• Paul D Anderson (19/19) Apr 11 2015 Is there a way to return the name of a function (a string) from a
• Marco Leise (9/36) Apr 11 2015 Nope, that would require that fp not only contains a pointer
• Paul D Anderson (3/37) Apr 11 2015 Okay, thanks, I can see that.
• bearophile (5/7) Apr 11 2015 Perhaps creating a string[void*] AA and initializing with all the

"Paul D Anderson" <claude.reins msnmail.com> writes:

Is there a way to return the name of a function (a string) from a 
pointer to that function?

Function pointer example from D Reference:
---
int function() fp;

void test()
{
     static int a = 7;
     static int foo() { return a + 3; }

     fp = &foo;
}

void bar()
{
     test();
     int i = fp();       // i is set to 10
}
---

Can I get "foo" from fp?

Paul

Marco Leise <Marco.Leise gmx.de> writes:

Am Sat, 11 Apr 2015 18:28:35 +0000
schrieb "Paul D Anderson" <claude.reins msnmail.com>:

 Is there a way to return the name of a function (a string) from a 
 pointer to that function?
 
 Function pointer example from D Reference:
 ---
 int function() fp;
 
 void test()
 {
      static int a = 7;
      static int foo() { return a + 3; }
 
      fp = &foo;
 }
 
 void bar()
 {
      test();
      int i = fp();       // i is set to 10
 }
 ---
 
 Can I get "foo" from fp?
 
 Paul
 
 

Nope, that would require that fp not only contains a pointer
to the function but also a pointer to the name. That's not how
it works. But continuing that thought, you could add the
function's name as an additional variable and set that every
time you set fp.

-- 
Marco

"Paul D Anderson" <claude.reins msnmail.com> writes:

On Saturday, 11 April 2015 at 19:08:50 UTC, Marco Leise wrote:
 Am Sat, 11 Apr 2015 18:28:35 +0000
 schrieb "Paul D Anderson" <claude.reins msnmail.com>:

 Is there a way to return the name of a function (a string) 
 from a pointer to that function?
 
 Function pointer example from D Reference:
 ---
 int function() fp;
 
 void test()
 {
      static int a = 7;
      static int foo() { return a + 3; }
 
      fp = &foo;
 }
 
 void bar()
 {
      test();
      int i = fp();       // i is set to 10
 }
 ---
 
 Can I get "foo" from fp?
 
 Paul
 
 

 Nope, that would require that fp not only contains a pointer
 to the function but also a pointer to the name. That's not how
 it works. But continuing that thought, you could add the
 function's name as an additional variable and set that every
 time you set fp.

Okay, thanks, I can see that.

Paul

"bearophile" <bearophileHUGS lycos.com> writes:

Paul D Anderson:

 Is there a way to return the name of a function (a string) from 
 a pointer to that function?

Perhaps creating a string[void*] AA and initializing with all the 
function pointers you care about.

Bye,
bearophile