversed, unpack = util.reversed, util.unpack
  local ntype
  do
    local _table_0 = require("moonscript.types")
    ntype = _table_0.ntype
  end
  local concat, insert = table.concat, table.insert
  local statement_compilers = {
    raw = function(self, node)
      return self:add(node[2])
    end,
    lines = function(self, node)
      local _list_0 = node[2]
      for _index_0 = 1, #_list_0 do
        local line = _list_0[_index_0]
        self:add(line)
      end
    end,
    declare = function(self, node)
      local names = node[2]
      local undeclared = self:declare(names)
      if #undeclared > 0 then
        do
          local _with_0 = self:line("local ")
          _with_0:append_list((function()
            local _accum_0 = { }
            local _len_0 = 1
            local _list_0 = undeclared
            for _index_0 = 1, #_list_0 do
              local name = _list_0[_index_0]
              _accum_0[_len_0] = self:name(name)
              _len_0 = _len_0 + 1
            end
            return _accum_0
          end)(), ", ")
          return _with_0
        end
      end
    end,
    declare_with_shadows = function(self, node)
      local names = node[2]
      self:declare(names)
      do
        local _with_0 = self:line("local ")
        _with_0:append_list((function()
          local _accum_0 = { }
          local _len_0 = 1
          local _list_0 = names
          for _index_0 = 1, #_list_0 do
            local name = _list_0[_index_0]
            _accum_0[_len_0] = self:name(name)
            _len_0 = _len_0 + 1
          end
          return _accum_0
        end)(), ", ")
        return _with_0
      end
    end,
    assign = function(self, node)
      local _, names, values = unpack(node)
      local undeclared = self:declare(names)
      local declare = "local " .. concat(undeclared, ", ")
      local has_fndef = false
      local i = 1
      while i <= #values do
        if ntype(values[i]) == "fndef" then
          has_fndef = true
        end
        i = i + 1
      end
      do
        local _with_0 = self:line()
        if #undeclared == #names and not has_fndef then
          _with_0:append(declare)
        else
          if #undeclared > 0 then
            self:add(declare)
          end
          _with_0:append_list((function()
            local _accum_0 = { }
            local _len_0 = 1
            local _list_0 = names
            for _index_0 = 1, #_list_0 do
              local name = _list_0[_index_0]
              _accum_0[_len_0] = self:value(name)
              _len_0 = _len_0 + 1
            end
            return _accum_0
          end)(), ", ")
        end
        _with_0:append(" = ")
        _with_0:append_list((function()
          local _accum_0 = { }
          local _len_0 = 1
          local _list_0 = values
          for _index_0 = 1, #_list_0 do
            local v = _list_0[_index_0]
            _accum_0[_len_0] = self:value(v)
            _len_0 = _len_0 + 1
          end
          return _accum_0
        end)(), ", ")
        return _with_0
      end
    end,
    ["return"] = function(self, node)
      return self:line("return ", (function()
        if node[2] ~= "" then
          return self:value(node[2])
        end
      end)())
    end,
    ["break"] = function(self, node)
      return "break"
    end,
    ["if"] = function(self, node)
      local cond, block = node[2], node[3]
      local root
      do
        local _with_0 = self:block(self:line("if ", self:value(cond), " then"))
        _with_0:stms(block)
        root = _with_0
      end
      local current = root
      local add_clause
      add_clause = function(clause)
        local type = clause[1]
        local i = 2
        local next
        if type == "else" then
          next = self:block("else")
        else
          i = i + 1
          next = self:block(self:line("elseif ", self:value(clause[2]), " then"))
        end
        next:stms(clause[i])
        current.next = next
        current = next
      end
      local _list_0 = node
      for _index_0 = 4, #_list_0 do
        cond = _list_0[_index_0]
        add_clause(cond)
      end
      return root
    end,
    ["repeat"] = function(self, node)
      local cond, block = unpack(node, 2)
      do
        local _with_0 = self:block("repeat", self:line("until ", self:value(cond)))
        _with_0:stms(block)
        return _with_0
      end
    end,
    ["while"] = function(self, node)
      local _, cond, block = unpack(node)
      do
        local _with_0 = self:block(self:line("while ", self:value(cond), " do"))
        _with_0:stms(block)
        return _with_0
      end
    end,
    ["for"] = function(self, node)
      local _, name, bounds, block = unpack(node)
      local loop = self:line("for ", self:name(name), " = ", self:value({
        "explist",
        unpack(bounds)
      }), " do")
      do
        local _with_0 = self:block(loop)
        _with_0:declare({
          name
        })
        _with_0:stms(block)
        return _with_0
      end
    end,
    foreach = function(self, node)
      local _, names, exps, block = unpack(node)
      local loop
      do
        local _with_0 = self:line()
        _with_0:append("for ")
        loop = _with_0
      end
      do
        local _with_0 = self:block(loop)
        loop:append_list((function()
          local _accum_0 = { }
          local _len_0 = 1
          local _list_0 = names
          for _index_0 = 1, #_list_0 do
            local name = _list_0[_index_0]
            _accum_0[_len_0] = _with_0:name(name, false)
            _len_0 = _len_0 + 1
          end
          return _accum_0
        end)(), ", ")
        loop:append(" in ")
        loop:append_list((function()
          local _accum_0 = { }
          local _len_0 = 1
          local _list_0 = exps
          for _index_0 = 1, #_list_0 do
            local exp = _list_0[_index_0]
            _accum_0[_len_0] = self:value(exp)
            _len_0 = _len_0 + 1
          end
          return _accum_0
        end)(), ",")
        loop:append(" do")
        _with_0:declare(names)
        _with_0:stms(block)
        return _with_0
      end
    end,
    export = function(self, node)
      local _, names = unpack(node)
      if type(names) == "string" then
        if names == "*" then
          self.export_all = true
        elseif names == "^" then
          self.export_proper = true
        end
      else
        self:declare(names)
      end
      return nil
    end,
    run = function(self, code)
      code:call(self)
      return nil
    end,
    group = function(self, node)
      return self:stms(node[2])
    end,
    ["do"] = function(self, node)
      do
        local _with_0 = self:block()
        _with_0:stms(node[2])
        return _with_0
      end
    end
  }
  return {
    statement_compilers = statement_compilers
  }
  
end
package.preload['moonscript.compile.value'] = function()
  local util = require("moonscript.util")
  local data = require("moonscript.data")
  local ntype
  do
    local _table_0 = require("moonscript.types")
    ntype = _table_0.ntype
  end
  local user_error
  do
    local _table_0 = require("moonscript.errors")
    user_error = _table_0.user_error
  end
  local concat, insert = table.concat, table.insert
  local unpack = util.unpack
  local table_delim = ","
  local string_chars = {
    ["\r"] = "\\r",
    ["\n"] = "\\n"
  }
  local value_compilers = {
    exp = function(self, node)
      local _comp
      _comp = function(i, value)
        if i % 2 == 1 and value == "!=" then
          value = "~="
        end
        return self:value(value)
      end
      do
        local _with_0 = self:line()
        _with_0:append_list((function()
          local _accum_0 = { }
          local _len_0 = 1
          for i, v in ipairs(node) do
            if i > 1 then
              _accum_0[_len_0] = _comp(i, v)
              _len_0 = _len_0 + 1
            end
          end
          return _accum_0
        end)(), " ")
        return _with_0
      end
    end,
    explist = function(self, node)
      do
        local _with_0 = self:line()
        _with_0:append_list((function()
          local _accum_0 = { }
          local _len_0 = 1
          local _list_0 = node
          for _index_0 = 2, #_list_0 do
            local v = _list_0[_index_0]
            _accum_0[_len_0] = self:value(v)
            _len_0 = _len_0 + 1
          end
          return _accum_0
        end)(), ", ")
        return _with_0
      end
    end,
    parens = function(self, node)
      return self:line("(", self:value(node[2]), ")")
    end,
    string = function(self, node)
      local _, delim, inner = unpack(node)
      local end_delim = delim:gsub("%[", "]")
      if delim == "'" or delim == '"' then
        inner = inner:gsub("[\r\n]", string_chars)
      end
      return delim .. inner .. end_delim
    end,
    chain = function(self, node)
      local callee = node[2]
      if callee == -1 then
        callee = self:get("scope_var")
        if not callee then
          user_error("Short-dot syntax must be called within a with block")
        end
      end
      local sup = self:get("super")
      if callee == "super" and sup then
        return self:value(sup(self, node))
      end
      local chain_item
      chain_item = function(node)
        local t, arg = unpack(node)
        if t == "call" then
          return "(", self:values(arg), ")"
        elseif t == "index" then
          return "[", self:value(arg), "]"
        elseif t == "dot" then
          return ".", tostring(arg)
        elseif t == "colon" then
          return ":", arg, chain_item(node[3])
        elseif t == "colon_stub" then
          return user_error("Uncalled colon stub")
        else
          return error("Unknown chain action: " .. t)
        end
      end
      local t = ntype(callee)
      if (t == "self" or t == "self_class") and node[3] and ntype(node[3]) == "call" then
        callee[1] = t .. "_colon"
      end
      local callee_value = self:value(callee)
      if ntype(callee) == "exp" then
        callee_value = self:line("(", callee_value, ")")
      end
      local actions
      do
        local _with_0 = self:line()
        local _list_0 = node
        for _index_0 = 3, #_list_0 do
          local action = _list_0[_index_0]
          _with_0:append(chain_item(action))
        end
        actions = _with_0
      end
      return self:line(callee_value, actions)
    end,
    fndef = function(self, node)
      local _, args, whitelist, arrow, block = unpack(node)
      local default_args = { }
      local self_args = { }
      local arg_names = (function()
        local _accum_0 = { }
        local _len_0 = 1
        local _list_0 = args
        for _index_0 = 1, #_list_0 do
          local arg = _list_0[_index_0]
          local name, default_value = unpack(arg)
          if type(name) == "string" then
            name = name
          else
            if name[1] == "self" or name[1] == "self_class" then
              insert(self_args, name)
            end
            name = name[2]
          end
          if default_value then
            insert(default_args, arg)
          end
          local _value_0 = name
          _accum_0[_len_0] = _value_0
          _len_0 = _len_0 + 1
        end
        return _accum_0
      end)()
      if arrow == "fat" then
        insert(arg_names, 1, "self")
      end
      do
        local _with_0 = self:block()
        if #whitelist > 0 then
          _with_0:whitelist_names(whitelist)
        end
        local _list_0 = arg_names
        for _index_0 = 1, #_list_0 do
          local name = _list_0[_index_0]
          _with_0:put_name(name)
        end
        local _list_1 = default_args
        for _index_0 = 1, #_list_1 do
          local default = _list_1[_index_0]
          local name, value = unpack(default)
          if type(name) == "table" then
            name = name[2]
          end
          _with_0:stm({
            'if',
            {
              'exp',
              name,
              '==',
              'nil'
            },
            {
              {
                'assign',
                {
                  name
                },
                {
                  value
                }
              }
            }
          })
        end
        local self_arg_values = (function()
          local _accum_0 = { }
          local _len_0 = 1
          local _list_2 = self_args
          for _index_0 = 1, #_list_2 do
            local arg = _list_2[_index_0]
            _accum_0[_len_0] = arg[2]
            _len_0 = _len_0 + 1
          end
          return _accum_0
        end)()
        if #self_args > 0 then
          _with_0:stm({
            "assign",
            self_args,
            self_arg_values
          })
        end
        _with_0:stms(block)
        if #args > #arg_names then
          arg_names = (function()
            local _accum_0 = { }
            local _len_0 = 1
            local _list_2 = args
            for _index_0 = 1, #_list_2 do
              local arg = _list_2[_index_0]
              _accum_0[_len_0] = arg[1]
              _len_0 = _len_0 + 1
            end
            return _accum_0
          end)()
        end
        _with_0.header = "function(" .. concat(arg_names, ", ") .. ")"
        return _with_0
      end
    end,
    table = function(self, node)
      local _, items = unpack(node)
      do
        local _with_0 = self:block("{", "}")
        local format_line
        format_line = function(tuple)
          if #tuple == 2 then
            local key, value = unpack(tuple)
            if ntype(key) == "key_literal" and data.lua_keywords[key[2]] then
              key = {
                "string",
                '"',
                key[2]
              }
            end
            local assign
            if ntype(key) == "key_literal" then
              assign = key[2]
            else
              assign = self:line("[", _with_0:value(key), "]")
            end
            _with_0:set("current_block", key)
            local out = self:line(assign, " = ", _with_0:value(value))
            _with_0:set("current_block", nil)
            return out
          else
            return self:line(_with_0:value(tuple[1]))
          end
        end
        if items then
          local count = #items
          for i, tuple in ipairs(items) do
            local line = format_line(tuple)
            if not (count == i) then
              line:append(table_delim)
            end
            _with_0:add(line)
          end
        end
        return _with_0
      end
    end,
    minus = function(self, node)
      return self:line("-", self:value(node[2]))
    end,
    temp_name = function(self, node, ...)
      return node:get_name(self, ...)
    end,
    number = function(self, node)
      return node[2]
    end,
    length = function(self, node)
      return self:line("#", self:value(node[2]))
    end,
    ["not"] = function(self, node)
      return self:line("not ", self:value(node[2]))
    end,
    self = function(self, node)
      return "self." .. self:value(node[2])
    end,
    self_class = function(self, node)
      return "self.__class." .. self:value(node[2])
    end,
    self_colon = function(self, node)
      return "self:" .. self:value(node[2])
    end,
    self_class_colon = function(self, node)
      return "self.__class:" .. self:value(node[2])
    end,
    raw_value = function(self, value)
      local sup = self:get("super")
      if value == "super" and sup then
        return self:value(sup(self))
      end
      if value == "..." then
        self:send("varargs")
      end
      return tostring(value)
    end
  }
  return {
    value_compilers = value_compilers
  }
  
end
package.preload['moonscript.compile'] = function()
  local util = require("moonscript.util")
  local dump = require("moonscript.dump")
  local transform = require("moonscript.transform")
  local NameProxy, LocalName
  do
    local _table_0 = require("moonscript.transform.names")
    NameProxy, LocalName = _table_0.NameProxy, _table_0.LocalName
  end
  local Set
  do
    local _table_0 = require("moonscript.data")
    Set = _table_0.Set
  end
  local ntype, has_value
  do
    local _table_0 = require("moonscript.types")
    ntype, has_value = _table_0.ntype, _table_0.has_value
  end
  local statement_compilers
  do
    local _table_0 = require("moonscript.compile.statement")
    statement_compilers = _table_0.statement_compilers
  end
  local value_compilers
  do
    local _table_0 = require("moonscript.compile.value")
    value_compilers = _table_0.value_compilers
  end
  local concat, insert = table.concat, table.insert
  local pos_to_line, get_closest_line, trim, unpack = util.pos_to_line, util.get_closest_line, util.trim, util.unpack
  local mtype = util.moon.type
  local indent_char = "  "
  local Line, DelayedLine, Lines, Block, RootBlock
  do
    local _parent_0 = nil
    local _base_0 = {
      mark_pos = function(self, pos, line)
        if line == nil then
          line = #self
        end
        if not (self.posmap[line]) then
          self.posmap[line] = pos
        end
      end,
      add = function(self, item)
        local _exp_0 = mtype(item)
        if Line == _exp_0 then
          item:render(self)
        elseif Block == _exp_0 then
          item:render(self)
        else
          self[#self + 1] = item
        end
        return self
      end,
      flatten_posmap = function(self, line_no, out)
        if line_no == nil then
          line_no = 0
        end
        if out == nil then
          out = { }
        end
        local posmap = self.posmap
        for i, l in ipairs(self) do
          local _exp_0 = mtype(l)
          if "string" == _exp_0 or DelayedLine == _exp_0 then
            line_no = line_no + 1
            out[line_no] = posmap[i]
          elseif Lines == _exp_0 then
            local _
            _, line_no = l:flatten_posmap(line_no, out)
          else
            error("Unknown item in Lines: " .. tostring(l))
          end
        end
        return out, line_no
      end,
      flatten = function(self, indent, buffer)
        if indent == nil then
          indent = nil
        end
        if buffer == nil then
          buffer = { }
        end
        for i = 1, #self do
          local l = self[i]
          local t = mtype(l)
          if t == DelayedLine then
            l = l:render()
            t = "string"
          end
          local _exp_0 = t
          if "string" == _exp_0 then
            if indent then
              insert(buffer, indent)
            end
            insert(buffer, l)
            if "string" == type(self[i + 1]) then
              local lc = l:sub(-1)
              if (lc == ")" or lc == "]") and self[i + 1]:sub(1, 1) == "(" then
                insert(buffer, ";")
              end
            end
            insert(buffer, "\n")
            local last = l
          elseif Lines == _exp_0 then
            l:flatten(indent and indent .. indent_char or indent_char, buffer)
          else
            error("Unknown item in Lines: " .. tostring(l))
          end
        end
        return buffer
      end,
      __tostring = function(self)
        local strip
        strip = function(t)
          if "table" == type(t) then
            return (function()
              local _accum_0 = { }
              local _len_0 = 1
              local _list_0 = t
              for _index_0 = 1, #_list_0 do
                local v = _list_0[_index_0]
                _accum_0[_len_0] = strip(v)
                _len_0 = _len_0 + 1
              end
              return _accum_0
            end)()
          else
            return t
          end
        end
        return "Lines<" .. tostring(util.dump(strip(self)):sub(1, -2)) .. ">"
      end
    }
    _base_0.__index = _base_0
    if _parent_0 then
      setmetatable(_base_0, _parent_0.__base)
    end
    local _class_0 = setmetatable({
      __init = function(self)
        self.posmap = { }
      end,
      __base = _base_0,
      __name = "Lines",
      __parent = _parent_0
    }, {
      __index = function(cls, name)
        local val = rawget(_base_0, name)
        if val == nil and _parent_0 then
          return _parent_0[name]
        else
          return val
        end
      end,
      __call = function(cls, ...)
        local _self_0 = setmetatable({}, _base_0)
        cls.__init(_self_0, ...)
        return _self_0
      end
    })
    _base_0.__class = _class_0
    if _parent_0 and _parent_0.__inherited then
      _parent_0.__inherited(_parent_0, _class_0)
    end
    Lines = _class_0
  end
  do
    local _parent_0 = nil
    local _base_0 = {
      pos = nil,
      _append_single = function(self, item)
        if Line == mtype(item) then
          if not (self.pos) then
            self.pos = item.pos
          end
          local _list_0 = item
          for _index_0 = 1, #_list_0 do
            local value = _list_0[_index_0]
            self:_append_single(value)
          end
        else
          insert(self, item)
        end
        return nil
      end,
      append_list = function(self, items, delim)
        for i = 1, #items do
          self:_append_single(items[i])
          if i < #items then
            insert(self, delim)
          end
        end
        return nil
      end,
      append = function(self, ...)
        local _list_0 = {
          ...
        }
        for _index_0 = 1, #_list_0 do
          local item = _list_0[_index_0]
          self:_append_single(item)
        end
        return nil
      end,
      render = function(self, buffer)
        local current = { }
        local add_current
        add_current = function()
          buffer:add(concat(current))
          return buffer:mark_pos(self.pos)
        end
        local _list_0 = self
        for _index_0 = 1, #_list_0 do
          local chunk = _list_0[_index_0]
          local _exp_0 = mtype(chunk)
          if Block == _exp_0 then
            local _list_1 = chunk:render(Lines())
            for _index_1 = 1, #_list_1 do
              local block_chunk = _list_1[_index_1]
              if "string" == type(block_chunk) then
                insert(current, block_chunk)
              else
                add_current()
                buffer:add(block_chunk)
                current = { }
              end
            end
          else
            insert(current, chunk)
          end
        end
        if #current > 0 then
          add_current()
        end
        return buffer
      end,
      __tostring = function(self)
        return "Line<" .. tostring(util.dump(self):sub(1, -2)) .. ">"
      end
    }
    _base_0.__index = _base_0
    if _parent_0 then
      setmetatable(_base_0, _parent_0.__base)
    end
    local _class_0 = setmetatable({
      __init = function(self, ...)
        if _parent_0 then
          return _parent_0.__init(self, ...)
        end
      end,
      __base = _base_0,
      __name = "Line",
      __parent = _parent_0
    }, {
      __index = function(cls, name)
        local val = rawget(_base_0, name)
        if val == nil and _parent_0 then
          return _parent_0[name]
        else
          return val
        end
      end,
      __call = function(cls, ...)
        local _self_0 = setmetatable({}, _base_0)
        cls.__init(_self_0, ...)
        return _self_0
      end
    })
    _base_0.__class = _class_0
    if _parent_0 and _parent_0.__inherited then
      _parent_0.__inherited(_parent_0, _class_0)
    end
    Line = _class_0
  end
  do
    local _parent_0 = nil
    local _base_0 = {
      prepare = function() end,
      render = function(self)
        self:prepare()
        return concat(self)
      end
    }
    _base_0.__index = _base_0
    if _parent_0 then
      setmetatable(_base_0, _parent_0.__base)
    end
    local _class_0 = setmetatable({
      __init = function(self, fn)
        self.prepare = fn
      end,
      __base = _base_0,
      __name = "DelayedLine",
      __parent = _parent_0
    }, {
      __index = function(cls, name)
        local val = rawget(_base_0, name)
        if val == nil and _parent_0 then
          return _parent_0[name]
        else
          return val
        end
      end,
      __call = function(cls, ...)
        local _self_0 = setmetatable({}, _base_0)
        cls.__init(_self_0, ...)
        return _self_0
      end
    })
    _base_0.__class = _class_0
    if _parent_0 and _parent_0.__inherited then
      _parent_0.__inherited(_parent_0, _class_0)
    end
    DelayedLine = _class_0
  end
  do
    local _parent_0 = nil
    local _base_0 = {
      header = "do",
      footer = "end",
      export_all = false,
      export_proper = false,
      __tostring = function(self)
        local h
        if "string" == type(self.header) then
          h = self.header
        else
          h = unpack(self.header:render({ }))
        end
        return "Block<" .. tostring(h) .. "> <- " .. tostring(self.parent)
      end,
      set = function(self, name, value)
        self._state[name] = value
      end,
      get = function(self, name)
        return self._state[name]
      end,
      get_current = function(self, name)
        return rawget(self._state, name)
      end,
      listen = function(self, name, fn)
        self._listeners[name] = fn
      end,
      unlisten = function(self, name)
        self._listeners[name] = nil
      end,
      send = function(self, name, ...)
        do
          local fn = self._listeners[name]
          if fn then
            return fn(self, ...)
          end
        end
      end,
      declare = function(self, names)
        local undeclared = (function()
          local _accum_0 = { }
          local _len_0 = 1
          local _list_0 = names
          for _index_0 = 1, #_list_0 do
            local _continue_0 = false
            repeat
              local name = _list_0[_index_0]
              local is_local = false
              local real_name
              local _exp_0 = mtype(name)
              if LocalName == _exp_0 then
                is_local = true
                real_name = name:get_name(self)
              elseif NameProxy == _exp_0 then
                real_name = name:get_name(self)
              elseif "string" == _exp_0 then
                real_name = name
              end
              if not (is_local or real_name and not self:has_name(real_name, true)) then
                _continue_0 = true
                break
              end
              self:put_name(real_name)
              if self:name_exported(real_name) then
                _continue_0 = true
                break
              end
              local _value_0 = real_name
              _accum_0[_len_0] = _value_0
              _len_0 = _len_0 + 1
              _continue_0 = true
            until true
            if not _continue_0 then
              break
            end
          end
          return _accum_0
        end)()
        return undeclared
      end,
      whitelist_names = function(self, names)
        self._name_whitelist = Set(names)
      end,
      name_exported = function(self, name)
        if self.export_all then
          return true
        end
        if self.export_proper and name:match("^%u") then
          return true
        end
      end,
      put_name = function(self, name, ...)
        local value = ...
        if select("#", ...) == 0 then
          value = true
        end
        if NameProxy == mtype(name) then
          name = name:get_name(self)
        end
        self._names[name] = value
      end,
      has_name = function(self, name, skip_exports)
        if not skip_exports and self:name_exported(name) then
          return true
        end
        local yes = self._names[name]
        if yes == nil and self.parent then
          if not self._name_whitelist or self._name_whitelist[name] then
            return self.parent:has_name(name, true)
          end
        else
          return yes
        end
      end,
      free_name = function(self, prefix, dont_put)
        prefix = prefix or "moon"
        local searching = true
        local name, i = nil, 0
        while searching do
          name = concat({
            "",
            prefix,
            i
          }, "_")
          i = i + 1
          searching = self:has_name(name, true)
        end
        if not dont_put then
          self:put_name(name)
        end
        return name
      end,
      init_free_var = function(self, prefix, value)
        local name = self:free_name(prefix, true)
        self:stm({
          "assign",
          {
            name
          },
          {
            value
          }
        })
        return name
      end,
      add = function(self, item)
        self._lines:add(item)
        return item
      end,
      render = function(self, buffer)
        buffer:add(self.header)
        buffer:mark_pos(self.pos)
        if self.next then
          buffer:add(self._lines)
          self.next:render(buffer)
        else
          if #self._lines == 0 and "string" == type(buffer[#buffer]) then
            buffer[#buffer] = buffer[#buffer] .. (" " .. (unpack(Lines():add(self.footer))))
          else
            buffer:add(self._lines)
            buffer:add(self.footer)
            buffer:mark_pos(self.pos)
          end
        end
        return buffer
      end,
      block = function(self, header, footer)
        return Block(self, header, footer)
      end,
      line = function(self, ...)
        do
          local _with_0 = Line()
          _with_0:append(...)
          return _with_0
        end
      end,
      is_stm = function(self, node)
        return statement_compilers[ntype(node)] ~= nil
      end,
      is_value = function(self, node)
        local t = ntype(node)
        return value_compilers[t] ~= nil or t == "value"
      end,
      name = function(self, node, ...)
        return self:value(node, ...)
      end,
      value = function(self, node, ...)
        node = self.transform.value(node)
        local action
        if type(node) ~= "table" then
          action = "raw_value"
        else
          action = node[1]
        end
        local fn = value_compilers[action]
        if not fn then
          error("Failed to compile value: " .. dump.value(node))
        end
        local out = fn(self, node, ...)
        if type(node) == "table" and node[-1] then
          if type(out) == "string" then
            do
              local _with_0 = Line()
              _with_0:append(out)
              out = _with_0
            end
          end
          out.pos = node[-1]
        end
        return out
      end,
      values = function(self, values, delim)
        delim = delim or ', '
        do
          local _with_0 = Line()
          _with_0:append_list((function()
            local _accum_0 = { }
            local _len_0 = 1
            local _list_0 = values
            for _index_0 = 1, #_list_0 do
              local v = _list_0[_index_0]
              _accum_0[_len_0] = self:value(v)
              _len_0 = _len_0 + 1
            end
            return _accum_0
          end)(), delim)
          return _with_0
        end
      end,
      stm = function(self, node, ...)
        if not node then
          return 
        end
        node = self.transform.statement(node)
        local result
        do
          local fn = statement_compilers[ntype(node)]
          if fn then
            result = fn(self, node, ...)
          else
            if has_value(node) then
              result = self:stm({
                "assign",
                {
                  "_"
                },
                {
                  node
                }
              })
            else
              result = self:value(node)
            end
          end
        end
        if result then
          if type(node) == "table" and type(result) == "table" and node[-1] then
            result.pos = node[-1]
          end
          self:add(result)
        end
        return nil
      end,
      stms = function(self, stms, ret)
        if ret then
          error("deprecated stms call, use transformer")
        end
        local current_stms, current_stm_i
        do
          local _obj_0 = self
          current_stms, current_stm_i = _obj_0.current_stms, _obj_0.current_stm_i
        end
        self.current_stms = stms
        for i = 1, #stms do
          self.current_stm_i = i
          self:stm(stms[i])
        end
        self.current_stms = current_stms
        self.current_stm_i = current_stm_i
        return nil
      end,
      splice = function(self, fn)
        local lines = {
          "lines",
          self._lines
        }
        self._lines = Lines()
        return self:stms(fn(lines))
      end
    }
    _base_0.__index = _base_0
    if _parent_0 then
      setmetatable(_base_0, _parent_0.__base)
    end
    local _class_0 = setmetatable({
      __init = function(self, parent, header, footer)
        self.parent, self.header, self.footer = parent, header, footer
        self._lines = Lines()
        self._names = { }
        self._state = { }
        self._listeners = { }
        do
          local _with_0 = transform
          self.transform = {
            value = _with_0.Value:bind(self),
            statement = _with_0.Statement:bind(self)
          }
        end
        if self.parent then
          self.root = self.parent.root
          self.indent = self.parent.indent + 1
          setmetatable(self._state, {
            __index = self.parent._state
          })
          return setmetatable(self._listeners, {
            __index = self.parent._listeners
          })
        else
          self.indent = 0
        end
      end,
      __base = _base_0,
      __name = "Block",
      __parent = _parent_0
    }, {
      __index = function(cls, name)
        local val = rawget(_base_0, name)
        if val == nil and _parent_0 then
          return _parent_0[name]
        else
          return val
        end
      end,
      __call = function(cls, ...)
        local _self_0 = setmetatable({}, _base_0)
        cls.__init(_self_0, ...)
        return _self_0
      end
    })
    _base_0.__class = _class_0
    if _parent_0 and _parent_0.__inherited then
      _parent_0.__inherited(_parent_0, _class_0)
    end
    Block = _class_0
  end
  do
    local _parent_0 = Block
    local _base_0 = {
      __tostring = function(self)
        return "RootBlock<>"
      end,
      root_stms = function(self, stms)
        if not (self.options.implicitly_return_root == false) then
          stms = transform.Statement.transformers.root_stms(self, stms)
        end
        return self:stms(stms)
      end,
      render = function(self)
        local buffer = self._lines:flatten()
        if buffer[#buffer] == "\n" then
          buffer[#buffer] = nil
        end
        return table.concat(buffer)
      end
    }
    _base_0.__index = _base_0
    if _parent_0 then
      setmetatable(_base_0, _parent_0.__base)
    end
    local _class_0 = setmetatable({
      __init = function(self, options)
        self.options = options
        self.root = self
        return _parent_0.__init(self)
      end,
      __base = _base_0,
      __name = "RootBlock",
      __parent = _parent_0
    }, {
      __index = function(cls, name)
        local val = rawget(_base_0, name)
        if val == nil and _parent_0 then
          return _parent_0[name]
        else
          return val
        end
      end,
      __call = function(cls, ...)
        local _self_0 = setmetatable({}, _base_0)
        cls.__init(_self_0, ...)
        return _self_0
      end
    })
    _base_0.__class = _class_0
    if _parent_0 and _parent_0.__inherited then
      _parent_0.__inherited(_parent_0, _class_0)
    end
    RootBlock = _class_0
  end
  local format_error
  format_error = function(msg, pos, file_str)
    local line = pos_to_line(file_str, pos)
    local line_str
    line_str, line = get_closest_line(file_str, line)
    line_str = line_str or ""
    return concat({
      "Compile error: " .. msg,
      (" [%d] >>    %s"):format(line, trim(line_str))
    }, "\n")
  end
  local value
  value = function(value)
    local out = nil
    do
      local _with_0 = RootBlock()
      _with_0:add(_with_0:value(value))
      out = _with_0:render()
    end
    return out
  end
  local tree
  tree = function(tree, options)
    if options == nil then
      options = { }
    end
    assert(tree, "missing tree")
    local scope = (options.scope or RootBlock)(options)
    local runner = coroutine.create(function()
      return scope:root_stms(tree)
    end)
    local success, err = coroutine.resume(runner)
    if not success then
      local error_msg
      if type(err) == "table" then
        local error_type = err[1]
        if error_type == "user-error" then
          error_msg = err[2]
        else
          error_msg = error("Unknown error thrown", util.dump(error_msg))
        end
      else
        error_msg = concat({
          err,
          debug.traceback(runner)
        }, "\n")
      end
      return nil, error_msg, scope.last_pos
    else
      local lua_code = scope:render()
      local posmap = scope._lines:flatten_posmap()
      return lua_code, posmap
    end
  end
  do
    local _with_0 = require("moonscript.data")
    local data = _with_0
    for name, cls in pairs({
      Line = Line,
      Lines = Lines,
      DelayedLine = DelayedLine
    }) do
      data[name] = cls
    end
  end
  return {
    tree = tree,
    value = value,
    format_error = format_error,
    Block = Block,
    RootBlock = RootBlock
  }
  
end
package.preload['moonscript.data'] = function()
  local concat, remove, insert = table.concat, table.remove, table.insert
  local Set
  Set = function(items)
    local self = { }
    local _list_0 = items
    for _index_0 = 1, #_list_0 do
      local key = _list_0[_index_0]
      self[key] = true
    end
    return self
  end
  local Stack
  do
    local _parent_0 = nil
    local _base_0 = {
      __tostring = function(self)
        return "<Stack {" .. concat(self, ", ") .. "}>"
      end,
      pop = function(self)
        return remove(self)
      end,
      push = function(self, value)
        insert(self, value)
        return value
      end,
      top = function(self)
        return self[#self]
      end
    }
    _base_0.__index = _base_0
    if _parent_0 then
      setmetatable(_base_0, _parent_0.__base)
    end
    local _class_0 = setmetatable({
      __init = function(self, ...)
        local _list_0 = {
          ...
        }
        for _index_0 = 1, #_list_0 do
          local v = _list_0[_index_0]
          self:push(v)
        end
        return nil
      end,
      __base = _base_0,
      __name = "Stack",
      __parent = _parent_0
    }, {
      __index = function(cls, name)
        local val = rawget(_base_0, name)
        if val == nil and _parent_0 then
          return _parent_0[name]
        else
          return val
        end
      end,
      __call = function(cls, ...)
        local _self_0 = setmetatable({}, _base_0)
        cls.__init(_self_0, ...)
        return _self_0
      end
    })
    _base_0.__class = _class_0
    if _parent_0 and _parent_0.__inherited then
      _parent_0.__inherited(_parent_0, _class_0)
    end
    Stack = _class_0
  end
  local lua_keywords = Set({
    'and',
    'break',
    'do',
    'else',
    'elseif',
    'end',
    'false',
    'for',
    'function',
    'if',
    'in',
    'local',
    'nil',
    'not',
    'or',
    'repeat',
    'return',
    'then',
    'true',
    'until',
    'while'
  })
  return {
    Set = Set,
    Stack = Stack,
    lua_keywords = lua_keywords
  }
  
end
package.preload['moonscript.dump'] = function()
  local flat_value
  flat_value = function(op, depth)
    if depth == nil then
      depth = 1
    end
    if type(op) == "string" then
      return '"' .. op .. '"'
    end
    if type(op) ~= "table" then
      return tostring(op)
    end
    local items = (function()
      local _accum_0 = { }
      local _len_0 = 1
      local _list_0 = op
      for _index_0 = 1, #_list_0 do
        local item = _list_0[_index_0]
        _accum_0[_len_0] = flat_value(item, depth + 1)
        _len_0 = _len_0 + 1
      end
      return _accum_0
    end)()
    local pos = op[-1]
    return "{" .. (pos and "[" .. pos .. "] " or "") .. table.concat(items, ", ") .. "}"
  end
  local value
  value = function(op)
    return flat_value(op)
  end
  local tree
  tree = function(block)
    local _list_0 = block
    for _index_0 = 1, #_list_0 do
      value = _list_0[_index_0]
      print(flat_value(value))
    end
  end
  return {
    value = value,
    tree = tree
  }
  
end
package.preload['moonscript.errors'] = function()
  local util = require("moonscript.util")
  local lpeg = require("lpeg")
  local concat, insert = table.concat, table.insert
  local split, pos_to_line = util.split, util.pos_to_line
  local user_error
  user_error = function(...)
    return error({
      "user-error",
      ...
    })
  end
  local lookup_line
  lookup_line = function(fname, pos, cache)
    if not cache[fname] then
      do
        local _with_0 = io.open(fname)
        cache[fname] = _with_0:read("*a")
        _with_0:close()
      end
    end
    return pos_to_line(cache[fname], pos)
  end
  local reverse_line_number
  reverse_line_number = function(fname, line_table, line_num, cache)
    for i = line_num, 0, -1 do
      if line_table[i] then
        return lookup_line(fname, line_table[i], cache)
      end
    end
    return "unknown"
  end
  local truncate_traceback
  truncate_traceback = function(traceback, chunk_func)
    if chunk_func == nil then
      chunk_func = "moonscript_chunk"
    end
    traceback = split(traceback, "\n")
    local stop = #traceback
    while stop > 1 do
      if traceback[stop]:match(chunk_func) then
        break
      end
      stop = stop - 1
    end
    traceback = (function()
      local _accum_0 = { }
      local _len_0 = 1
      local _list_0 = traceback
      local _max_0 = stop
      for _index_0 = 1, _max_0 < 0 and #_list_0 + _max_0 or _max_0 do
        local t = _list_0[_index_0]
        _accum_0[_len_0] = t
        _len_0 = _len_0 + 1
      end
      return _accum_0
    end)()
    local rep = "function '" .. chunk_func .. "'"
    traceback[#traceback] = traceback[#traceback]:gsub(rep, "main chunk")
    return concat(traceback, "\n")
  end
  local rewrite_traceback
  rewrite_traceback = function(text, err)
    local line_tables = require("moonscript.line_tables")
    local V, S, Ct, C = lpeg.V, lpeg.S, lpeg.Ct, lpeg.C
    local header_text = "stack traceback:"
    local Header, Line = V("Header"), V("Line")
    local Break = lpeg.S("\n")
    local g = lpeg.P({
      Header,
      Header = header_text * Break * Ct(Line ^ 1),
      Line = "\t" * C((1 - Break) ^ 0) * (Break + -1)
    })
    local cache = { }
    local rewrite_single
    rewrite_single = function(trace)
      local fname, line, msg = trace:match('^%[string "(.-)"]:(%d+): (.*)$')
      local tbl = line_tables[fname]
      if fname and tbl then
        return concat({
          fname,
          ":",
          reverse_line_number(fname, tbl, line, cache),
          ": ",
          "(",
          line,
          ") ",
          msg
        })
      else
        return trace
      end
    end
    err = rewrite_single(err)
    local match = g:match(text)
    if not (match) then
      return nil
    end
    for i, trace in ipairs(match) do
      match[i] = rewrite_single(trace)
    end
    return concat({
      "moon: " .. err,
      header_text,
      "\t" .. concat(match, "\n\t")
    }, "\n")
  end
  return {
    rewrite_traceback = rewrite_traceback,
    truncate_traceback = truncate_traceback,
    user_error = user_error
  }
  
end
package.preload['moonscript'] = function()
  local compile = require("moonscript.compile")
  local parse = require("moonscript.parse")
  local concat, insert = table.concat, table.insert
  local split, dump, get_options, unpack
  do
    local _table_0 = require("moonscript.util")
    split, dump, get_options, unpack = _table_0.split, _table_0.dump, _table_0.get_options, _table_0.unpack
  end
  local lua = {
    loadstring = loadstring,
    load = load
  }
  local dirsep, line_tables, create_moonpath, to_lua, moon_loader, init_loader, loadstring, loadfile, dofile
  dirsep = "/"
  line_tables = require("moonscript.line_tables")
  create_moonpath = function(package_path)
    local paths = split(package_path, ";")
    for i, path in ipairs(paths) do
      local p = path:match("^(.-)%.lua$")
      if p then
        paths[i] = p .. ".moon"
      end
    end
    return concat(paths, ";")
  end
  to_lua = function(text, options)
    if options == nil then
      options = { }
    end
    if "string" ~= type(text) then
      local t = type(text)
      return nil, "expecting string (got " .. t .. ")", 2
    end
    local tree, err = parse.string(text)
    if not tree then
      return nil, err
    end
    local code, ltable, pos = compile.tree(tree, options)
    if not code then
      return nil, compile.format_error(ltable, pos, text), 2
    end
    return code, ltable
  end
  moon_loader = function(name)
    local name_path = name:gsub("%.", dirsep)
    local file, file_path
    local _list_0 = split(package.moonpath, ";")
    for _index_0 = 1, #_list_0 do
      local path = _list_0[_index_0]
      file_path = path:gsub("?", name_path)
      file = io.open(file_path)
      if file then
        break
      end
    end
    if file then
      local text = file:read("*a")
      file:close()
      return loadstring(text, file_path)
    else
      return nil, "Could not find moon file"
    end
  end
  if not package.moonpath then
    package.moonpath = create_moonpath(package.path)
  end
  init_loader = function()
    return insert(package.loaders or package.searchers, 2, moon_loader)
  end
  if not (_G.moon_no_loader) then
    init_loader()
  end
  loadstring = function(...)
    local options, str, chunk_name, mode, env = get_options(...)
    chunk_name = chunk_name or "=(moonscript.loadstring)"
    local code, ltable_or_err = to_lua(str, options)
    if not (code) then
      return nil, ltable_or_err
    end
    if chunk_name then
      line_tables[chunk_name] = ltable_or_err
    end
    return (lua.loadstring or lua.load)(code, chunk_name, unpack({
      mode,
      env
    }))
  end
  loadfile = function(fname, ...)
    local file, err = io.open(fname)
    if not (file) then
      return nil, err
    end
    local text = assert(file:read("*a"))
    file:close()
    return loadstring(text, fname, ...)
  end
  dofile = function(...)
    local f = assert(loadfile(...))
    return f()
  end
  return {
    _NAME = "moonscript",
    to_lua = to_lua,
    moon_chunk = moon_chunk,
    moon_loader = moon_loader,
    dirsep = dirsep,
    dofile = dofile,
    loadfile = loadfile,
    loadstring = loadstring
  }
  
end
package.preload['moonscript.line_tables'] = function()
  return { }
  
end
package.preload['moonscript.parse'] = function()
  
  local util = require"moonscript.util"
  
  local lpeg = require"lpeg"
  
  local debug_grammar = false
  
  local data = require"moonscript.data"
  local types = require"moonscript.types"
  
  local ntype = types.ntype
  
  local dump = util.dump
  local trim = util.trim
  
  local getfenv = util.getfenv
  local setfenv = util.setfenv
  local unpack = util.unpack
  
  local Stack = data.Stack
  
  local function count_indent(str)
  	local sum = 0
  	for v in str:gmatch("[\t ]") do
  		if v == ' ' then sum = sum + 1 end
  		if v == '\t' then sum = sum + 4 end
  	end
  	return sum
  end
  
  local R, S, V, P = lpeg.R, lpeg.S, lpeg.V, lpeg.P
  local C, Ct, Cmt, Cg, Cb, Cc = lpeg.C, lpeg.Ct, lpeg.Cmt, lpeg.Cg, lpeg.Cb, lpeg.Cc
  
  lpeg.setmaxstack(10000)
  
  local White = S" \t\r\n"^0
  local _Space = S" \t"^0
  local Break = P"\r"^-1 * P"\n"
  local Stop = Break + -1
  local Indent = C(S"\t "^0) / count_indent
  
  local Comment = P"--" * (1 - S"\r\n")^0 * #Stop
  local Space = _Space * Comment^-1
  local SomeSpace = S" \t"^1 * Comment^-1
  
  local SpaceBreak = Space * Break
  local EmptyLine = SpaceBreak
  
  local AlphaNum = R("az", "AZ", "09", "__")
  
  local _Name = C(R("az", "AZ", "__") * AlphaNum^0)
  local Name = Space * _Name
  
  local Num = P"0x" * R("09", "af", "AF")^1 +
  	(
  		R"09"^1 * (P"." * R"09"^1)^-1 +
  		P"." * R"09"^1
  	) * (S"eE" * P"-"^-1 * R"09"^1)^-1
  
  Num = Space * (Num / function(value) return {"number", value} end)
  
  local FactorOp = Space * C(S"+-")
  local TermOp = Space * C(S"*/%^")
  
  local Shebang = P"#!" * P(1 - Stop)^0
  
  -- can't have P(false) because it causes preceding patterns not to run
  local Cut = P(function() return false end)
  
  local function ensure(patt, finally)
  	return patt * finally + finally * Cut
  end
  
  -- auto declare Proper variables with lpeg.V
  local function wrap_env(fn)
  	local env = getfenv(fn)
  	local wrap_name = V
  
  	if debug_grammar then
  		local indent = 0
  		local indent_char = "  "
  
  		local function iprint(...)
  			local args = {...}
  			for i=1,#args do
  				args[i] = tostring(args[i])
  			end
  
  			io.stdout:write(indent_char:rep(indent) .. table.concat(args, ", ") .. "\n")
  		end
  
  		wrap_name = function(name)
  			local v = V(name)
  			v = Cmt("", function()
  				iprint("* " .. name)
  				indent = indent + 1
  				return true
  			end) * Cmt(v, function(str, pos, ...)
  				iprint(name, true)
  				indent = indent - 1
  				return true, ...
  			end) + Cmt("", function()
  				iprint(name, false)
  				indent = indent - 1
  				return false
  			end)
  			return v
  		end
  	end
  
  	return setfenv(fn, setmetatable({}, {
  		__index = function(self, name)
  			local value = env[name]
  			if value ~= nil then return value end
  
  			if name:match"^[A-Z][A-Za-z0-9]*$" then
  				local v = wrap_name(name)
  				rawset(self, name, v)
  				return v
  			end
  			error("unknown variable referenced: "..name)
  		end
  	}))
  end
  
  local function extract_line(str, start_pos)
  	str = str:sub(start_pos)
  	m = str:match"^(.-)\n"
  	if m then return m end
  	return str:match"^.-$"
  end
  
  local function mark(name)
  	return function(...)
  		return {name, ...}
  	end
  end
  
  local function insert_pos(pos, value)
      if type(value) == "table" then
          value[-1] = pos
      end
      return value
  end
  
  local function pos(patt)
  	return (lpeg.Cp() * patt) / insert_pos
  end
  
  local function got(what)
  	return Cmt("", function(str, pos, ...)
  		local cap = {...}
  		print("++ got "..what, "["..extract_line(str, pos).."]")
  		return true
  	end)
  end
  
  local function flatten(tbl)
  	if #tbl == 1 then
  		return tbl[1]
  	end
  	return tbl
  end
  
  local function flatten_or_mark(name)
  	return function(tbl)
  		if #tbl == 1 then return tbl[1] end
  		table.insert(tbl, 1, name)
  		return tbl
  	end
  end
  
  -- makes sure the last item in a chain is an index
  local _chain_assignable = { index = true, dot = true, slice = true }
  
  local function is_assignable(node)
  	local t = ntype(node)
  	return t == "self" or t == "value" or t == "self_class" or
  		t == "chain" and _chain_assignable[ntype(node[#node])] or
  		t == "table"
  end
  
  local function check_assignable(str, pos, value)
  	if is_assignable(value) then
  		return true, value
  	end
  	return false
  end
  
  local flatten_explist = flatten_or_mark"explist"
  local function format_assign(lhs_exps, assign)
  	if not assign then
  		return flatten_explist(lhs_exps)
  	end
  
  	for _, assign_exp in ipairs(lhs_exps) do
  		if not is_assignable(assign_exp) then
  			error {assign_exp, "left hand expression is not assignable"}
  		end
  	end
  
  	local t = ntype(assign)
  	if t == "assign" then
  		return {"assign", lhs_exps, unpack(assign, 2)}
  	elseif t == "update" then
  		return {"update", lhs_exps[1], unpack(assign, 2)}
  	end
  
  	error "unknown assign expression"
  end
  
  -- the if statement only takes a single lhs, so we wrap in table to git to
  -- "assign" tuple format
  local function format_single_assign(lhs, assign)
  	if assign then
  		return format_assign({lhs}, assign)
  	end
  	return lhs
  end
  
  local function sym(chars)
  	return Space * chars
  end
  
  local function symx(chars)
  	return chars
  end
  
  local function simple_string(delim, allow_interpolation)
  	local inner = P('\\'..delim) + "\\\\" + (1 - P(delim))
  	if allow_interpolation then
  		inter = symx"#{" * V"Exp" * sym"}"
  		inner = (C((inner - inter)^1) + inter / mark"interpolate")^0
  	else
  		inner = C(inner^0)
  	end
  
  	return C(symx(delim)) *
  		inner * sym(delim) / mark"string"
  end
  
  local function wrap_func_arg(value)
  	return {"call", {value}}
  end
  
  -- DOCME
  local function flatten_func(callee, args)
  	if #args == 0 then return callee end
  
  	args = {"call", args}
  	if ntype(callee) == "chain" then
  		-- check for colon stub that needs arguments
  		if ntype(callee[#callee]) == "colon_stub" then
  			local stub = callee[#callee]
  			stub[1] = "colon"
  			table.insert(stub, args)
  		else
  			table.insert(callee, args)
  		end
  
  		return callee
  	end
  
  	return {"chain", callee, args}
  end
  
  local function flatten_string_chain(str, chain, args)
  	if not chain then return str end
  	return flatten_func({"chain", str, unpack(chain)}, args)
  end
  
  -- transforms a statement that has a line decorator
  local function wrap_decorator(stm, dec)
  	if not dec then return stm end
  	return { "decorated", stm, dec }
  end
  
  -- wrap if statement if there is a conditional decorator
  local function wrap_if(stm, cond)
  	if cond then
  		local pass, fail = unpack(cond)
  		if fail then fail = {"else", {fail}} end
  		return {"if", cond[2], {stm}, fail}
  	end
  	return stm
  end
  
  local function check_lua_string(str, pos, right, left)
  	return #left == #right
  end
  
  -- :name in table literal
  local function self_assign(name)
  	return {{"key_literal", name}, name}
  end
  
  local err_msg = "Failed to parse:%s\n [%d] >>    %s"
  
  local build_grammar = wrap_env(function()
  	local _indent = Stack(0) -- current indent
  	local _do_stack = Stack(0)
  
  	local last_pos = 0 -- used to know where to report error
  	local function check_indent(str, pos, indent)
  		last_pos = pos
  		return _indent:top() == indent
  	end
  
  	local function advance_indent(str, pos, indent)
  		local top = _indent:top()
  		if top ~= -1 and indent > _indent:top() then
  			_indent:push(indent)
  			return true
  		end
  	end
  
  	local function push_indent(str, pos, indent)
  		_indent:push(indent)
  		return true
  	end
  
  	local function pop_indent(str, pos)
  		if not _indent:pop() then error("unexpected outdent") end
  		return true
  	end
  
  
  	local function check_do(str, pos, do_node)
  		local top = _do_stack:top()
  		if top == nil or top then
  			return true, do_node
  		end
  		return false
  	end
  
  	local function disable_do(str_pos)
  		_do_stack:push(false)
  		return true
  	end
  
  	local function enable_do(str_pos)
  		_do_stack:push(true)
  		return true
  	end
  
  	local function pop_do(str, pos)
  		if nil == _do_stack:pop() then error("unexpected do pop") end
  		return true
  	end
  
  	local DisableDo = Cmt("", disable_do)
  	local EnableDo = Cmt("", enable_do)
  	local PopDo = Cmt("", pop_do)
  
  	local keywords = {}
  	local function key(chars)
  		keywords[chars] = true
  		return Space * chars * -AlphaNum
  	end
  
  	local function op(word)
  		local patt = Space * C(word)
  		if word:match("^%w*$") then
  			keywords[word] = true
  			patt = patt * -AlphaNum
  		end
  		return patt
  	end
  
  	-- make sure name is not a keyword
  	local Name = Cmt(Name, function(str, pos, name)
  		if keywords[name] then return false end
  		return true
  	end) / trim
  
  	local SelfName = Space * "@" * (
  		"@" * (_Name / mark"self_class" + Cc"self.__class") +
  		_Name / mark"self" + Cc"self")
  
  	local KeyName = SelfName + Space * _Name / mark"key_literal"
  
  	local Name = SelfName + Name + Space * "..." / trim
  
  	local g = lpeg.P{
  		File,
  		File = Shebang^-1 * (Block + Ct""),
  		Block = Ct(Line * (Break^1 * Line)^0),
  		CheckIndent = Cmt(Indent, check_indent), -- validates line is in correct indent
  		Line = (CheckIndent * Statement + Space * #Stop),
  
  		Statement = pos(
  				Import + While + With + For + ForEach + Switch + Return +
  				Local + Export + BreakLoop +
  				Ct(ExpList) * (Update + Assign)^-1 / format_assign
  			) * Space * ((
  				-- statement decorators
  				key"if" * Exp * (key"else" * Exp)^-1 * Space / mark"if" +
  				key"unless" * Exp / mark"unless" +
  				CompInner / mark"comprehension"
  			) * Space)^-1 / wrap_decorator,
  
  		Body = Space^-1 * Break * EmptyLine^0 * InBlock + Ct(Statement), -- either a statement, or an indented block
  
  		Advance = #Cmt(Indent, advance_indent), -- Advances the indent, gives back whitespace for CheckIndent
  		PushIndent = Cmt(Indent, push_indent),
  		PreventIndent = Cmt(Cc(-1), push_indent),
  		PopIndent = Cmt("", pop_indent),
  		InBlock = Advance * Block * PopIndent,
  
  		Local = key"local" * ((op"*" + op"^") / mark"declare_glob" + Ct(NameList) / mark"declare_with_shadows"),
  
  		Import = key"import" *  Ct(ImportNameList) * key"from" * Exp / mark"import",
  		ImportName = (sym"\\" * Ct(Cc"colon_stub" * Name) + Name),
  		ImportNameList = ImportName * (sym"," * ImportName)^0,
  
  		NameList = Name * (sym"," * Name)^0,
  
  		BreakLoop = Ct(key"break"/trim) + Ct(key"continue"/trim),
  
  		Return = key"return" * (ExpListLow/mark"explist" + C"") / mark"return",
  
  		WithExp = Ct(ExpList) * Assign^-1 / format_assign,
  		With = key"with" * DisableDo * ensure(WithExp, PopDo) * key"do"^-1 * Body / mark"with",
  
  		Switch = key"switch" * DisableDo * ensure(Exp, PopDo) * key"do"^-1 * Space^-1 * Break * SwitchBlock / mark"switch",
  
  		SwitchBlock = EmptyLine^0 * Advance * Ct(SwitchCase * (Break^1 * SwitchCase)^0 * (Break^1 * SwitchElse)^-1) * PopIndent,
  		SwitchCase = key"when" * Ct(ExpList) * key"then"^-1 * Body / mark"case",
  		SwitchElse = key"else" * Body / mark"else",
  
  		IfCond = Exp * Assign^-1 / format_single_assign,
  
  		If = key"if" * IfCond * key"then"^-1 * Body *
  			((Break * CheckIndent)^-1 * EmptyLine^0 * key"elseif" * pos(IfCond) * key"then"^-1 * Body / mark"elseif")^0 *
  			((Break * CheckIndent)^-1 * EmptyLine^0 * key"else" * Body / mark"else")^-1 / mark"if",
  
  		Unless = key"unless" * IfCond * key"then"^-1 * Body *
  			((Break * CheckIndent)^-1 * EmptyLine^0 * key"else" * Body / mark"else")^-1 / mark"unless",
  
  		While = key"while" * DisableDo * ensure(Exp, PopDo) * key"do"^-1 * Body / mark"while",
  
  		For = key"for" * DisableDo * ensure(Name * sym"=" * Ct(Exp * sym"," * Exp * (sym"," * Exp)^-1), PopDo) *
  			key"do"^-1 * Body / mark"for",
  
  		ForEach = key"for" * Ct(AssignableNameList) * key"in" * DisableDo * ensure(Ct(sym"*" * Exp / mark"unpack" + ExpList), PopDo) * key"do"^-1 * Body / mark"foreach",
  
  		Do = key"do" * Body / mark"do",
  
  		Comprehension = sym"[" * Exp * CompInner * sym"]" / mark"comprehension",
  
  		TblComprehension = sym"{" * Ct(Exp * (sym"," * Exp)^-1) * CompInner * sym"}" / mark"tblcomprehension",
  
  		CompInner = Ct((CompForEach + CompFor) * CompClause^0),
  		CompForEach = key"for" * Ct(NameList) * key"in" * (sym"*" * Exp / mark"unpack" + Exp) / mark"foreach",
  		CompFor = key "for" * Name * sym"=" * Ct(Exp * sym"," * Exp * (sym"," * Exp)^-1) / mark"for",
  		CompClause = CompFor + CompForEach + key"when" * Exp / mark"when",
  
  		Assign = sym"=" * (Ct(With + If + Switch) + Ct(TableBlock + ExpListLow)) / mark"assign",
  		Update = ((sym"..=" + sym"+=" + sym"-=" + sym"*=" + sym"/=" + sym"%=" + sym"or=" + sym"and=") / trim) * Exp / mark"update",
  
  		-- we can ignore precedence for now
  		OtherOps = op"or" + op"and" + op"<=" + op">=" + op"~=" + op"!=" + op"==" + op".." + op"<" + op">",
  
  		Assignable = Cmt(DotChain + Chain, check_assignable) + Name,
  		AssignableList = Assignable * (sym"," * Assignable)^0,
  
  		Exp = Ct(Value * ((OtherOps + FactorOp + TermOp) * Value)^0) / flatten_or_mark"exp",
  
  		-- Exp = Ct(Factor * (OtherOps * Factor)^0) / flatten_or_mark"exp",
  		-- Factor = Ct(Term * (FactorOp * Term)^0) / flatten_or_mark"exp",
  		-- Term = Ct(Value * (TermOp * Value)^0) / flatten_or_mark"exp",
  
  		SimpleValue =
  			If + Unless +
  			Switch +
  			With +
  			ClassDecl +
  			ForEach + For + While +
  			Cmt(Do, check_do) +
  			sym"-" * -SomeSpace * Exp / mark"minus" +
  			sym"#" * Exp / mark"length" +
  			key"not" * Exp / mark"not" +
  			TblComprehension +
  			TableLit +
  			Comprehension +
  			FunLit +
  			Num,
  
  		ChainValue = -- a function call or an object access
  			StringChain +
  			((Chain + DotChain + Callable) * Ct(InvokeArgs^-1)) / flatten_func,
  
  		Value = pos(
  			SimpleValue +
  			Ct(KeyValueList) / mark"table" +
  			ChainValue),
  
  		SliceValue = SimpleValue + ChainValue,
  
  		StringChain = String *
  			(Ct((ColonCall + ColonSuffix) * ChainTail^-1) * Ct(InvokeArgs^-1))^-1 / flatten_string_chain,
  
  		String = Space * DoubleString + Space * SingleString + LuaString,
  		SingleString = simple_string("'"),
  		DoubleString = simple_string('"', true),
  
  		LuaString = Cg(LuaStringOpen, "string_open") * Cb"string_open" * Break^-1 *
  			C((1 - Cmt(C(LuaStringClose) * Cb"string_open", check_lua_string))^0) *
  			LuaStringClose / mark"string",
  
  		LuaStringOpen = sym"[" * P"="^0 * "[" / trim,
  		LuaStringClose = "]" * P"="^0 * "]",
  
  		Callable = Name + Parens / mark"parens",
  		Parens = sym"(" * Exp * sym")",
  
  		FnArgs = symx"(" * Ct(ExpList^-1) * sym")" + sym"!" * -P"=" * Ct"",
  
  		ChainTail = ChainItem^1 * ColonSuffix^-1 + ColonSuffix,
  
  		-- a list of funcalls and indexes on a callable
  		Chain = Callable * ChainTail / mark"chain",
  
  		-- shorthand dot call for use in with statement
  		DotChain =
  			(sym"." * Cc(-1) * (_Name / mark"dot") * ChainTail^-1) / mark"chain" +
  			(sym"\\" * Cc(-1) * (
  				(_Name * Invoke / mark"colon") * ChainTail^-1 +
  				(_Name / mark"colon_stub")
  			)) / mark"chain",
  
  		ChainItem =
  			Invoke +
  			Slice +
  			symx"[" * Exp/mark"index" * sym"]" +
  			symx"." * _Name/mark"dot" +
  			ColonCall,
  
  		Slice = symx"[" * (SliceValue + Cc(1)) * sym"," * (SliceValue + Cc"")  *
  			(sym"," * SliceValue)^-1 *sym"]" / mark"slice",
  
  		ColonCall = symx"\\" * (_Name * Invoke) / mark"colon",
  		ColonSuffix = symx"\\" * _Name / mark"colon_stub",
  
  		Invoke = FnArgs/mark"call" +
  			SingleString / wrap_func_arg +
  			DoubleString / wrap_func_arg,
  
  		TableValue = KeyValue + Ct(Exp),
  
  		TableLit = sym"{" * Ct(
  				TableValueList^-1 * sym","^-1 *
  				(SpaceBreak * TableLitLine * (sym","^-1 * SpaceBreak * TableLitLine)^0 * sym","^-1)^-1
  			) * White * sym"}" / mark"table",
  
  		TableValueList = TableValue * (sym"," * TableValue)^0,
  		TableLitLine = PushIndent * ((TableValueList * PopIndent) + (PopIndent * Cut)) + Space,
  
  		-- the unbounded table
  		TableBlockInner = Ct(KeyValueLine * (SpaceBreak^1 * KeyValueLine)^0),
  		TableBlock = SpaceBreak^1 * Advance * ensure(TableBlockInner, PopIndent) / mark"table",
  
  		ClassDecl = key"class" * -P":" * (Assignable + Cc(nil)) * (key"extends" * PreventIndent * ensure(Exp, PopIndent) + C"")^-1 * (ClassBlock + Ct("")) / mark"class",
  
  		ClassBlock = SpaceBreak^1 * Advance *
  			Ct(ClassLine * (SpaceBreak^1 * ClassLine)^0) * PopIndent,
  		ClassLine = CheckIndent * ((
  				KeyValueList / mark"props" +
  				Statement / mark"stm" +
  				Exp / mark"stm"
  			) * sym","^-1),
  
  		Export = key"export" * (
  			Cc"class" * ClassDecl +
  			op"*" + op"^" +
  			Ct(NameList) * (sym"=" * Ct(ExpListLow))^-1) / mark"export",
  
  		KeyValue = (sym":" * Name) / self_assign + Ct((KeyName + sym"[" * Exp * sym"]" + DoubleString + SingleString) * symx":" * (Exp + TableBlock)),
  		KeyValueList = KeyValue * (sym"," * KeyValue)^0,
  		KeyValueLine = CheckIndent * KeyValueList * sym","^-1,
  
  		FnArgsDef = sym"(" * Ct(FnArgDefList^-1) *
  			(key"using" * Ct(NameList + Space * "nil") + Ct"") *
  			sym")" + Ct"" * Ct"",
  
  		FnArgDefList = FnArgDef * (sym"," * FnArgDef)^0,
  		FnArgDef = Ct(Name * (sym"=" * Exp)^-1),
  
  		FunLit = FnArgsDef *
  			(sym"->" * Cc"slim" + sym"=>" * Cc"fat") *
  			(Body + Ct"") / mark"fndef",
  
  		NameList = Name * (sym"," * Name)^0,
  		NameOrDestructure = Name + TableLit,
  		AssignableNameList = NameOrDestructure * (sym"," * NameOrDestructure)^0,
  
  		ExpList = Exp * (sym"," * Exp)^0,
  		ExpListLow = Exp * ((sym"," + sym";") * Exp)^0,
  
  		InvokeArgs = -P"-" * (ExpList * (sym"," * (TableBlock + SpaceBreak * Advance * ArgBlock * TableBlock^-1) + TableBlock)^-1 + TableBlock),
  		ArgBlock = ArgLine * (sym"," * SpaceBreak * ArgLine)^0 * PopIndent,
  		ArgLine = CheckIndent * ExpList
  	}
  
  	return {
  		_g = White * g * White * -1,
  		match = function(self, str, ...)
  
  			local pos_to_line = function(pos)
  				return util.pos_to_line(str, pos)
  			end
  
  			local get_line = function(num)
  				return util.get_line(str, num)
  			end
  
  			local tree
  			local pass, err = pcall(function(...)
  				tree = self._g:match(str, ...)
  			end, ...)
  
  			-- regular error, let it bubble up
  			if type(err) == "string" then
  				error(err)
  			end
  
  			if not tree then
  				local pos = last_pos
  				local msg
  
  				if err then
  					local node
  					node, msg = unpack(err)
  					msg = msg and " " .. msg
  					pos = node[-1]
  				end
  
  				local line_no = pos_to_line(pos)
  				local line_str = get_line(line_no) or ""
  
  				return nil, err_msg:format(msg or "", line_no, trim(line_str))
  			end
  			return tree
  		end
  	}
  end)
  
  return {
  	extract_line = extract_line,
  
  	-- parse a string
  	-- returns tree, or nil and error message
  	string = function (str)
  		local g = build_grammar()
  		return g:match(str)
  	end
  }
  
  
end
package.preload['moonscript.transform.destructure'] = function()
  local ntype, mtype, build
  do
    local _table_0 = require("moonscript.types")
    ntype, mtype, build = _table_0.ntype, _table_0.mtype, _table_0.build
  end
  local NameProxy
  do
    local _table_0 = require("moonscript.transform.names")
    NameProxy = _table_0.NameProxy
  end
  local insert = table.insert
  local unpack
  do
    local _table_0 = require("moonscript.util")
    unpack = _table_0.unpack
  end
  local user_error
  do
    local _table_0 = require("moonscript.errors")
    user_error = _table_0.user_error
  end
  local join
  join = function(...)
    do
      local _with_0 = { }
      local out = _with_0
      local i = 1
      local _list_0 = {
        ...
      }
      for _index_0 = 1, #_list_0 do
        local tbl = _list_0[_index_0]
        local _list_1 = tbl
        for _index_1 = 1, #_list_1 do
          local v = _list_1[_index_1]
          out[i] = v
          i = i + 1
        end
      end
      return _with_0
    end
  end
  local has_destructure
  has_destructure = function(names)
    local _list_0 = names
    for _index_0 = 1, #_list_0 do
      local n = _list_0[_index_0]
      if ntype(n) == "table" then
        return true
      end
    end
    return false
  end
  local extract_assign_names
  extract_assign_names = function(name, accum, prefix)
    if accum == nil then
      accum = { }
    end
    if prefix == nil then
      prefix = { }
    end
    local i = 1
    local _list_0 = name[2]
    for _index_0 = 1, #_list_0 do
      local tuple = _list_0[_index_0]
      local value, suffix
      if #tuple == 1 then
        local s = {
          "index",
          {
            "number",
            i
          }
        }
        i = i + 1
        value, suffix = tuple[1], s
      else
        local key = tuple[1]
        local s
        if ntype(key) == "key_literal" then
          s = {
            "dot",
            key[2]
          }
        else
          s = {
            "index",
            key
          }
        end
        value, suffix = tuple[2], s
      end
      suffix = join(prefix, {
        suffix
      })
      local t = ntype(value)
      if t == "value" or t == "chain" or t == "self" then
        insert(accum, {
          value,
          suffix
        })
      elseif t == "table" then
        extract_assign_names(value, accum, suffix)
      else
        user_error("Can't destructure value of type: " .. tostring(ntype(value)))
      end
    end
    return accum
  end
  local build_assign
  build_assign = function(destruct_literal, receiver)
    local extracted_names = extract_assign_names(destruct_literal)
    local names = { }
    local values = { }
    local inner = {
      "assign",
      names,
      values
    }
    local obj
    if mtype(receiver) == NameProxy then
      obj = receiver
    else
      do
        local _with_0 = NameProxy("obj")
        obj = _with_0
        inner = build["do"]({
          build.assign_one(obj, receiver),
          {
            "assign",
            names,
            values
          }
        })
        obj = _with_0
      end
    end
    local _list_0 = extracted_names
    for _index_0 = 1, #_list_0 do
      local tuple = _list_0[_index_0]
      insert(names, tuple[1])
      insert(values, obj:chain(unpack(tuple[2])))
    end
    return build.group({
      {
        "declare",
        names
      },
      inner
    })
  end
  local split_assign
  split_assign = function(assign)
    local names, values = unpack(assign, 2)
    local g = { }
    local total_names = #names
    local total_values = #values
    local start = 1
    for i, n in ipairs(names) do
      if ntype(n) == "table" then
        if i > start then
          local stop = i - 1
          insert(g, {
            "assign",
            (function()
              local _accum_0 = { }
              local _len_0 = 1
              for i = start, stop do
                _accum_0[_len_0] = names[i]
                _len_0 = _len_0 + 1
              end
              return _accum_0
            end)(),
            (function()
              local _accum_0 = { }
              local _len_0 = 1
              for i = start, stop do
                _accum_0[_len_0] = values[i]
                _len_0 = _len_0 + 1
              end
              return _accum_0
            end)()
          })
        end
        insert(g, build_assign(n, values[i]))
        start = i + 1
      end
    end
    if total_names >= start or total_values >= start then
      local name_slice
      if total_names < start then
        name_slice = {
          "_"
        }
      else
        name_slice = (function()
          local _accum_0 = { }
          local _len_0 = 1
          for i = start, total_names do
            _accum_0[_len_0] = names[i]
            _len_0 = _len_0 + 1
          end
          return _accum_0
        end)()
      end
      local value_slice
      if total_values < start then
        value_slice = {
          "nil"
        }
      else
        value_slice = (function()
          local _accum_0 = { }
          local _len_0 = 1
          for i = start, total_values do
            _accum_0[_len_0] = values[i]
            _len_0 = _len_0 + 1
          end
          return _accum_0
        end)()
      end
      insert(g, {
        "assign",
        name_slice,
        value_slice
      })
    end
    return build.group(g)
  end
  return {
    has_destructure = has_destructure,
    split_assign = split_assign,
    build_assign = build_assign
  }
  
end
package.preload['moonscript.transform.names'] = function()
  local build
  do
    local _table_0 = require("moonscript.types")
    build = _table_0.build
  end
  local unpack
  do
    local _table_0 = require("moonscript.util")
    unpack = _table_0.unpack
  end
  local LocalName
  do
    local _parent_0 = nil
    local _base_0 = {
      get_name = function(self)
        return self.name
      end
    }
    _base_0.__index = _base_0
    if _parent_0 then
      setmetatable(_base_0, _parent_0.__base)
    end
    local _class_0 = setmetatable({
      __init = function(self, name)
        self.name = name
        self[1] = "temp_name"
      end,
      __base = _base_0,
      __name = "LocalName",
      __parent = _parent_0
    }, {
      __index = function(cls, name)
        local val = rawget(_base_0, name)
        if val == nil and _parent_0 then
          return _parent_0[name]
        else
          return val
        end
      end,
      __call = function(cls, ...)
        local _self_0 = setmetatable({}, _base_0)
        cls.__init(_self_0, ...)
        return _self_0
      end
    })
    _base_0.__class = _class_0
    if _parent_0 and _parent_0.__inherited then
      _parent_0.__inherited(_parent_0, _class_0)
    end
    LocalName = _class_0
  end
  local NameProxy
  do
    local _parent_0 = nil
    local _base_0 = {
      get_name = function(self, scope, dont_put)
        if dont_put == nil then
          dont_put = true
        end
        if not self.name then
          self.name = scope:free_name(self.prefix, dont_put)
        end
        return self.name
      end,
      chain = function(self, ...)
        local items = (function(...)
          local _accum_0 = { }
          local _len_0 = 1
          local _list_0 = {
            ...
          }
          for _index_0 = 1, #_list_0 do
            local i = _list_0[_index_0]
            if type(i) == "string" then
              _accum_0[_len_0] = {
                "dot",
                i
              }
            else
              _accum_0[_len_0] = i
            end
            _len_0 = _len_0 + 1
          end
          return _accum_0
        end)(...)
        return build.chain({
          base = self,
          unpack(items)
        })
      end,
      index = function(self, key)
        return build.chain({
          base = self,
          {
            "index",
            key
          }
        })
      end,
      __tostring = function(self)
        if self.name then
          return ("name<%s>"):format(self.name)
        else
          return ("name<prefix(%s)>"):format(self.prefix)
        end
      end
    }
    _base_0.__index = _base_0
    if _parent_0 then
      setmetatable(_base_0, _parent_0.__base)
    end
    local _class_0 = setmetatable({
      __init = function(self, prefix)
        self.prefix = prefix
        self[1] = "temp_name"
      end,
      __base = _base_0,
      __name = "NameProxy",
      __parent = _parent_0
    }, {
      __index = function(cls, name)
        local val = rawget(_base_0, name)
        if val == nil and _parent_0 then
          return _parent_0[name]
        else
          return val
        end
      end,
      __call = function(cls, ...)
        local _self_0 = setmetatable({}, _base_0)
        cls.__init(_self_0, ...)
        return _self_0
      end
    })
    _base_0.__class = _class_0
    if _parent_0 and _parent_0.__inherited then
      _parent_0.__inherited(_parent_0, _class_0)
    end
    NameProxy = _class_0
  end
  return {
    NameProxy = NameProxy,
    LocalName = LocalName
  }
  
end
package.preload['moonscript.transform'] = function()
  local types = require("moonscript.types")
  local util = require("moonscript.util")
  local data = require("moonscript.data")
  local reversed, unpack = util.reversed, util.unpack
  local ntype, mtype, build, smart_node, is_slice, value_is_singular = types.ntype, types.mtype, types.build, types.smart_node, types.is_slice, types.value_is_singular
  local insert = table.insert
  local NameProxy, LocalName
  do
    local _table_0 = require("moonscript.transform.names")
    NameProxy, LocalName = _table_0.NameProxy, _table_0.LocalName
  end
  local destructure = require("moonscript.transform.destructure")
  local implicitly_return
  local Run
  do
    local _parent_0 = nil
    local _base_0 = {
      call = function(self, state)
        return self.fn(state)
      end
    }
    _base_0.__index = _base_0
    if _parent_0 then
      setmetatable(_base_0, _parent_0.__base)
    end
    local _class_0 = setmetatable({
      __init = function(self, fn)
        self.fn = fn
        self[1] = "run"
      end,
      __base = _base_0,
      __name = "Run",
      __parent = _parent_0
    }, {
      __index = function(cls, name)
        local val = rawget(_base_0, name)
        if val == nil and _parent_0 then
          return _parent_0[name]
        else
          return val
        end
      end,
      __call = function(cls, ...)
        local _self_0 = setmetatable({}, _base_0)
        cls.__init(_self_0, ...)
        return _self_0
      end
    })
    _base_0.__class = _class_0
    if _parent_0 and _parent_0.__inherited then
      _parent_0.__inherited(_parent_0, _class_0)
    end
    Run = _class_0
  end
  local apply_to_last
  apply_to_last = function(stms, fn)
    local last_exp_id = 0
    for i = #stms, 1, -1 do
      local stm = stms[i]
      if stm and mtype(stm) ~= Run then
        last_exp_id = i
        break
      end
    end
    return (function()
      local _accum_0 = { }
      local _len_0 = 1
      for i, stm in ipairs(stms) do
        if i == last_exp_id then
          _accum_0[_len_0] = fn(stm)
        else
          _accum_0[_len_0] = stm
        end
        _len_0 = _len_0 + 1
      end
      return _accum_0
    end)()
  end
  local is_singular
  is_singular = function(body)
    if #body ~= 1 then
      return false
    end
    if "group" == ntype(body) then
      return is_singular(body[2])
    else
      return body[1]
    end
  end
  local extract_declarations
  extract_declarations = function(self, body, start, out)
    if body == nil then
      body = self.current_stms
    end
    if start == nil then
      start = self.current_stm_i + 1
    end
    if out == nil then
      out = { }
    end
    for i = start, #body do
      local _continue_0 = false
      repeat
        local stm = body[i]
        if stm == nil then
          _continue_0 = true
          break
        end
        stm = self.transform.statement(stm)
        body[i] = stm
        local _exp_0 = stm[1]
        if "assign" == _exp_0 or "declare" == _exp_0 then
          local _list_0 = stm[2]
          for _index_0 = 1, #_list_0 do
            local name = _list_0[_index_0]
            if type(name) == "string" then
              insert(out, name)
            end
          end
        elseif "group" == _exp_0 then
          extract_declarations(self, stm[2], 1, out)
        end
        _continue_0 = true
      until true
      if not _continue_0 then
        break
      end
    end
    return out
  end
  local expand_elseif_assign
  expand_elseif_assign = function(ifstm)
    for i = 4, #ifstm do
      local case = ifstm[i]
      if ntype(case) == "elseif" and ntype(case[2]) == "assign" then
        local split = {
          unpack(ifstm, 1, i - 1)
        }
        insert(split, {
          "else",
          {
            {
              "if",
              case[2],
              case[3],
              unpack(ifstm, i + 1)
            }
          }
        })
        return split
      end
    end
    return ifstm
  end
  local constructor_name = "new"
  local with_continue_listener
  with_continue_listener = function(body)
    local continue_name = nil
    return {
      Run(function(self)
        return self:listen("continue", function()
          if not (continue_name) then
            continue_name = NameProxy("continue")
            self:put_name(continue_name)
          end
          return continue_name
        end)
      end),
      build.group(body),
      Run(function(self)
        if not (continue_name) then
          return 
        end
        self:put_name(continue_name, nil)
        return self:splice(function(lines)
          return {
            {
              "assign",
              {
                continue_name
              },
              {
                "false"
              }
            },
            {
              "repeat",
              "true",
              {
                lines,
                {
                  "assign",
                  {
                    continue_name
                  },
                  {
                    "true"
                  }
                }
              }
            },
            {
              "if",
              {
                "not",
                continue_name
              },
              {
                {
                  "break"
                }
              }
            }
          }
        end)
      end)
    }
  end
  local Transformer
  do
    local _parent_0 = nil
    local _base_0 = {
      transform = function(self, scope, node, ...)
        if self.seen_nodes[node] then
          return node
        end
        self.seen_nodes[node] = true
        while true do
          local transformer = self.transformers[ntype(node)]
          local res
          if transformer then
            res = transformer(scope, node, ...) or node
          else
            res = node
          end
          if res == node then
            return node
          end
          node = res
        end
        return node
      end,
      bind = function(self, scope)
        return function(...)
          return self:transform(scope, ...)
        end
      end,
      __call = function(self, ...)
        return self:transform(...)
      end,
      can_transform = function(self, node)
        return self.transformers[ntype(node)] ~= nil
      end
    }
    _base_0.__index = _base_0
    if _parent_0 then
      setmetatable(_base_0, _parent_0.__base)
    end
    local _class_0 = setmetatable({
      __init = function(self, transformers)
        self.transformers = transformers
        self.seen_nodes = setmetatable({ }, {
          __mode = "k"
        })
      end,
      __base = _base_0,
      __name = "Transformer",
      __parent = _parent_0
    }, {
      __index = function(cls, name)
        local val = rawget(_base_0, name)
        if val == nil and _parent_0 then
          return _parent_0[name]
        else
          return val
        end
      end,
      __call = function(cls, ...)
        local _self_0 = setmetatable({}, _base_0)
        cls.__init(_self_0, ...)
        return _self_0
      end
    })
    _base_0.__class = _class_0
    if _parent_0 and _parent_0.__inherited then
      _parent_0.__inherited(_parent_0, _class_0)
    end
    Transformer = _class_0
  end
  local construct_comprehension
  construct_comprehension = function(inner, clauses)
    local current_stms = inner
    for _, clause in reversed(clauses) do
      local t = clause[1]
      local _exp_0 = t
      if "for" == _exp_0 then
        local name, bounds
        do
          local _obj_0 = clause
          _, name, bounds = _obj_0[1], _obj_0[2], _obj_0[3]
        end
        current_stms = {
          "for",
          name,
          bounds,
          current_stms
        }
      elseif "foreach" == _exp_0 then
        local names, iter
        do
          local _obj_0 = clause
          _, names, iter = _obj_0[1], _obj_0[2], _obj_0[3]
        end
        current_stms = {
          "foreach",
          names,
          {
            iter
          },
          current_stms
        }
      elseif "when" == _exp_0 then
        local cond
        do
          local _obj_0 = clause
          _, cond = _obj_0[1], _obj_0[2]
        end
        current_stms = {
          "if",
          cond,
          current_stms
        }
      else
        current_stms = error("Unknown comprehension clause: " .. t)
      end
      current_stms = {
        current_stms
      }
    end
    return current_stms[1]
  end
  local Statement = Transformer({
    root_stms = function(self, body)
      return apply_to_last(body, implicitly_return(self))
    end,
    declare_glob = function(self, node)
      local names = extract_declarations(self)
      if node[2] == "^" then
        names = (function()
          local _accum_0 = { }
          local _len_0 = 1
          local _list_0 = names
          for _index_0 = 1, #_list_0 do
            local _continue_0 = false
            repeat
              local name = _list_0[_index_0]
              if not (name:match("^%u")) then
                _continue_0 = true
                break
              end
              local _value_0 = name
              _accum_0[_len_0] = _value_0
              _len_0 = _len_0 + 1
              _continue_0 = true
            until true
            if not _continue_0 then
              break
            end
          end
          return _accum_0
        end)()
      end
      return {
        "declare",
        names
      }
    end,
    assign = function(self, node)
      local names, values = unpack(node, 2)
      local transformed
      if #values == 1 then
        local value = values[1]
        local t = ntype(value)
        if t == "decorated" then
          value = self.transform.statement(value)
          t = ntype(value)
        end
        if types.cascading[t] then
          local ret
          ret = function(stm)
            if types.is_value(stm) then
              return {
                "assign",
                names,
                {
                  stm
                }
              }
            else
              return stm
            end
          end
          transformed = build.group({
            {
              "declare",
              names
            },
            self.transform.statement(value, ret, node)
          })
        end
      end
      node = transformed or node
      if destructure.has_destructure(names) then
        return destructure.split_assign(node)
      end
      return node
    end,
    continue = function(self, node)
      local continue_name = self:send("continue")
      if not (continue_name) then
        error("continue must be inside of a loop")
      end
      return build.group({
        build.assign_one(continue_name, "true"),
        {
          "break"
        }
      })
    end,
    export = function(self, node)
      if #node > 2 then
        if node[2] == "class" then
          local cls = smart_node(node[3])
          return build.group({
            {
              "export",
              {
                cls.name
              }
            },
            cls
          })
        else
          return build.group({
            node,
            build.assign({
              names = node[2],
              values = node[3]
            })
          })
        end
      else
        return nil
      end
    end,
    update = function(self, node)
      local _, name, op, exp = unpack(node)
      local op_final = op:match("^(.+)=$")
      if not op_final then
        error("Unknown op: " .. op)
      end
      if not (value_is_singular(exp)) then
        exp = {
          "parens",
          exp
        }
      end
      return build.assign_one(name, {
        "exp",
        name,
        op_final,
        exp
      })
    end,
    import = function(self, node)
      local _, names, source = unpack(node)
      local stubs = (function()
        local _accum_0 = { }
        local _len_0 = 1
        local _list_0 = names
        for _index_0 = 1, #_list_0 do
          local name = _list_0[_index_0]
          if type(name) == "table" then
            _accum_0[_len_0] = name
          else
            _accum_0[_len_0] = {
              "dot",
              name
            }
          end
          _len_0 = _len_0 + 1
        end
        return _accum_0
      end)()
      local real_names = (function()
        local _accum_0 = { }
        local _len_0 = 1
        local _list_0 = names
        for _index_0 = 1, #_list_0 do
          local name = _list_0[_index_0]
          _accum_0[_len_0] = type(name) == "table" and name[2] or name
          _len_0 = _len_0 + 1
        end
        return _accum_0
      end)()
      if type(source) == "string" then
        return build.assign({
          names = real_names,
          values = (function()
            local _accum_0 = { }
            local _len_0 = 1
            local _list_0 = stubs
            for _index_0 = 1, #_list_0 do
              local stub = _list_0[_index_0]
              _accum_0[_len_0] = build.chain({
                base = source,
                stub
              })
              _len_0 = _len_0 + 1
            end
            return _accum_0
          end)()
        })
      else
        local source_name = NameProxy("table")
        return build.group({
          {
            "declare",
            real_names
          },
          build["do"]({
            build.assign_one(source_name, source),
            build.assign({
              names = real_names,
              values = (function()
                local _accum_0 = { }
                local _len_0 = 1
                local _list_0 = stubs
                for _index_0 = 1, #_list_0 do
                  local stub = _list_0[_index_0]
                  _accum_0[_len_0] = build.chain({
                    base = source_name,
                    stub
                  })
                  _len_0 = _len_0 + 1
                end
                return _accum_0
              end)()
            })
          })
        })
      end
    end,
    comprehension = function(self, node, action)
      local _, exp, clauses = unpack(node)
      action = action or function(exp)
        return {
          exp
        }
      end
      return construct_comprehension(action(exp), clauses)
    end,
    ["do"] = function(self, node, ret)
      if ret then
        node[2] = apply_to_last(node[2], ret)
      end
      return node
    end,
    decorated = function(self, node)
      local stm, dec = unpack(node, 2)
      local wrapped
      local _exp_0 = dec[1]
      if "if" == _exp_0 then
        local cond, fail = unpack(dec, 2)
        if fail then
          fail = {
            "else",
            {
              fail
            }
          }
        end
        wrapped = {
          "if",
          cond,
          {
            stm
          },
          fail
        }
      elseif "unless" == _exp_0 then
        wrapped = {
          "unless",
          dec[2],
          {
            stm
          }
        }
      elseif "comprehension" == _exp_0 then
        wrapped = {
          "comprehension",
          stm,
          dec[2]
        }
      else
        wrapped = error("Unknown decorator " .. dec[1])
      end
      if ntype(stm) == "assign" then
        wrapped = build.group({
          build.declare({
            names = (function()
              local _accum_0 = { }
              local _len_0 = 1
              local _list_0 = stm[2]
              for _index_0 = 1, #_list_0 do
                local name = _list_0[_index_0]
                if type(name) == "string" then
                  _accum_0[_len_0] = name
                  _len_0 = _len_0 + 1
                end
              end
              return _accum_0
            end)()
          }),
          wrapped
        })
      end
      return wrapped
    end,
    unless = function(self, node)
      return {
        "if",
        {
          "not",
          {
            "parens",
            node[2]
          }
        },
        unpack(node, 3)
      }
    end,
    ["if"] = function(self, node, ret)
      if ntype(node[2]) == "assign" then
        local _, assign, body = unpack(node)
        if destructure.has_destructure(assign[2]) then
          local name = NameProxy("des")
          body = {
            destructure.build_assign(assign[2][1], name),
            build.group(node[3])
          }
          return build["do"]({
            build.assign_one(name, assign[3][1]),
            {
              "if",
              name,
              body,
              unpack(node, 4)
            }
          })
        else
          local name = assign[2][1]
          return build["do"]({
            assign,
            {
              "if",
              name,
              unpack(node, 3)
            }
          })
        end
      end
      node = expand_elseif_assign(node)
      if ret then
        smart_node(node)
        node['then'] = apply_to_last(node['then'], ret)
        for i = 4, #node do
          local case = node[i]
          local body_idx = #node[i]
          case[body_idx] = apply_to_last(case[body_idx], ret)
        end
      end
      return node
    end,
    with = function(self, node, ret)
      local _, exp, block = unpack(node)
      local scope_name = NameProxy("with")
      local named_assign
      if ntype(exp) == "assign" then
        local names, values = unpack(exp, 2)
        local assign_name = names[1]
        exp = values[1]
        values[1] = scope_name
        named_assign = {
          "assign",
          names,
          values
        }
      end
      return build["do"]({
        Run(function(self)
          return self:set("scope_var", scope_name)
        end),
        build.assign_one(scope_name, exp),
        build.group({
          named_assign
        }),
        build.group(block),
        (function()
          if ret then
            return ret(scope_name)
          end
        end)()
      })
    end,
    foreach = function(self, node)
      smart_node(node)
      local source = unpack(node.iter)
      local destructures = { }
      node.names = (function()
        local _accum_0 = { }
        local _len_0 = 1
        for i, name in ipairs(node.names) do
          if ntype(name) == "table" then
            do
              local _with_0 = NameProxy("des")
              local proxy = _with_0
              insert(destructures, destructure.build_assign(name, proxy))
              _accum_0[_len_0] = _with_0
            end
          else
            _accum_0[_len_0] = name
          end
          _len_0 = _len_0 + 1
        end
        return _accum_0
      end)()
      if next(destructures) then
        insert(destructures, build.group(node.body))
        node.body = destructures
      end
      if ntype(source) == "unpack" then
        local list = source[2]
        local index_name = NameProxy("index")
        local list_name = NameProxy("list")
        local slice_var = nil
        local bounds
        if is_slice(list) then
          local slice = list[#list]
          table.remove(list)
          table.remove(slice, 1)
          if slice[2] and slice[2] ~= "" then
            local max_tmp_name = NameProxy("max")
            slice_var = build.assign_one(max_tmp_name, slice[2])
            slice[2] = {
              "exp",
              max_tmp_name,
              "<",
              0,
              "and",
              {
                "length",
                list_name
              },
              "+",
              max_tmp_name,
              "or",
              max_tmp_name
            }
          else
            slice[2] = {
              "length",
              list_name
            }
          end
          bounds = slice
        else
          bounds = {
            1,
            {
              "length",
              list_name
            }
          }
        end
        return build.group({
          build.assign_one(list_name, list),
          slice_var,
          build["for"]({
            name = index_name,
            bounds = bounds,
            body = {
              {
                "assign",
                node.names,
                {
                  list_name:index(index_name)
                }
              },
              build.group(node.body)
            }
          })
        })
      end
      node.body = with_continue_listener(node.body)
    end,
    ["while"] = function(self, node)
      smart_node(node)
      node.body = with_continue_listener(node.body)
    end,
    ["for"] = function(self, node)
      smart_node(node)
      node.body = with_continue_listener(node.body)
    end,
    switch = function(self, node, ret)
      local _, exp, conds = unpack(node)
      local exp_name = NameProxy("exp")
      local convert_cond
      convert_cond = function(cond)
        local t, case_exps, body = unpack(cond)
        local out = { }
        insert(out, t == "case" and "elseif" or "else")
        if t ~= "else" then
          local cond_exp = { }
          for i, case in ipairs(case_exps) do
            if i == 1 then
              insert(cond_exp, "exp")
            else
              insert(cond_exp, "or")
            end
            if not (value_is_singular(case)) then
              case = {
                "parens",
                case
              }
            end
            insert(cond_exp, {
              "exp",
              case,
              "==",
              exp_name
            })
          end
          insert(out, cond_exp)
        else
          body = case_exps
        end
        if ret then
          body = apply_to_last(body, ret)
        end
        insert(out, body)
        return out
      end
      local first = true
      local if_stm = {
        "if"
      }
      local _list_0 = conds
      for _index_0 = 1, #_list_0 do
        local cond = _list_0[_index_0]
        local if_cond = convert_cond(cond)
        if first then
          first = false
          insert(if_stm, if_cond[2])
          insert(if_stm, if_cond[3])
        else
          insert(if_stm, if_cond)
        end
      end
      return build.group({
        build.assign_one(exp_name, exp),
        if_stm
      })
    end,
    class = function(self, node, ret, parent_assign)
      local _, name, parent_val, body = unpack(node)
      local statements = { }
      local properties = { }
      local _list_0 = body
      for _index_0 = 1, #_list_0 do
        local item = _list_0[_index_0]
        local _exp_0 = item[1]
        if "stm" == _exp_0 then
          insert(statements, item[2])
        elseif "props" == _exp_0 then
          local _list_1 = item
          for _index_1 = 2, #_list_1 do
            local tuple = _list_1[_index_1]
            if ntype(tuple[1]) == "self" then
              insert(statements, build.assign_one(unpack(tuple)))
            else
              insert(properties, tuple)
            end
          end
        end
      end
      local constructor
      properties = (function()
        local _accum_0 = { }
        local _len_0 = 1
        local _list_1 = properties
        for _index_0 = 1, #_list_1 do
          local _continue_0 = false
          repeat
            local tuple = _list_1[_index_0]
            local key = tuple[1]
            local _value_0
            if key[1] == "key_literal" and key[2] == constructor_name then
              constructor = tuple[2]
              _continue_0 = true
              break
            else
              _value_0 = tuple
            end
            _accum_0[_len_0] = _value_0
            _len_0 = _len_0 + 1
            _continue_0 = true
          until true
          if not _continue_0 then
            break
          end
        end
        return _accum_0
      end)()
      local parent_cls_name = NameProxy("parent")
      local base_name = NameProxy("base")
      local self_name = NameProxy("self")
      local cls_name = NameProxy("class")
      if not (constructor) then
        constructor = build.fndef({
          args = {
            {
              "..."
            }
          },
          arrow = "fat",
          body = {
            build["if"]({
              cond = parent_cls_name,
              ["then"] = {
                build.chain({
                  base = "super",
                  {
                    "call",
                    {
                      "..."
                    }
                  }
                })
              }
            })
          }
        })
      end
      local real_name = name or parent_assign and parent_assign[2][1]
      local _exp_0 = ntype(real_name)
      if "chain" == _exp_0 then
        local last = real_name[#real_name]
        local _exp_1 = ntype(last)
        if "dot" == _exp_1 then
          real_name = {
            "string",
            '"',
            last[2]
          }
        elseif "index" == _exp_1 then
          real_name = last[2]
        else
          real_name = "nil"
        end
      elseif "nil" == _exp_0 then
        real_name = "nil"
      else
        real_name = {
          "string",
          '"',
          real_name
        }
      end
      local cls = build.table({
        {
          "__init",
          constructor
        },
        {
          "__base",
          base_name
        },
        {
          "__name",
          real_name
        },
        {
          "__parent",
          parent_cls_name
        }
      })
      local class_lookup = build["if"]({
        cond = {
          "exp",
          "val",
          "==",
          "nil",
          "and",
          parent_cls_name
        },
        ["then"] = {
          parent_cls_name:index("name")
        }
      })
      insert(class_lookup, {
        "else",
        {
          "val"
        }
      })
      local cls_mt = build.table({
        {
          "__index",
          build.fndef({
            args = {
              {
                "cls"
              },
              {
                "name"
              }
            },
            body = {
              build.assign_one(LocalName("val"), build.chain({
                base = "rawget",
                {
                  "call",
                  {
                    base_name,
                    "name"
                  }
                }
              })),
              class_lookup
            }
          })
        },
        {
          "__call",
          build.fndef({
            args = {
              {
                "cls"
              },
              {
                "..."
              }
            },
            body = {
              build.assign_one(self_name, build.chain({
                base = "setmetatable",
                {
                  "call",
                  {
                    "{}",
                    base_name
                  }
                }
              })),
              build.chain({
                base = "cls.__init",
                {
                  "call",
                  {
                    self_name,
                    "..."
                  }
                }
              }),
              self_name
            }
          })
        }
      })
      cls = build.chain({
        base = "setmetatable",
        {
          "call",
          {
            cls,
            cls_mt
          }
        }
      })
      local value = nil
      do
        local _with_0 = build
        local out_body = {
          Run(function(self)
            if name then
              self:put_name(name)
            end
            return self:set("super", function(block, chain)
              if chain then
                local slice = (function()
                  local _accum_0 = { }
                  local _len_0 = 1
                  local _list_1 = chain
                  for _index_0 = 3, #_list_1 do
                    local item = _list_1[_index_0]
                    _accum_0[_len_0] = item
                    _len_0 = _len_0 + 1
                  end
                  return _accum_0
                end)()
                local new_chain = {
                  "chain",
                  parent_cls_name
                }
                local head = slice[1]
                if head == nil then
                  return parent_cls_name
                end
                local _exp_1 = head[1]
                if "call" == _exp_1 then
                  local calling_name = block:get("current_block")
                  slice[1] = {
                    "call",
                    {
                      "self",
                      unpack(head[2])
                    }
                  }
                  if ntype(calling_name) == "key_literal" then
                    insert(new_chain, {
                      "dot",
                      calling_name[2]
                    })
                  else
                    insert(new_chain, {
                      "index",
                      calling_name
                    })
                  end
                elseif "colon" == _exp_1 then
                  local call = head[3]
                  insert(new_chain, {
                    "dot",
                    head[2]
                  })
                  slice[1] = {
                    "call",
                    {
                      "self",
                      unpack(call[2])
                    }
                  }
                end
                local _list_1 = slice
                for _index_0 = 1, #_list_1 do
                  local item = _list_1[_index_0]
                  insert(new_chain, item)
                end
                return new_chain
              else
                return parent_cls_name
              end
            end)
          end),
          {
            "declare_glob",
            "*"
          },
          _with_0.assign_one(parent_cls_name, parent_val == "" and "nil" or parent_val),
          _with_0.assign_one(base_name, {
            "table",
            properties
          }),
          _with_0.assign_one(base_name:chain("__index"), base_name),
          _with_0["if"]({
            cond = parent_cls_name,
            ["then"] = {
              _with_0.chain({
                base = "setmetatable",
                {
                  "call",
                  {
                    base_name,
                    _with_0.chain({
                      base = parent_cls_name,
                      {
                        "dot",
                        "__base"
                      }
                    })
                  }
                }
              })
            }
          }),
          _with_0.assign_one(cls_name, cls),
          _with_0.assign_one(base_name:chain("__class"), cls_name),
          _with_0.group((function()
            if #statements > 0 then
              return {
                _with_0.assign_one(LocalName("self"), cls_name),
                _with_0.group(statements)
              }
            end
          end)()),
          _with_0["if"]({
            cond = {
              "exp",
              parent_cls_name,
              "and",
              parent_cls_name:chain("__inherited")
            },
            ["then"] = {
              parent_cls_name:chain("__inherited", {
                "call",
                {
                  parent_cls_name,
                  cls_name
                }
              })
            }
          }),
          _with_0.group((function()
            if name then
              return {
                _with_0.assign_one(name, cls_name)
              }
            end
          end)()),
          (function()
            if ret then
              return ret(cls_name)
            end
          end)()
        }
        value = _with_0.group({
          _with_0.group((function()
            if ntype(name) == "value" then
              return {
                _with_0.declare({
                  names = {
                    name
                  }
                })
              }
            end
          end)()),
          _with_0["do"](out_body)
        })
      end
      return value
    end
  })
  local Accumulator
  do
    local _parent_0 = nil
    local _base_0 = {
      body_idx = {
        ["for"] = 4,
        ["while"] = 3,
        foreach = 4
      },
      convert = function(self, node)
        local index = self.body_idx[ntype(node)]
        node[index] = self:mutate_body(node[index])
        return self:wrap(node)
      end,
      wrap = function(self, node)
        return build.block_exp({
          build.assign_one(self.accum_name, build.table()),
          build.assign_one(self.len_name, 1),
          node,
          self.accum_name
        })
      end,
      mutate_body = function(self, body)
        local single_stm = is_singular(body)
        local val
        if single_stm and types.is_value(single_stm) then
          body = { }
          val = single_stm
        else
          body = apply_to_last(body, function(n)
            if types.is_value(n) then
              return build.assign_one(self.value_name, n)
            else
              return build.group({
                {
                  "declare",
                  {
                    self.value_name
                  }
                },
                n
              })
            end
          end)
          val = self.value_name
        end
        local update = {
          build.assign_one(self.accum_name:index(self.len_name), val),
          {
            "update",
            self.len_name,
            "+=",
            1
          }
        }
        insert(body, build.group(update))
        return body
      end
    }
    _base_0.__index = _base_0
    if _parent_0 then
      setmetatable(_base_0, _parent_0.__base)
    end
    local _class_0 = setmetatable({
      __init = function(self)
        self.accum_name = NameProxy("accum")
        self.value_name = NameProxy("value")
        self.len_name = NameProxy("len")
      end,
      __base = _base_0,
      __name = "Accumulator",
      __parent = _parent_0
    }, {
      __index = function(cls, name)
        local val = rawget(_base_0, name)
        if val == nil and _parent_0 then
          return _parent_0[name]
        else
          return val
        end
      end,
      __call = function(cls, ...)
        local _self_0 = setmetatable({}, _base_0)
        cls.__init(_self_0, ...)
        return _self_0
      end
    })
    _base_0.__class = _class_0
    if _parent_0 and _parent_0.__inherited then
      _parent_0.__inherited(_parent_0, _class_0)
    end
    Accumulator = _class_0
  end
  local default_accumulator
  default_accumulator = function(self, node)
    return Accumulator():convert(node)
  end
  implicitly_return = function(scope)
    local is_top = true
    local fn
    fn = function(stm)
      local t = ntype(stm)
      if t == "decorated" then
        stm = scope.transform.statement(stm)
        t = ntype(stm)
      end
      if types.cascading[t] then
        is_top = false
        return scope.transform.statement(stm, fn)
      elseif types.manual_return[t] or not types.is_value(stm) then
        if is_top and t == "return" and stm[2] == "" then
          return nil
        else
          return stm
        end
      else
        if t == "comprehension" and not types.comprehension_has_value(stm) then
          return stm
        else
          return {
            "return",
            stm
          }
        end
      end
    end
    return fn
  end
  local Value = Transformer({
    ["for"] = default_accumulator,
    ["while"] = default_accumulator,
    foreach = default_accumulator,
    ["do"] = function(self, node)
      return build.block_exp(node[2])
    end,
    decorated = function(self, node)
      return self.transform.statement(node)
    end,
    class = function(self, node)
      return build.block_exp({
        node
      })
    end,
    string = function(self, node)
      local delim = node[2]
      local convert_part
      convert_part = function(part)
        if type(part) == "string" or part == nil then
          return {
            "string",
            delim,
            part or ""
          }
        else
          return build.chain({
            base = "tostring",
            {
              "call",
              {
                part[2]
              }
            }
          })
        end
      end
      if #node <= 3 then
        return (function()
          if type(node[3]) == "string" then
            return node
          else
            return convert_part(node[3])
          end
        end)()
      end
      local e = {
        "exp",
        convert_part(node[3])
      }
      for i = 4, #node do
        insert(e, "..")
        insert(e, convert_part(node[i]))
      end
      return e
    end,
    comprehension = function(self, node)
      local a = Accumulator()
      node = self.transform.statement(node, function(exp)
        return a:mutate_body({
          exp
        })
      end)
      return a:wrap(node)
    end,
    tblcomprehension = function(self, node)
      local _, explist, clauses = unpack(node)
      local key_exp, value_exp = unpack(explist)
      local accum = NameProxy("tbl")
      local inner
      if value_exp then
        local dest = build.chain({
          base = accum,
          {
            "index",
            key_exp
          }
        })
        inner = {
          build.assign_one(dest, value_exp)
        }
      else
        local key_name, val_name = NameProxy("key"), NameProxy("val")
        local dest = build.chain({
          base = accum,
          {
            "index",
            key_name
          }
        })
        inner = {
          build.assign({
            names = {
              key_name,
              val_name
            },
            values = {
              key_exp
            }
          }),
          build.assign_one(dest, val_name)
        }
      end
      return build.block_exp({
        build.assign_one(accum, build.table()),
        construct_comprehension(inner, clauses),
        accum
      })
    end,
    fndef = function(self, node)
      smart_node(node)
      node.body = apply_to_last(node.body, implicitly_return(self))
      node.body = {
        Run(function(self)
          return self:listen("varargs", function() end)
        end),
        unpack(node.body)
      }
      return node
    end,
    ["if"] = function(self, node)
      return build.block_exp({
        node
      })
    end,
    unless = function(self, node)
      return build.block_exp({
        node
      })
    end,
    with = function(self, node)
      return build.block_exp({
        node
      })
    end,
    switch = function(self, node)
      return build.block_exp({
        node
      })
    end,
    chain = function(self, node)
      local stub = node[#node]
      for i = 3, #node do
        local part = node[i]
        if ntype(part) == "dot" and data.lua_keywords[part[2]] then
          node[i] = {
            "index",
            {
              "string",
              '"',
              part[2]
            }
          }
        end
      end
      if ntype(node[2]) == "string" then
        node[2] = {
          "parens",
          node[2]
        }
      elseif type(stub) == "table" and stub[1] == "colon_stub" then
        table.remove(node, #node)
        local base_name = NameProxy("base")
        local fn_name = NameProxy("fn")
        local is_super = node[2] == "super"
        return self.transform.value(build.block_exp({
          build.assign({
            names = {
              base_name
            },
            values = {
              node
            }
          }),
          build.assign({
            names = {
              fn_name
            },
            values = {
              build.chain({
                base = base_name,
                {
                  "dot",
                  stub[2]
                }
              })
            }
          }),
          build.fndef({
            args = {
              {
                "..."
              }
            },
            body = {
              build.chain({
                base = fn_name,
                {
                  "call",
                  {
                    is_super and "self" or base_name,
                    "..."
                  }
                }
              })
            }
          })
        }))
      end
    end,
    block_exp = function(self, node)
      local _, body = unpack(node)
      local fn = nil
      local arg_list = { }
      fn = smart_node(build.fndef({
        body = {
          Run(function(self)
            return self:listen("varargs", function()
              insert(arg_list, "...")
              insert(fn.args, {
                "..."
              })
              return self:unlisten("varargs")
            end)
          end),
          unpack(body)
        }
      }))
      return build.chain({
        base = {
          "parens",
          fn
        },
        {
          "call",
          arg_list
        }
      })
    end
  })
  return {
    Statement = Statement,
    Value = Value,
    Run = Run
  }
  
end
package.preload['moonscript.types'] = function()
  local util = require("moonscript.util")
  local data = require("moonscript.data")
  local insert = table.insert
  local unpack = util.unpack
  local manual_return = data.Set({
    "foreach",
    "for",
    "while",
    "return"
  })
  local cascading = data.Set({
    "if",
    "unless",
    "with",
    "switch",
    "class",
    "do"
  })
  local ntype
  ntype = function(node)
    local _exp_0 = type(node)
    if "nil" == _exp_0 then
      return "nil"
    elseif "table" == _exp_0 then
      return node[1]
    else
      return "value"
    end
  end
  local mtype
  do
    local moon_type = util.moon.type
    mtype = function(val)
      local mt = getmetatable(val)
      if mt and mt.smart_node then
        return "table"
      end
      return moon_type(val)
    end
  end
  local has_value
  has_value = function(node)
    if ntype(node) == "chain" then
      local ctype = ntype(node[#node])
      return ctype ~= "call" and ctype ~= "colon"
    else
      return true
    end
  end
  local is_value
  is_value = function(stm)
    local compile = require("moonscript.compile")
    local transform = require("moonscript.transform")
    return compile.Block:is_value(stm) or transform.Value:can_transform(stm)
  end
  local comprehension_has_value
  comprehension_has_value = function(comp)
    return is_value(comp[2])
  end
  local value_is_singular
  value_is_singular = function(node)
    return type(node) ~= "table" or node[1] ~= "exp" or #node == 2
  end
  local is_slice
  is_slice = function(node)
    return ntype(node) == "chain" and ntype(node[#node]) == "slice"
  end
  local t = { }
  local node_types = {
    class = {
      {
        "name",
        "Tmp"
      },
      {
        "body",
        t
      }
    },
    fndef = {
      {
        "args",
        t
      },
      {
        "whitelist",
        t
      },
      {
        "arrow",
        "slim"
      },
      {
        "body",
        t
      }
    },
    foreach = {
      {
        "names",
        t
      },
      {
        "iter"
      },
      {
        "body",
        t
      }
    },
    ["for"] = {
      {
        "name"
      },
      {
        "bounds",
        t
      },
      {
        "body",
        t
      }
    },
    ["while"] = {
      {
        "cond",
        t
      },
      {
        "body",
        t
      }
    },
    assign = {
      {
        "names",
        t
      },
      {
        "values",
        t
      }
    },
    declare = {
      {
        "names",
        t
      }
    },
    ["if"] = {
      {
        "cond",
        t
      },
      {
        "then",
        t
      }
    }
  }
  local build_table
  build_table = function()
    local key_table = { }
    for node_name, args in pairs(node_types) do
      local index = { }
      for i, tuple in ipairs(args) do
        local prop_name = tuple[1]
        index[prop_name] = i + 1
      end
      key_table[node_name] = index
    end
    return key_table
  end
  local key_table = build_table()
  local make_builder
  make_builder = function(name)
    local spec = node_types[name]
    if not spec then
      error("don't know how to build node: " .. name)
    end
    return function(props)
      if props == nil then
        props = { }
      end
      local node = {
        name
      }
      for i, arg in ipairs(spec) do
        local key, default_value = unpack(arg)
        local val
        if props[key] then
          val = props[key]
        else
          val = default_value
        end
        if val == t then
          val = { }
        end
        node[i + 1] = val
      end
      return node
    end
  end
  local build = nil
  build = setmetatable({
    group = function(body)
      if body == nil then
        body = { }
      end
      return {
        "group",
        body
      }
    end,
    ["do"] = function(body)
      return {
        "do",
        body
      }
    end,
    assign_one = function(name, value)
      return build.assign({
        names = {
          name
        },
        values = {
          value
        }
      })
    end,
    table = function(tbl)
      if tbl == nil then
        tbl = { }
      end
      local _list_0 = tbl
      for _index_0 = 1, #_list_0 do
        local tuple = _list_0[_index_0]
        if type(tuple[1]) == "string" then
          tuple[1] = {
            "key_literal",
            tuple[1]
          }
        end
      end
      return {
        "table",
        tbl
      }
    end,
    block_exp = function(body)
      return {
        "block_exp",
        body
      }
    end,
    chain = function(parts)
      local base = parts.base or error("expecting base property for chain")
      local node = {
        "chain",
        base
      }
      local _list_0 = parts
      for _index_0 = 1, #_list_0 do
        local part = _list_0[_index_0]
        insert(node, part)
      end
      return node
    end
  }, {
    __index = function(self, name)
      self[name] = make_builder(name)
      return rawget(self, name)
    end
  })
  local smart_node_mt = setmetatable({ }, {
    __index = function(self, node_type)
      local index = key_table[node_type]
      local mt = {
        smart_node = true,
        __index = function(node, key)
          if index[key] then
            return rawget(node, index[key])
          elseif type(key) == "string" then
            return error("unknown key: `" .. key .. "` on node type: `" .. ntype(node) .. "`")
          end
        end,
        __newindex = function(node, key, value)
          if index[key] then
            key = index[key]
          end
          return rawset(node, key, value)
        end
      }
      self[node_type] = mt
      return mt
    end
  })
  local smart_node
  smart_node = function(node)
    return setmetatable(node, smart_node_mt[ntype(node)])
  end
  return {
    ntype = ntype,
    smart_node = smart_node,
    build = build,
    is_value = is_value,
    is_slice = is_slice,
    manual_return = manual_return,
    cascading = cascading,
    value_is_singular = value_is_singular,
    comprehension_has_value = comprehension_has_value,
    has_value = has_value,
    mtype = mtype
  }
  
end
package.preload['moonscript.util'] = function()
  local concat = table.concat
  local unpack = unpack or table.unpack
  local type = type
  local moon = {
    is_object = function(value)
      return type(value) == "table" and value.__class
    end,
    is_a = function(thing, t)
      if not (type(thing) == "table") then
        return false
      end
      local cls = thing.__class
      while cls do
        if cls == t then
          return true
        end
        cls = cls.__parent
      end
      return false
    end,
    type = function(value)
      local base_type = type(value)
      if base_type == "table" then
        local cls = value.__class
        if cls then
          return cls
        end
      end
      return base_type
    end
  }
  local pos_to_line
  pos_to_line = function(str, pos)
    local line = 1
    for _ in str:sub(1, pos):gmatch("\n") do
      line = line + 1
    end
    return line
  end
  local trim
  trim = function(str)
    return str:match("^%s*(.-)%s*$")
  end
  local get_line
  get_line = function(str, line_num)
    for line in str:gmatch("([^\n]*)\n?") do
      if line_num == 1 then
        return line
      end
      line_num = line_num - 1
    end
  end
  local get_closest_line
  get_closest_line = function(str, line_num)
    local line = get_line(str, line_num)
    if (not line or trim(line) == "") and line_num > 1 then
      return get_closest_line(str, line_num - 1)
    else
      return line, line_num
    end
  end
  local reversed
  reversed = function(seq)
    return coroutine.wrap(function()
      for i = #seq, 1, -1 do
        coroutine.yield(i, seq[i])
      end
    end)
  end
  local split
  split = function(str, delim)
    if str == "" then
      return { }
    end
    str = str .. delim
    return (function()
      local _accum_0 = { }
      local _len_0 = 1
      for m in str:gmatch("(.-)" .. delim) do
        _accum_0[_len_0] = m
        _len_0 = _len_0 + 1
      end
      return _accum_0
    end)()
  end
  local dump
  dump = function(what)
    local seen = { }
    local _dump
    _dump = function(what, depth)
      if depth == nil then
        depth = 0
      end
      local t = type(what)
      if t == "string" then
        return '"' .. what .. '"\n'
      elseif t == "table" then
        if seen[what] then
          return "recursion(" .. tostring(what) .. ")...\n"
        end
        seen[what] = true
        depth = depth + 1
        local lines = (function()
          local _accum_0 = { }
          local _len_0 = 1
          for k, v in pairs(what) do
            _accum_0[_len_0] = (" "):rep(depth * 4) .. "[" .. tostring(k) .. "] = " .. _dump(v, depth)
            _len_0 = _len_0 + 1
          end
          return _accum_0
        end)()
        seen[what] = false
        return "{\n" .. concat(lines) .. (" "):rep((depth - 1) * 4) .. "}\n"
      else
        return tostring(what) .. "\n"
      end
    end
    return _dump(what)
  end
  local debug_posmap
  debug_posmap = function(posmap, moon_code, lua_code)
    local tuples = (function()
      local _accum_0 = { }
      local _len_0 = 1
      for k, v in pairs(posmap) do
        _accum_0[_len_0] = {
          k,
          v
        }
        _len_0 = _len_0 + 1
      end
      return _accum_0
    end)()
    table.sort(tuples, function(a, b)
      return a[1] < b[1]
    end)
    local lines = (function()
      local _accum_0 = { }
      local _len_0 = 1
      local _list_0 = tuples
      for _index_0 = 1, #_list_0 do
        local pair = _list_0[_index_0]
        local lua_line, pos = unpack(pair)
        local moon_line = pos_to_line(moon_code, pos)
        local lua_text = get_line(lua_code, lua_line)
        local moon_text = get_closest_line(moon_code, moon_line)
        local _value_0 = tostring(pos) .. "\t " .. tostring(lua_line) .. ":[ " .. tostring(trim(lua_text)) .. " ] >> " .. tostring(moon_line) .. ":[ " .. tostring(trim(moon_text)) .. " ]"
        _accum_0[_len_0] = _value_0
        _len_0 = _len_0 + 1
      end
      return _accum_0
    end)()
    return concat(lines, "\n")
  end
  local setfenv = setfenv or function(fn, env)
    local name
    local i = 1
    while true do
      name = debug.getupvalue(fn, i)
      if not name or name == "_ENV" then
        break
      end
      i = i + 1
    end
    if name then
      debug.upvaluejoin(fn, i, (function()
        return env
      end), 1)
    end
    return fn
  end
  local getfenv = getfenv or function(fn)
    local i = 1
    while true do
      local name, val = debug.getupvalue(fn, i)
      if not (name) then
        break
      end
      if name == "_ENV" then
        return val
      end
      i = i + 1
    end
    return nil
  end
  local get_options
  get_options = function(...)
    local count = select("#", ...)
    local opts = select(count, ...)
    if type(opts) == "table" then
      return opts, unpack({
        ...
      }, nil, count - 1)
    else
      return { }, ...
    end
  end
  return {
    moon = moon,
    pos_to_line = pos_to_line,
    get_closest_line = get_closest_line,
    get_line = get_line,
    reversed = reversed,
    trim = trim,
    split = split,
    dump = dump,
    debug_posmap = debug_posmap,
    getfenv = getfenv,
    setfenv = setfenv,
    get_options = get_options,
    unpack = unpack
  }
  
end
package.preload['moonscript.version'] = function()
  
  module("moonscript.version", package.seeall)
  
  version = "0.2.3-2"
  function print_version()
  	print("MoonScript version "..version)
  end
  
end
return package.preload["moonscript"]()