Merge pull request #682 from rolfbjarne/nameddecl-qualifiedname

Expose NamedDecl->getQualifiedNameAsString() to ClangSharp.

Author: tannergooding

sources/ClangSharp.Interop/Extensions/CXCursor.cs

@@ -1358,6 +1358,8 @@ public readonly ReadOnlySpan<CXCursor> OverriddenCursors
 
     public readonly CXPrintingPolicy PrintingPolicy => (kind != default) ? (CXPrintingPolicy)clang.getCursorPrintingPolicy(this) : default;
 
+    public readonly CXString QualifiedName => clangsharp.Cursor_getQualifiedName(this);
+
     public readonly CXString RawCommentText => clang.Cursor_getRawCommentText(this);
 
     public readonly CXType ReceiverType => !IsExpression ? default : clang.Cursor_getReceiverType(this);

sources/ClangSharp.Interop/clangsharp/clangsharp.cs

@@ -812,6 +812,9 @@ public static unsafe partial class @clangsharp
     [DllImport("libClangSharp", CallingConvention = CallingConvention.Cdecl, EntryPoint = "clangsharp_Cursor_getProtocol", ExactSpelling = true)]
     public static extern CXCursor Cursor_getProtocol(CXCursor C, [NativeTypeName("unsigned int")] uint i);
 
+    [DllImport("libClangSharp", CallingConvention = CallingConvention.Cdecl, EntryPoint = "clangsharp_Cursor_getQualifiedName", ExactSpelling = true)]
+    public static extern CXString Cursor_getQualifiedName(CXCursor C);
+
     [DllImport("libClangSharp", CallingConvention = CallingConvention.Cdecl, EntryPoint = "clangsharp_Cursor_getRedeclContext", ExactSpelling = true)]
     public static extern CXCursor Cursor_getRedeclContext(CXCursor C);
 

sources/ClangSharp/Cursors/Decls/NamedDecl.cs

@@ -26,6 +26,8 @@ private protected NamedDecl(CXCursor handle, CXCursorKind expectedCursorKind, CX
 
     public string Name => Spelling;
 
+    public string QualifiedName => Handle.QualifiedName.ToString();
+
     public NamedDecl UnderlyingDecl => _underlyingDecl.Value;
 
     public CXVisibilityKind Visibility => Handle.Visibility;

sources/libClangSharp/ClangSharp.cpp

@@ -3975,6 +3975,18 @@ CXCursor clangsharp_Cursor_getProtocol(CXCursor C, unsigned i) {
     return clang_getNullCursor();
 }
 
+CXString clangsharp_Cursor_getQualifiedName(CXCursor C) {
+    if (isDeclOrTU(C.kind)) {
+        const Decl* D = getCursorDecl(C);
+
+        if (const NamedDecl* ND = dyn_cast<NamedDecl>(D)) {
+            return createDup(ND->getQualifiedNameAsString());
+        }
+    }
+
+    return createEmpty();
+}
+
 CXCursor clangsharp_Cursor_getRedeclContext(CXCursor C) {
     if (isDeclOrTU(C.kind)) {
         const Decl* D = getCursorDecl(C);

sources/libClangSharp/ClangSharp.h

@@ -695,6 +695,8 @@ CLANGSHARP_LINKAGE unsigned clangsharp_Cursor_getPropertyAttributes(CXCursor C);
 
 CLANGSHARP_LINKAGE CXCursor clangsharp_Cursor_getProtocol(CXCursor C, unsigned i);
 
+CLANGSHARP_LINKAGE CXString clangsharp_Cursor_getQualifiedName(CXCursor C);
+
 CLANGSHARP_LINKAGE CXCursor clangsharp_Cursor_getRedeclContext(CXCursor C);
 
 CLANGSHARP_LINKAGE CXCursor clangsharp_Cursor_getReferenced(CXCursor C);

tests/ClangSharp.UnitTests/CursorTests/DeclTest.cs

@@ -126,6 +126,39 @@ struct B {
         Assert.That(structB.IsPOD, Is.False, "struct B should be not POD");
     }
 
+
+    [Test]
+    public void QualifiedNameTest()
+    {
+        AssertNeedNewClangSharp();
+
+        var inputContents = """
+class C {
+    void M();
+    int F;
+};
+
+struct S {
+    void M();
+    int F;
+};
+""";
+
+        using var translationUnit = CreateTranslationUnit(inputContents);
+
+        var records = translationUnit.TranslationUnitDecl.Decls.OfType<CXXRecordDecl>().ToArray();
+        var classDecl = records.Single(v => v.Name == "C");
+        var structDecl = records.Single(v => v.Name == "S");
+        var classM = classDecl.Decls.OfType<FunctionDecl>().Single();
+        var structM = structDecl.Decls.OfType<FunctionDecl>().Single();
+
+        Assert.That(classDecl.QualifiedName, Is.EqualTo("C"), "Class");
+        Assert.That(classM.QualifiedName, Is.EqualTo("C::M"), "Class Method");
+
+        Assert.That(structDecl.QualifiedName, Is.EqualTo("S"), "Struct");
+        Assert.That(structM.QualifiedName, Is.EqualTo("S::M"), "Struct Method");
+    }
+
     [Test]
     public void UnsignedValue()
     {