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//===--- FillInMissingProtocolStubs.cpp - --------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Implements the "Add methods from protocol(s)" refactoring operation.
//
//===----------------------------------------------------------------------===//
#include "RefactoringOperations.h"
#include "clang/AST/AST.h"
#include "clang/Edit/RefactoringFixits.h"
using namespace clang;
using namespace clang::tooling;
using namespace edit::fillInMissingProtocolStubs;
namespace {
class FillInMissingProtocolStubsOperation : public RefactoringOperation {
public:
FillInMissingProtocolStubsOperation(const ObjCContainerDecl *Container,
FillInMissingProtocolStubs Impl)
: Container(Container), Impl(std::move(Impl)) {}
const Decl *getTransformedDecl() const override { return Container; }
llvm::Expected<RefactoringResult> perform(ASTContext &Context, const Preprocessor &ThePreprocessor,
const RefactoringOptionSet &Options,
unsigned SelectedCandidateIndex) override;
const ObjCContainerDecl *Container;
FillInMissingProtocolStubs Impl;
};
} // end anonymous namespace
RefactoringOperationResult
clang::tooling::initiateFillInMissingProtocolStubsOperation(
ASTSlice &Slice, ASTContext &Context, SourceLocation Location,
SourceRange SelectionRange, bool CreateOperation) {
auto SelectedDecl = Slice.innermostSelectedDecl(
{Decl::ObjCImplementation, Decl::ObjCCategoryImpl, Decl::ObjCInterface,
Decl::ObjCCategory},
ASTSlice::InnermostDeclOnly);
if (!SelectedDecl)
return std::nullopt;
const auto *Container = cast<ObjCContainerDecl>(SelectedDecl->getDecl());
// If this in a class extension, initiate the operation on the @implementation
// if it's in the same TU.
if (const auto *Category = dyn_cast<ObjCCategoryDecl>(Container)) {
if (Category->IsClassExtension()) {
const ObjCInterfaceDecl *I = Category->getClassInterface();
if (I && I->getImplementation())
Container = I->getImplementation();
else
return RefactoringOperationResult(
"Class extension without suitable @implementation");
}
}
FillInMissingProtocolStubs Impl;
if (Impl.initiate(Context, Container))
return std::nullopt;
if (!Impl.hasMissingRequiredMethodStubs())
return RefactoringOperationResult("All of the @required methods are there");
RefactoringOperationResult Result;
Result.Initiated = true;
if (!CreateOperation)
return Result;
auto Operation = std::make_unique<FillInMissingProtocolStubsOperation>(
Container, std::move(Impl));
Result.RefactoringOp = std::move(Operation);
return Result;
}
llvm::Expected<RefactoringResult>
FillInMissingProtocolStubsOperation::perform(
ASTContext &Context, const Preprocessor &ThePreprocessor,
const RefactoringOptionSet &Options, unsigned SelectedCandidateIndex) {
std::vector<RefactoringReplacement> Replacements;
Impl.perform(Context,
[&](const FixItHint &Hint) { Replacements.push_back(Hint); });
return std::move(Replacements);
}
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