File indexing completed on 2024-06-16 04:23:17

 /*
     SPDX-FileCopyrightText: 2007 David Nolden <david.nolden.kdevelop@art-master.de>
     SPDX-FileCopyrightText: 2014 Sven Brauch <svenbrauch@gmail.com>
 
     SPDX-License-Identifier: LGPL-2.0-only
 */
 
 #include "typeutils.h"
 #include "referencetype.h"
 #include "pointertype.h"
 #include "typealiastype.h"
 #include "unsuretype.h"
 #include "integraltype.h"
 
 namespace TypeUtils {
 using namespace KDevelop;
 
 AbstractType::Ptr unAliasedType(const AbstractType::Ptr& _type)
 {
     auto type = _type;
     auto alias = type.dynamicCast<KDevelop::TypeAliasType>();
 
     int depth = 0; //Prevent endless recursion
     while (alias && depth < 20) {
         uint hadModifiers = alias->modifiers();
 
         type = alias->type();
 
         if (hadModifiers && type)
             type->setModifiers(type->modifiers() | hadModifiers);
 
         alias = type.dynamicCast<KDevelop::TypeAliasType>();
         ++depth;
     }
 
     return type;
 }
 
 ///@todo remove constant and topContext
 AbstractType::Ptr targetType(const AbstractType::Ptr& _base, const TopDUContext* /*topContext*/, bool* /*constant*/)
 {
     auto base = _base;
 
     auto ref = base.dynamicCast<ReferenceType>();
     auto pnt = base.dynamicCast<PointerType>();
     auto alias = base.dynamicCast<TypeAliasType>();
 
     while (ref || pnt || alias) {
         uint hadModifiers = base->modifiers();
 
         if (ref) {
             base = ref->baseType();
         } else if (pnt) {
             base = pnt->baseType();
         } else {
             base = alias->type();
         }
         if ((alias || ref) && hadModifiers && base)
             base->setModifiers(base->modifiers() | hadModifiers);
 
         ref = base.dynamicCast<ReferenceType>();
         pnt = base.dynamicCast<PointerType>();
         alias = base.dynamicCast<TypeAliasType>();
     }
 
     return base;
 }
 
 AbstractType::Ptr targetTypeKeepAliases(const AbstractType::Ptr& _base, const TopDUContext* /*topContext*/,
                                         bool* /*constant*/)
 {
     auto base = _base;
 
     auto ref = base.dynamicCast<ReferenceType>();
     auto pnt = base.dynamicCast<PointerType>();
 
     while (ref || pnt) {
         if (ref) {
             uint hadModifiers = ref->modifiers();
             base = ref->baseType();
             if (hadModifiers && base)
                 base->setModifiers(base->modifiers() | hadModifiers);
         } else if (pnt) {
             base = pnt->baseType();
         }
         ref = base.dynamicCast<ReferenceType>();
         pnt = base.dynamicCast<PointerType>();
     }
 
     return base;
 }
 
 AbstractType::Ptr resolveAliasType(const AbstractType::Ptr& eventualAlias)
 {
     if (eventualAlias && eventualAlias->whichType() == KDevelop::AbstractType::TypeAlias) {
         return eventualAlias.staticCast<TypeAliasType>()->type();
     }
     return eventualAlias;
 }
 
 bool isUsefulType(AbstractType::Ptr type)
 {
     type = resolveAliasType(type);
     if (!type) {
         return false;
     }
     if (type->whichType() != AbstractType::TypeIntegral) {
         return true;
     }
     auto dtype = type.staticCast<IntegralType>()->dataType();
     if (dtype != IntegralType::TypeMixed && dtype != IntegralType::TypeNull) {
         return true;
     }
     return false;
 }
 } // namespace TypeUtils