如何将Ruby inlineC代码分离到多个文件？

我希望将MATCH宏和位图移动到一个单独的文件中，因为我使用了这些位置，并且我希望避免重复代码。如何做到这一点

require 'inline'

# Class to calculate the Levenshtein distance between two
# given strings.
# http://en.wikipedia.org/wiki/Levenshtein_distance
class Levenshtein
  BYTES_IN_INT = 4

  def self.distance(s, t)
    return 0        if s == t;
    return t.length if s.length == 0;
    return s.length if t.length == 0;

    v0 = "\0" * (t.length + 1) * BYTES_IN_INT
    v1 = "\0" * (t.length + 1) * BYTES_IN_INT

    l = self.new
    l.distance_C(s, t, s.length, t.length, v0, v1)
  end

  # >>>>>>>>>>>>>>> RubyInline C code <<<<<<<<<<<<<<<

  inline do |builder|
    # Macro for matching nucleotides including ambiguity codes.
    builder.prefix %{
      #define MATCH(A,B) ((bitmap[A] & bitmap[B]) != 0)
    }

    # Bitmap for matching nucleotides including ambiguity codes.
    # For each value bits are set from the left: bit pos 1 for A,
    # bit pos 2 for T, bit pos 3 for C, and bit pos 4 for G.
    builder.prefix %{
      char bitmap[256] = {
          0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
          0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
          0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
          0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
          0, 1,14, 4,11, 0, 0, 8, 7, 0, 0,10, 0, 5,15, 0,
          0, 0, 9,12, 2, 2,13, 3, 0, 6, 0, 0, 0, 0, 0, 0,
          0, 1,14, 4,11, 0, 0, 8, 7, 0, 0,10, 0, 5,15, 0,
          0, 0, 9,12, 2, 2,13, 3, 0, 6, 0, 0, 0, 0, 0, 0,
          0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
          0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
          0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
          0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
          0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
          0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
          0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
          0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
      };
    }

    builder.prefix %{
      unsigned int min(unsigned int a, unsigned int b, unsigned int c)
      {
          unsigned int m = a;

          if (m > b) m = b;
          if (m > c) m = c;

          return m;
      }
    }

    builder.c %{
      VALUE distance_C(
        VALUE _s,       // string
        VALUE _t,       // string
        VALUE _s_len,   // string length
        VALUE _t_len,   // string length
        VALUE _v0,      // score vector
        VALUE _v1       // score vector
      )
      {
        char         *s     = (char *) StringValuePtr(_s);
        char         *t     = (char *) StringValuePtr(_t);
        unsigned int  s_len = FIX2UINT(_s_len);
        unsigned int  t_len = FIX2UINT(_t_len);
        unsigned int  *v0   = (unsigned int *) StringValuePtr(_v0);
        unsigned int  *v1   = (unsigned int *) StringValuePtr(_v1);

        unsigned int i    = 0;
        unsigned int j    = 0;
        unsigned int cost = 0;

        for (i = 0; i < t_len + 1; i++)
          v0[i] = i;

        for (i = 0; i < s_len; i++)
        {
          v1[0] = i + 1;

          for (j = 0; j < t_len; j++)
          {
            cost = (MATCH(s[i], t[j])) ? 0 : 1;
            v1[j + 1] = min(v1[j] + 1, v0[j + 1] + 1, v0[j] + cost);
          }

          for (j = 0; j < t_len + 1; j++)
            v0[j] = v1[j];
        }

        return UINT2NUM(v1[t_len]);
      }
    }
  end
end

要求“内联”
#类来计算两个对象之间的Levenshtein距离
#给定字符串。
# http://en.wikipedia.org/wiki/Levenshtein_distance
Levenshtein类
字节\u IN\u INT=4
def自身距离（s、t）
如果s==t，则返回0；
如果s.length==0，则返回t.length；
如果t.length==0，则返回s.length；
v0=“\0”*（t.length+1）*字节数
v1=“\0”*（t.length+1）*字节数
l=自我更新
l、 距离C（s，t，s长度，t长度，v0，v1）
结束
#>>>>>>>>>>>>>>>>>>>RubyLine C代码
builder.prefix
只是一个方法调用，因此您可以创建一个Ruby方法，用宏和字符数组调用它，然后将它添加到任何想要内联使用这些C代码段的类中。e、 g

module MixinCommonC
  def add_match_macro inline_builder
    inline_builder.prefix %{
      #define MATCH(A,B) ((bitmap[A] & bitmap[B]) != 0)
    }
  end
end

在示例代码中，对其进行以下更改：

开始上课时

class Levenshtein
  extend MixinCommonC

（它是
extend
而不是
include
，因为
inline
方法是针对类调用的，所以只能访问块内的类方法）

当前可以调用
builder.prefix
：

add_match_macro( builder )

嗯，我没能让它工作：我的错误-使用
extend
而不是
include
，因为
inline
命令是针对类调用的，所以需要类方法
include
用于混合实例方法。