in-class function definitions?

in-class function definitions?

[rick shelton]

How does the compiler handle an in-class function definition?
Example:

// File A.h

class A {
 int foo(void) { return x; }
 int bar(void);
 int x;

}

// File A.cc
#include "A.h"
int A::bar(void) { ... }

How is "foo()" represented in the AST when parsing A.cc?


Thanks,
rick

Re: in-class function definitions?

[Dodji Seketeli]

Hello Rick,

Since nobody responded, I'll try.  :-)

rick shelton <thatrickguy@yahoo.com> a écrit:

> How does the compiler handle an in-class function definition?
> Example:
>
> // File A.h
>
> class A {
>  int foo(void) { return x; }
>  int bar(void);
>  int x;
>
> }
>
> // File A.cc
> #include "A.h"
> int A::bar(void) { ... }
>
> How is "foo()" represented in the AST when parsing A.cc?

Let's say the type "A" is represented by type_a.  Foo is then
represented by a FUNCTION_DECL tree node that is accessible from the
list of methods of type_a, that you can get from TYPE_METHODS (type_a).

You can walk these methods by doing:

    {
      /*  method is going to be a tree node
          of FUNCTION_DECL kind.  */
      tree method;
      for (method = TYPE_METHOD (type_a);
           method;
           method = DECL_CHAIN (method))
        /* Do something with method*/;
    }

Then the body of the function can be accessed from the 
DECL_INITIAL (method) accessor.

I hope this helps.

-- 
		Dodji