source: translator/ResolvExpr/ResolveTypeof.cc @ b87a5ed

#include "ResolveTypeof.h"
#include "Alternative.h"
#include "AlternativeFinder.h"
#include "Resolver.h"
#include "TypeEnvironment.h"
#include "SynTree/Expression.h"
#include "SynTree/Type.h"

namespace ResolvExpr {
    namespace {
#if 0
        void
        printAlts( const AltList &list, std::ostream &os, int indent = 0 )
        {
            for( AltList::const_iterator i = list.begin(); i != list.end(); ++i ) {
                i->print( os, indent );
                os << std::endl;
            }
        }
#endif
    }

    class ResolveTypeof : public Mutator {
      public:
        ResolveTypeof( const SymTab::Indexer &indexer ) : indexer( indexer ) {}
        Type *mutate( TypeofType *typeofType );

      private:
        const SymTab::Indexer &indexer;
    };

    Type *resolveTypeof( Type *type, const SymTab::Indexer &indexer ) {
        ResolveTypeof mutator( indexer );
        return type->acceptMutator( mutator );
    }

    Type *ResolveTypeof::mutate( TypeofType *typeofType ) {
#if 0
        std::cout << "resolving typeof: ";
        typeofType->print( std::cout );
        std::cout << std::endl;
#endif
        if ( typeofType->get_expr() ) {
            Expression *newExpr = resolveInVoidContext( typeofType->get_expr(), indexer );
            assert( newExpr->get_results().size() > 0 );
            Type *newType;
            if ( newExpr->get_results().size() > 1 ) {
                TupleType *tupleType = new TupleType( Type::Qualifiers() );
                cloneAll( newExpr->get_results(), tupleType->get_types() );
                newType = tupleType;
            } else {
                newType = newExpr->get_results().front()->clone();
            }
            delete typeofType;
            return newType;
        }
        return typeofType;
    }

} // namespace ResolvExpr