[lldb] Implement GetFormat in terms of GetTypeInfo

(cherry picked from commit a5c2622)

Author: augusto2112

lldb/source/Plugins/TypeSystem/Swift/SwiftASTContext.cpp

@@ -6338,96 +6338,6 @@ lldb::Encoding SwiftASTContext::GetEncoding(opaque_compiler_type_t type,
   return lldb::eEncodingInvalid;
 }
 
-lldb::Format SwiftASTContext::GetFormat(opaque_compiler_type_t type) {
-  VALID_OR_RETURN_CHECK_TYPE(type, lldb::eFormatInvalid);
-
-  swift::CanType swift_can_type(GetCanonicalSwiftType(type));
-
-  const swift::TypeKind type_kind = swift_can_type->getKind();
-  switch (type_kind) {
-  case swift::TypeKind::BuiltinDefaultActorStorage:
-  case swift::TypeKind::BuiltinExecutor:
-  case swift::TypeKind::BuiltinJob:
-  case swift::TypeKind::BuiltinRawUnsafeContinuation:
-  case swift::TypeKind::Error:
-  case swift::TypeKind::Module:
-  case swift::TypeKind::InOut:
-  case swift::TypeKind::VariadicSequence:
-  case swift::TypeKind::Placeholder:
-  case swift::TypeKind::SILBlockStorage:
-  case swift::TypeKind::SILBox:
-  case swift::TypeKind::SILFunction:
-  case swift::TypeKind::SILToken:
-  case swift::TypeKind::TypeVariable:
-  case swift::TypeKind::Unresolved:
-    break;
-  case swift::TypeKind::BuiltinIntegerLiteral:
-  case swift::TypeKind::BuiltinInteger:
-    return eFormatDecimal; // TODO: detect if an integer is unsigned
-  case swift::TypeKind::BuiltinFloat:
-    return eFormatFloat; // TODO: detect if an integer is unsigned
-
-  case swift::TypeKind::BuiltinRawPointer:
-  case swift::TypeKind::BuiltinNativeObject:
-  case swift::TypeKind::BuiltinUnsafeValueBuffer:
-  case swift::TypeKind::BuiltinBridgeObject:
-  case swift::TypeKind::PrimaryArchetype:
-  case swift::TypeKind::OpenedArchetype:
-  case swift::TypeKind::OpaqueTypeArchetype:
-  case swift::TypeKind::NestedArchetype:
-  case swift::TypeKind::GenericTypeParam:
-  case swift::TypeKind::DependentMember:
-    return eFormatAddressInfo;
-
-  // Classes are always pointers in swift.
-  case swift::TypeKind::Class:
-  case swift::TypeKind::BoundGenericClass:
-    return eFormatHex;
-
-  case swift::TypeKind::BuiltinVector:
-    break;
-  case swift::TypeKind::Tuple:
-    break;
-  case swift::TypeKind::UnmanagedStorage:
-  case swift::TypeKind::UnownedStorage:
-  case swift::TypeKind::WeakStorage:
-    return ToCompilerType(swift_can_type->getReferenceStorageReferent())
-        .GetFormat();
-    break;
-
-  case swift::TypeKind::Enum:
-  case swift::TypeKind::BoundGenericEnum:
-    return eFormatUnsigned;
-
-  case swift::TypeKind::GenericFunction:
-  case swift::TypeKind::Function:
-    return lldb::eFormatAddressInfo;
-
-  case swift::TypeKind::Struct:
-  case swift::TypeKind::Protocol:
-  case swift::TypeKind::Metatype:
-  case swift::TypeKind::ProtocolComposition:
-    break;
-  case swift::TypeKind::LValue:
-    return lldb::eFormatHex;
-  case swift::TypeKind::UnboundGeneric:
-  case swift::TypeKind::BoundGenericStruct:
-  case swift::TypeKind::ExistentialMetatype:
-  case swift::TypeKind::DynamicSelf:
-    break;
-
-  case swift::TypeKind::Optional:
-  case swift::TypeKind::TypeAlias:
-  case swift::TypeKind::Paren:
-  case swift::TypeKind::Dictionary:
-  case swift::TypeKind::ArraySlice:
-    assert(false && "Not a canonical type");
-    break;
-  }
-  // We don't know hot to display this type.
-  return lldb::eFormatBytes;
-}
-
 uint32_t SwiftASTContext::GetNumChildren(opaque_compiler_type_t type,
                                          bool omit_empty_base_classes,
                                          const ExecutionContext *exe_ctx) {

lldb/source/Plugins/TypeSystem/Swift/SwiftASTContext.h

@@ -614,8 +614,6 @@ class SwiftASTContext : public TypeSystemSwift {
   lldb::Encoding GetEncoding(lldb::opaque_compiler_type_t type,
                              uint64_t &count) override;
 
-  lldb::Format GetFormat(lldb::opaque_compiler_type_t type) override;
-
   uint32_t GetNumChildren(lldb::opaque_compiler_type_t type,
                           bool omit_empty_base_classes,
                           const ExecutionContext *exe_ctx) override;

lldb/source/Plugins/TypeSystem/Swift/TypeSystemSwift.cpp

@@ -120,3 +120,27 @@ uint32_t TypeSystemSwift::GetIndexOfChildWithName(
       type, name, exe_ctx, omit_empty_base_classes, child_indexes);
   return num_child_indexes == 1 ? child_indexes.front() : UINT32_MAX;
 }
+
+lldb::Format TypeSystemSwift::GetFormat(opaque_compiler_type_t type) {
+  auto swift_flags = GetTypeInfo(type, nullptr);
+
+  if (swift_flags & eTypeIsInteger)
+    return eFormatDecimal;
+
+  if (swift_flags & eTypeIsFloat)
+    return eFormatFloat;
+
+  if (swift_flags & eTypeIsPointer || swift_flags & eTypeIsClass)
+    return eFormatAddressInfo;
+
+  if (swift_flags & eTypeIsClass)
+    return eFormatHex;
+
+  if (swift_flags & eTypeIsGeneric)
+    return eFormatUnsigned;
+
+  if (swift_flags & eTypeIsFuncPrototype || swift_flags & eTypeIsBlock)
+    return eFormatAddressInfo;
+
+  return eFormatBytes;
+}

lldb/source/Plugins/TypeSystem/Swift/TypeSystemSwift.h

@@ -169,6 +169,8 @@ class TypeSystemSwift : public TypeSystem {
 
   /// \see lldb_private::TypeSystem::Dump
   void Dump(llvm::raw_ostream &output) override;
+  
+  lldb::Format GetFormat(lldb::opaque_compiler_type_t type) override;
 
   /// Unavailable hardcoded functions that don't make sense for Swift.
   /// \{

lldb/source/Plugins/TypeSystem/Swift/TypeSystemSwiftTypeRef.cpp

@@ -2509,13 +2509,6 @@ lldb::Encoding TypeSystemSwiftTypeRef::GetEncoding(opaque_compiler_type_t type,
                       (ReconstructType(type), count));
 }
 
-lldb::Format TypeSystemSwiftTypeRef::GetFormat(opaque_compiler_type_t type) {
-  LLDB_SCOPED_TIMER();
-  if (auto *swift_ast_context = GetSwiftASTContext())
-    return swift_ast_context->GetFormat(ReconstructType(type));
-  return {};
-}
-
 uint32_t
 TypeSystemSwiftTypeRef::GetNumChildren(opaque_compiler_type_t type,
                                        bool omit_empty_base_classes,

lldb/source/Plugins/TypeSystem/Swift/TypeSystemSwiftTypeRef.h

@@ -163,7 +163,6 @@ class TypeSystemSwiftTypeRef : public TypeSystemSwift {
                 ExecutionContextScope *exe_scope) override;
   lldb::Encoding GetEncoding(lldb::opaque_compiler_type_t type,
                              uint64_t &count) override;
-  lldb::Format GetFormat(lldb::opaque_compiler_type_t type) override;
   uint32_t GetNumChildren(lldb::opaque_compiler_type_t type,
                           bool omit_empty_base_classes,
                           const ExecutionContext *exe_ctx) override;