Fixed a case of default arguments which use nullptr.

Signed-off-by: Dimitar Dobrev <dpldobrev@protonmail.com>

src/CppParser/Parser.cpp

@@ -2785,7 +2785,9 @@ AST::Expression* Parser::WalkExpression(clang::Expr* Expr)
             {
                 auto SubTemporaryExpr = TemporaryExpr->GetTemporaryExpr();
                 auto Cast = dyn_cast<CastExpr>(SubTemporaryExpr);
-                if (!Cast || Cast->getSubExprAsWritten()->getStmtClass() != Stmt::IntegerLiteralClass)
+                if (!Cast ||
+                    (Cast->getSubExprAsWritten()->getStmtClass() != Stmt::IntegerLiteralClass &&
+                     Cast->getSubExprAsWritten()->getStmtClass() != Stmt::CXXNullPtrLiteralExprClass))
                     return WalkExpression(SubTemporaryExpr);
                 return new AST::CXXConstructExpr(GetStringFromStatement(Expr),
                     WalkDeclaration(ConstructorExpr->getConstructor()));

tests/CSharp/CSharp.Tests.cs

@@ -191,6 +191,7 @@ public class CSharpTests : GeneratorTestFixture
             methodsWithDefaultValues.DefaultEnumAssignedBitwiseOr();
             methodsWithDefaultValues.DefaultEnumAssignedBitwiseOrShort();
             methodsWithDefaultValues.DefaultNonEmptyCtor();
+            methodsWithDefaultValues.DefaultNonEmptyCtorWithNullPtr();
             methodsWithDefaultValues.DefaultMappedToEnum();
             methodsWithDefaultValues.DefaultMappedToZeroEnum();
             methodsWithDefaultValues.DefaultMappedToEnumAssignedWithCtor();

tests/CSharp/CSharp.cpp

@@ -447,6 +447,10 @@ void MethodsWithDefaultValues::defaultNonEmptyCtor(QGenericArgument arg)
 {
 }
 
+void MethodsWithDefaultValues::defaultNonEmptyCtorWithNullPtr(QGenericArgument arg)
+{
+}
+
 void MethodsWithDefaultValues::defaultMappedToEnum(QFlags<Flags> qFlags)
 {
 }

tests/CSharp/CSharp.h

@@ -356,6 +356,7 @@ public:
     void defaultEnumAssignedBitwiseOr(Flags flags = Flags::Flag1 | Flags::Flag2);
     void defaultEnumAssignedBitwiseOrShort(UntypedFlags flags = Flag1 | Flag2);
     void defaultNonEmptyCtor(QGenericArgument arg = QGenericArgument(0));
+    void defaultNonEmptyCtorWithNullPtr(QGenericArgument arg = QGenericArgument(nullptr));
     void defaultMappedToEnum(QFlags<Flags> qFlags = Flags::Flag1);
     void defaultMappedToZeroEnum(QFlags<Flags> qFlags = 0);
     void defaultMappedToEnumAssignedWithCtor(QFlags<Flags> qFlags = QFlags<Flags>());