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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2023 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
#include "Utils.h"
#include "swift/AST/NameLookup.h"
using namespace swift;
using namespace swift::refactoring;
llvm::StringRef
swift::refactoring::correctNameInternal(ASTContext &Ctx, StringRef Name,
ArrayRef<ValueDecl *> AllVisibles) {
// If we find the collision.
bool FoundCollision = false;
// The suffixes we cannot use by appending to the original given name.
llvm::StringSet<> UsedSuffixes;
for (auto VD : AllVisibles) {
StringRef S = VD->getBaseName().userFacingName();
if (!S.starts_with(Name))
continue;
StringRef Suffix = S.substr(Name.size());
if (Suffix.empty())
FoundCollision = true;
else
UsedSuffixes.insert(Suffix);
}
if (!FoundCollision)
return Name;
// Find the first suffix we can use.
std::string SuffixToUse;
for (unsigned I = 1;; I++) {
SuffixToUse = std::to_string(I);
if (UsedSuffixes.count(SuffixToUse) == 0)
break;
}
return Ctx.getIdentifier((llvm::Twine(Name) + SuffixToUse).str()).str();
}
llvm::StringRef swift::refactoring::correctNewDeclName(SourceLoc Loc,
DeclContext *DC,
StringRef Name) {
// Collect all visible decls in the decl context.
llvm::SmallVector<ValueDecl *, 16> AllVisibles;
VectorDeclConsumer Consumer(AllVisibles);
ASTContext &Ctx = DC->getASTContext();
lookupVisibleDecls(Consumer, Loc, DC, /*IncludeTopLevel*/ true);
return correctNameInternal(Ctx, Name, AllVisibles);
}
/// If \p NTD is a protocol, return all the protocols it inherits from. If it's
/// a type, return all the protocols it conforms to.
SmallVector<ProtocolDecl *, 2>
swift::refactoring::getAllProtocols(NominalTypeDecl *NTD) {
if (auto Proto = dyn_cast<ProtocolDecl>(NTD)) {
return SmallVector<ProtocolDecl *, 2>(
Proto->getInheritedProtocols().begin(),
Proto->getInheritedProtocols().end());
} else {
return NTD->getAllProtocols();
}
}
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