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
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