Module: Laser::Parsers::Overload

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# File 'lib/laser/annotation_parser/overload_parser.rb', line 52

def _nt_function_type
  start_index = index
  if node_cache[:function_type].has_key?(index)
    cached = node_cache[:function_type][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  i1, s1 = index, []
  r2 = _nt_parenthesized_type_list
  s1 << r2
  if r2
    s3, i3 = [], index
    loop do
      r4 = _nt_space
      if r4
        s3 << r4
      else
        break
      end
    end
    r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
    s1 << r3
    if r3
      if has_terminal?('->', false, index)
        r5 = instantiate_node(SyntaxNode,input, index...(index + 2))
        @index += 2
      else
        terminal_parse_failure('->')
        r5 = nil
      end
      s1 << r5
      if r5
        s6, i6 = [], index
        loop do
          r7 = _nt_space
          if r7
            s6 << r7
          else
            break
          end
        end
        r6 = instantiate_node(SyntaxNode,input, i6...index, s6)
        s1 << r6
        if r6
          r8 = _nt_type
          s1 << r8
        end
      end
    end
  end
  if s1.last
    r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
    r1.extend(FunctionType0)
    r1.extend(FunctionType1)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    i9, s9 = index, []
    r10 = _nt_parenthesized_type_list
    s9 << r10
    if r10
      s11, i11 = [], index
      loop do
        r12 = _nt_space
        if r12
          s11 << r12
        else
          break
        end
      end
      r11 = instantiate_node(SyntaxNode,input, i11...index, s11)
      s9 << r11
      if r11
        r13 = _nt_type
        s9 << r13
      end
    end
    if s9.last
      r9 = instantiate_node(SyntaxNode,input, i9...index, s9)
      r9.extend(FunctionType2)
      r9.extend(FunctionType3)
    else
      @index = i9
      r9 = nil
    end
    if r9
      r0 = r9
    else
      @index = i0
      r0 = nil
    end
  end

  node_cache[:function_type][start_index] = r0

  r0
end