DMD 0.141发布

DMD 0.141发布

What's New for D 0.141

Dec 1, 2005

New/Changed Features

• The predefined version identifier D_InlineAsm has been changed to D_InlineAsm_X86. The former made no sense, and although it is still defined, it is deprecated.
• Added D code coverage analyzer.
• Added .mangleof property for types, which gives the 'mangled' type name as a string.

Bugs Fixed

• Fixed D.bugs/5643
• Fixed D.bugs/5668
• Fixed D.bugs/5687
• Fixed D.bugs/5690
• Fixed D.bugs/5673 (it now issues an OutOfMemoryException)
• Fixed D.bugs/5729
• Fixed dstress.run.c.creal_26_A regression.
• Fixed dstress.run.const_18 regression.

其中“D代码覆盖分析器”应该是很多人感兴趣的东西了，下面是一个例子(摘自http://digitalmars.com/d/code_coverage.html)：

/*  Eratosthenes Sieve prime number calculation.  */
 
bit flags[ 8191 ];
 
int  main()
{    int      i, prime, k, count, iter;

    printf( " 10 iterations\n " );
     for  (iter  =   1 ; iter  <=   10 ; iter ++ )
    {    count  =   0 ;
    flags[]  =   true ;
     for  (i  =   0 ; i  <  flags.length; i ++ )
    {    if  (flags[i])
        {    prime  =  i  +  i  +   3 ;
        k  =  i  +  prime;
         while  (k  <  flags.length)
        {
            flags[k]  =   false ;
            k  +=  prime;
        }
        count  +=   1 ;
        }
    }
    }
    printf ( " \n%d primes\n " , count);
     return   0 ;
}

编译、运行：

dmd sieve  - cov
sieve

结果如下：

       |/* Eratosthenes Sieve prime number calculation. */
       |
       |bit flags[8191];
       |
       |int main()
      5|{   int     i, prime, k, count, iter;
       |
      1|    printf("10 iterations\n");
     22|    for (iter = 1; iter <= 10; iter++)
     10|    {   count = 0;
     10|        flags[] = true;
163840|        for (i = 0; i < flags.length; i++)
  81910|        {   if (flags[i])
  18990|            {   prime = i + i + 3;
  18990|                k = i + prime;
168980|                while (k < flags.length)
       |                {
149990|                    flags[k] = false;
149990|                    k += prime;
       |                }
  18990|                count += 1;
       |            }
       |        }
       |    }
      1|    printf ("\n%d primes\n", count);
      1|    return 0;
       |}
sieve.d is 100% covered

另一个惊喜是mangleof属性，可以得到一个类型被编译器mangle后的名字。不知道mangle对应的中文翻译是什么？大概是“名字转换”吧。一点测试代码：

import std.stdio;

void  test();

void  test1( int  n);

void  test2( int  n);


void  main()
{
     void  function ( int ,  char []) f;
     void  function ( int ) f1;
     void  function () f2;
    writefln (f.mangleof);
    writefln (f1.mangleof);
    writefln (f2.mangleof);
    writefln ( int .mangleof);
     float  a;
    writefln (a.mangleof);
    writefln (( & test).mangleof);
    writefln (( & test1).mangleof);
    writefln (( & test2).mangleof);
    writefln ( void .mangleof);
}

编译执行结果如下：

PFiAaZv
PFiZv
PFZv
i
f
PFZv
PFiZv
PFiZv
v