[cfe-dev] (no subject)

[Peeter Joot]

I'd like to record all typedef references, but weed out the old style C tag
typedefs like these:

typedef struct foo
{
   unsigned char m;
   unsigned char n;
} foo;

I'd done that with the following ugly code using string compares:

   // Find typedefs:
   bool VisitTypedefDecl( TypedefDecl * t )
   {
      const QualType & q = t->getUnderlyingType() ;

      const Type * tt = q.getTypePtr() ;
      string theUnderlyingType = q.getAsString( ) ;
      string typeDefinitionName = t->getName().str() ;
      string * pName = NULL ;

      if ( tt->isStructureType() && (("struct " + typeDefinitionName) ==
theUnderlyingType ) )
      {
         pName = &typeDefinitionName ;
      }
      else if ( tt->isClassType() && (("class " + typeDefinitionName) ==
theUnderlyingType ) )
      {
         pName = &typeDefinitionName ;
      }
      else if ( tt->isUnionType() && (("union " + typeDefinitionName) ==
theUnderlyingType ) )
      {
         pName = &typeDefinitionName ;
      }
      else
      {
         insertIntoMap( typeDefinitionName, q, pName ) ;
      }

      return true ;
   }

This does two things:
1) effectively strips off the 'struct', 'union', 'class' from
theUnderlyingType.
2) uses ugly string comparisions to see if we have 'typedef
{struct|class|union} NNN NNN'.

Are there cleaner ways to do each of the above tasks?

-- 
Peeter
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