Antwort: Re: Getting info from used typedef

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christ.li@xxxxxxxxx schrieb am 01.12.2009 00:41:18:

> The code does that is in declaration_specifiers() if you are curious.
> Sparse only use the base type of the user type, as if the declaration
> is "signed short var1". This make the later process much easier.
> It is none trivial change to preserve the type define name.
I see.

> May I ask more back ground information what do you want to do
> with the type define name? I am trying to find out if there is other 
easier
> way to achieve your goal.

Of course: I wrote a tool, which converts C-declarations into another 
format (IEC61131). 
These generated declarations are used as a interface to communicate to 
programs of different languages.
This IEC-format uses datatypes, which are not known in ANSI C, such as the 
following:

typedef signed long    DINT;
typedef unsigned long  UDINT;
typedef signed long    TIME;
typedef unsigned long  DATE_AND_TIME;
typedef unsigned short UINT;
typedef unsigned short WSTRING;


As you can see, the use of the basetype "unsigned long" for example is not 
clear.
If I now declare a variable of type TIME and another one of type DINT, 
I am not able to determine which type was used in the declaration.

I hope this is understandable,

regards,
Thomas
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