Re: [Cocci] How can i rename a specific structure field?

[Lars-Peter Clausen]

On 10/02/2014 10:12 PM, jmiguel hernandez wrote:
if i have this
typedef struct type1 {
   char8 a;
   char8 b;
   char8 c;
}

typedef struct _interface {
   type1 field1;
}interface;

and want to change to

typedef struct type1 {
   char8 d;
   char8 b;
   char8 c;
}

typedef struct _protocol {
   type1 *field1;
}interface;

interface *p

-p->field->a
+p->field->d

I have tried just changing field1 to field2. This gives parsing errors.

@@
typedef interface;
interface *p;
typedef type1;
type1 field1;
@@
<...
-p->field1
+p->fieldnew
...>

If you want to change the field from being embedded in the parent struct to 
a pointer and rename the field at the same time the way to go is

@@
typedef interface;
interface *p;
@@
p->field1
-.a
+->b

That replaces the ".a" with a "->b"

- Lars


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