Implement parsing and AST processing of C++ deprecated attributes.

Author: tritao

src/AST/Declaration.cs

@@ -294,6 +294,9 @@ private static string GetDeclName(Declaration decl, string name)
         // True if the declaration is dependent.
         public bool IsDependent;
 
+        // True if the declaration is deprecated.
+        public bool IsDeprecated;
+
         // Keeps a reference to the complete version of this declaration.
         public Declaration CompleteDeclaration;
 

src/CppParser/AST.cpp

@@ -250,6 +250,7 @@ Declaration::Declaration(DeclarationKind kind)
     , isDependent(false)
     , isImplicit(false)
     , isInvalid(false)
+    , isDeprecated(false)
     , completeDeclaration(0)
     , definitionOrder(0)
     , originalPtr(0)
@@ -271,6 +272,7 @@ Declaration::Declaration(const Declaration& rhs)
     , isDependent(rhs.isDependent)
     , isImplicit(rhs.isImplicit)
     , isInvalid(rhs.isInvalid)
+    , isDeprecated(false)
     , completeDeclaration(rhs.completeDeclaration)
     , definitionOrder(rhs.definitionOrder)
     , PreprocessedEntities(rhs.PreprocessedEntities)

src/CppParser/Decl.h

@@ -84,6 +84,7 @@ class CS_API Declaration
     bool isDependent;
     bool isImplicit;
     bool isInvalid;
+    bool isDeprecated;
     Declaration* completeDeclaration;
     unsigned definitionOrder;
     VECTOR(PreprocessedEntity*, PreprocessedEntities)

src/CppParser/Parser.cpp

@@ -4080,10 +4080,20 @@ Declaration* Parser::WalkDeclaration(const clang::Decl* D)
         for (auto it = D->attr_begin(); it != D->attr_end(); ++it)
         {
             Attr* Attr = (*it);
-            if (Attr->getKind() == clang::attr::Kind::MaxFieldAlignment)
+            switch(Attr->getKind())
             {
-                auto MFA = cast<clang::MaxFieldAlignmentAttr>(Attr);
-                Decl->maxFieldAlignment = MFA->getAlignment() / 8; // bits to bytes.
+                case clang::attr::Kind::MaxFieldAlignment:
+                {
+                    auto MFA = cast<clang::MaxFieldAlignmentAttr>(Attr);
+                    Decl->maxFieldAlignment = MFA->getAlignment() / 8; // bits to bytes.
+                    break;
+                }
+                case clang::attr::Kind::Deprecated:
+                {
+                    auto DA = cast<clang::DeprecatedAttr>(Attr);
+                    Decl->isDeprecated = true;
+                    break;
+                }
             }
         }
     }

src/Generator.Tests/AST/TestAST.cs

@@ -308,6 +308,18 @@ public void TestASTClassTemplates()
             Assert.AreSame(classTemplateSpecialization.TemplatedDecl.TemplatedClass, template.TemplatedClass);
         }
 
+        [Test]
+        public void TestDeprecatedAttrs()
+        {
+            var deprecated_func = AstContext.FindFunction("deprecated_func");
+            Assert.IsNotNull(deprecated_func);
+            Assert.IsTrue(deprecated_func.First().IsDeprecated);
+
+            var non_deprecated_func = AstContext.FindFunction("non_deprecated_func");
+            Assert.IsNotNull(non_deprecated_func);
+            Assert.IsFalse(non_deprecated_func.First().IsDeprecated);
+        }
+
         [Test]
         public void TestFindClassInNamespace()
         {

src/Parser/ASTConverter.cs

@@ -985,6 +985,7 @@ void VisitDeclaration(Declaration decl, AST.Declaration _decl)
             _decl.IsInvalid = decl.IsInvalid;
             _decl.DefinitionOrder = decl.DefinitionOrder;
             _decl.MaxFieldAlignment = decl.MaxFieldAlignment;
+            _decl.IsDeprecated = decl.IsDeprecated;
 
             if (decl.CompleteDeclaration != null)
                 _decl.CompleteDeclaration = Visit(decl.CompleteDeclaration);

tests/Native/AST.h

@@ -245,3 +245,6 @@ class HasPrivateCCtorCopyAssignment
     HasPrivateCCtorCopyAssignment(const HasPrivateCCtorCopyAssignment&) = delete;
     HasPrivateCCtorCopyAssignment& operator=(const HasPrivateCCtorCopyAssignment&) = delete;
 };
+
+__attribute__((deprecated)) int deprecated_func(int num);
+int non_deprecated_func(int num);