| //===--- CodeComplete.cpp ---------------------------------------*- C++-*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===---------------------------------------------------------------------===// |
| // |
| // AST-based completions are provided using the completion hooks in Sema. |
| // |
| // Signature help works in a similar way as code completion, but it is simpler |
| // as there are typically fewer candidates. |
| // |
| //===---------------------------------------------------------------------===// |
| |
| #include "CodeComplete.h" |
| #include "CodeCompletionStrings.h" |
| #include "Compiler.h" |
| #include "Logger.h" |
| #include "index/Index.h" |
| #include "clang/Frontend/CompilerInstance.h" |
| #include "clang/Frontend/FrontendActions.h" |
| #include "clang/Sema/CodeCompleteConsumer.h" |
| #include "clang/Sema/Sema.h" |
| #include <queue> |
| |
| namespace clang { |
| namespace clangd { |
| namespace { |
| |
| CompletionItemKind toCompletionItemKind(CXCursorKind CursorKind) { |
| switch (CursorKind) { |
| case CXCursor_MacroInstantiation: |
| case CXCursor_MacroDefinition: |
| return CompletionItemKind::Text; |
| case CXCursor_CXXMethod: |
| case CXCursor_Destructor: |
| return CompletionItemKind::Method; |
| case CXCursor_FunctionDecl: |
| case CXCursor_FunctionTemplate: |
| return CompletionItemKind::Function; |
| case CXCursor_Constructor: |
| return CompletionItemKind::Constructor; |
| case CXCursor_FieldDecl: |
| return CompletionItemKind::Field; |
| case CXCursor_VarDecl: |
| case CXCursor_ParmDecl: |
| return CompletionItemKind::Variable; |
| // FIXME(ioeric): use LSP struct instead of class when it is suppoted in the |
| // protocol. |
| case CXCursor_StructDecl: |
| case CXCursor_ClassDecl: |
| case CXCursor_UnionDecl: |
| case CXCursor_ClassTemplate: |
| case CXCursor_ClassTemplatePartialSpecialization: |
| return CompletionItemKind::Class; |
| case CXCursor_Namespace: |
| case CXCursor_NamespaceAlias: |
| case CXCursor_NamespaceRef: |
| return CompletionItemKind::Module; |
| case CXCursor_EnumConstantDecl: |
| return CompletionItemKind::Value; |
| case CXCursor_EnumDecl: |
| return CompletionItemKind::Enum; |
| // FIXME(ioeric): figure out whether reference is the right type for aliases. |
| case CXCursor_TypeAliasDecl: |
| case CXCursor_TypeAliasTemplateDecl: |
| case CXCursor_TypedefDecl: |
| case CXCursor_MemberRef: |
| case CXCursor_TypeRef: |
| return CompletionItemKind::Reference; |
| default: |
| return CompletionItemKind::Missing; |
| } |
| } |
| |
| CompletionItemKind |
| toCompletionItemKind(CodeCompletionResult::ResultKind ResKind, |
| CXCursorKind CursorKind) { |
| switch (ResKind) { |
| case CodeCompletionResult::RK_Declaration: |
| return toCompletionItemKind(CursorKind); |
| case CodeCompletionResult::RK_Keyword: |
| return CompletionItemKind::Keyword; |
| case CodeCompletionResult::RK_Macro: |
| return CompletionItemKind::Text; // unfortunately, there's no 'Macro' |
| // completion items in LSP. |
| case CodeCompletionResult::RK_Pattern: |
| return CompletionItemKind::Snippet; |
| } |
| llvm_unreachable("Unhandled CodeCompletionResult::ResultKind."); |
| } |
| |
| CompletionItemKind toCompletionItemKind(index::SymbolKind Kind) { |
| using SK = index::SymbolKind; |
| switch (Kind) { |
| case SK::Unknown: |
| return CompletionItemKind::Missing; |
| case SK::Module: |
| case SK::Namespace: |
| case SK::NamespaceAlias: |
| return CompletionItemKind::Module; |
| case SK::Macro: |
| return CompletionItemKind::Text; |
| case SK::Enum: |
| return CompletionItemKind::Enum; |
| // FIXME(ioeric): use LSP struct instead of class when it is suppoted in the |
| // protocol. |
| case SK::Struct: |
| case SK::Class: |
| case SK::Protocol: |
| case SK::Extension: |
| case SK::Union: |
| return CompletionItemKind::Class; |
| // FIXME(ioeric): figure out whether reference is the right type for aliases. |
| case SK::TypeAlias: |
| case SK::Using: |
| return CompletionItemKind::Reference; |
| case SK::Function: |
| // FIXME(ioeric): this should probably be an operator. This should be fixed |
| // when `Operator` is support type in the protocol. |
| case SK::ConversionFunction: |
| return CompletionItemKind::Function; |
| case SK::Variable: |
| case SK::Parameter: |
| return CompletionItemKind::Variable; |
| case SK::Field: |
| return CompletionItemKind::Field; |
| // FIXME(ioeric): use LSP enum constant when it is supported in the protocol. |
| case SK::EnumConstant: |
| return CompletionItemKind::Value; |
| case SK::InstanceMethod: |
| case SK::ClassMethod: |
| case SK::StaticMethod: |
| case SK::Destructor: |
| return CompletionItemKind::Method; |
| case SK::InstanceProperty: |
| case SK::ClassProperty: |
| case SK::StaticProperty: |
| return CompletionItemKind::Property; |
| case SK::Constructor: |
| return CompletionItemKind::Constructor; |
| } |
| llvm_unreachable("Unhandled clang::index::SymbolKind."); |
| } |
| |
| /// Get the optional chunk as a string. This function is possibly recursive. |
| /// |
| /// The parameter info for each parameter is appended to the Parameters. |
| std::string |
| getOptionalParameters(const CodeCompletionString &CCS, |
| std::vector<ParameterInformation> &Parameters) { |
| std::string Result; |
| for (const auto &Chunk : CCS) { |
| switch (Chunk.Kind) { |
| case CodeCompletionString::CK_Optional: |
| assert(Chunk.Optional && |
| "Expected the optional code completion string to be non-null."); |
| Result += getOptionalParameters(*Chunk.Optional, Parameters); |
| break; |
| case CodeCompletionString::CK_VerticalSpace: |
| break; |
| case CodeCompletionString::CK_Placeholder: |
| // A string that acts as a placeholder for, e.g., a function call |
| // argument. |
| // Intentional fallthrough here. |
| case CodeCompletionString::CK_CurrentParameter: { |
| // A piece of text that describes the parameter that corresponds to |
| // the code-completion location within a function call, message send, |
| // macro invocation, etc. |
| Result += Chunk.Text; |
| ParameterInformation Info; |
| Info.label = Chunk.Text; |
| Parameters.push_back(std::move(Info)); |
| break; |
| } |
| default: |
| Result += Chunk.Text; |
| break; |
| } |
| } |
| return Result; |
| } |
| |
| /// A scored code completion result. |
| /// It may be promoted to a CompletionItem if it's among the top-ranked results. |
| struct CompletionCandidate { |
| CompletionCandidate(CodeCompletionResult &Result) |
| : Result(&Result), Score(score(Result)) {} |
| |
| CodeCompletionResult *Result; |
| float Score; // 0 to 1, higher is better. |
| |
| // Comparison reflects rank: better candidates are smaller. |
| bool operator<(const CompletionCandidate &C) const { |
| if (Score != C.Score) |
| return Score > C.Score; |
| return *Result < *C.Result; |
| } |
| |
| // Returns a string that sorts in the same order as operator<, for LSP. |
| // Conceptually, this is [-Score, Name]. We convert -Score to an integer, and |
| // hex-encode it for readability. Example: [0.5, "foo"] -> "41000000foo" |
| std::string sortText() const { |
| std::string S, NameStorage; |
| llvm::raw_string_ostream OS(S); |
| write_hex(OS, encodeFloat(-Score), llvm::HexPrintStyle::Lower, |
| /*Width=*/2 * sizeof(Score)); |
| OS << Result->getOrderedName(NameStorage); |
| return OS.str(); |
| } |
| |
| private: |
| static float score(const CodeCompletionResult &Result) { |
| // Priority 80 is a really bad score. |
| float Score = 1 - std::min<float>(80, Result.Priority) / 80; |
| |
| switch (static_cast<CXAvailabilityKind>(Result.Availability)) { |
| case CXAvailability_Available: |
| // No penalty. |
| break; |
| case CXAvailability_Deprecated: |
| Score *= 0.1f; |
| break; |
| case CXAvailability_NotAccessible: |
| case CXAvailability_NotAvailable: |
| Score = 0; |
| break; |
| } |
| return Score; |
| } |
| |
| // Produces an integer that sorts in the same order as F. |
| // That is: a < b <==> encodeFloat(a) < encodeFloat(b). |
| static uint32_t encodeFloat(float F) { |
| static_assert(std::numeric_limits<float>::is_iec559, ""); |
| static_assert(sizeof(float) == sizeof(uint32_t), ""); |
| constexpr uint32_t TopBit = ~(~uint32_t{0} >> 1); |
| |
| // Get the bits of the float. Endianness is the same as for integers. |
| uint32_t U; |
| memcpy(&U, &F, sizeof(float)); |
| // IEEE 754 floats compare like sign-magnitude integers. |
| if (U & TopBit) // Negative float. |
| return 0 - U; // Map onto the low half of integers, order reversed. |
| return U + TopBit; // Positive floats map onto the high half of integers. |
| } |
| }; |
| |
| /// \brief Information about the scope specifier in the qualified-id code |
| /// completion (e.g. "ns::ab?"). |
| struct SpecifiedScope { |
| /// The scope specifier as written. For example, for completion "ns::ab?", the |
| /// written scope specifier is "ns". |
| std::string Written; |
| // If this scope specifier is recognized in Sema (e.g. as a namespace |
| // context), this will be set to the fully qualfied name of the corresponding |
| // context. |
| std::string Resolved; |
| }; |
| |
| /// \brief Information from sema about (parital) symbol names to be completed. |
| /// For example, for completion "ns::ab^", this stores the scope specifier |
| /// "ns::" and the completion filter text "ab". |
| struct NameToComplete { |
| // The partial identifier being completed, without qualifier. |
| std::string Filter; |
| |
| /// This is set if the completion is for qualified IDs, e.g. "abc::x^". |
| llvm::Optional<SpecifiedScope> SSInfo; |
| }; |
| |
| SpecifiedScope extraCompletionScope(Sema &S, const CXXScopeSpec &SS); |
| |
| class CompletionItemsCollector : public CodeCompleteConsumer { |
| public: |
| CompletionItemsCollector(const CodeCompleteOptions &CodeCompleteOpts, |
| CompletionList &Items, NameToComplete &CompletedName) |
| : CodeCompleteConsumer(CodeCompleteOpts.getClangCompleteOpts(), |
| /*OutputIsBinary=*/false), |
| ClangdOpts(CodeCompleteOpts), Items(Items), |
| Allocator(std::make_shared<clang::GlobalCodeCompletionAllocator>()), |
| CCTUInfo(Allocator), CompletedName(CompletedName), |
| EnableSnippets(CodeCompleteOpts.EnableSnippets) {} |
| |
| void ProcessCodeCompleteResults(Sema &S, CodeCompletionContext Context, |
| CodeCompletionResult *Results, |
| unsigned NumResults) override final { |
| if (auto SS = Context.getCXXScopeSpecifier()) |
| CompletedName.SSInfo = extraCompletionScope(S, **SS); |
| |
| CompletedName.Filter = S.getPreprocessor().getCodeCompletionFilter(); |
| std::priority_queue<CompletionCandidate> Candidates; |
| for (unsigned I = 0; I < NumResults; ++I) { |
| auto &Result = Results[I]; |
| if (!ClangdOpts.IncludeIneligibleResults && |
| (Result.Availability == CXAvailability_NotAvailable || |
| Result.Availability == CXAvailability_NotAccessible)) |
| continue; |
| if (!CompletedName.Filter.empty() && |
| !fuzzyMatch(S, Context, CompletedName.Filter, Result)) |
| continue; |
| Candidates.emplace(Result); |
| if (ClangdOpts.Limit && Candidates.size() > ClangdOpts.Limit) { |
| Candidates.pop(); |
| Items.isIncomplete = true; |
| } |
| } |
| while (!Candidates.empty()) { |
| auto &Candidate = Candidates.top(); |
| const auto *CCS = Candidate.Result->CreateCodeCompletionString( |
| S, Context, *Allocator, CCTUInfo, |
| CodeCompleteOpts.IncludeBriefComments); |
| assert(CCS && "Expected the CodeCompletionString to be non-null"); |
| Items.items.push_back(ProcessCodeCompleteResult(Candidate, *CCS)); |
| Candidates.pop(); |
| } |
| std::reverse(Items.items.begin(), Items.items.end()); |
| } |
| |
| GlobalCodeCompletionAllocator &getAllocator() override { return *Allocator; } |
| |
| CodeCompletionTUInfo &getCodeCompletionTUInfo() override { return CCTUInfo; } |
| |
| private: |
| bool fuzzyMatch(Sema &S, const CodeCompletionContext &CCCtx, StringRef Filter, |
| CodeCompletionResult Result) { |
| switch (Result.Kind) { |
| case CodeCompletionResult::RK_Declaration: |
| if (auto *ID = Result.Declaration->getIdentifier()) |
| return fuzzyMatch(Filter, ID->getName()); |
| break; |
| case CodeCompletionResult::RK_Keyword: |
| return fuzzyMatch(Filter, Result.Keyword); |
| case CodeCompletionResult::RK_Macro: |
| return fuzzyMatch(Filter, Result.Macro->getName()); |
| case CodeCompletionResult::RK_Pattern: |
| return fuzzyMatch(Filter, Result.Pattern->getTypedText()); |
| } |
| auto *CCS = Result.CreateCodeCompletionString( |
| S, CCCtx, *Allocator, CCTUInfo, /*IncludeBriefComments=*/false); |
| return fuzzyMatch(Filter, CCS->getTypedText()); |
| } |
| |
| // Checks whether Target matches the Filter. |
| // Currently just requires a case-insensitive subsequence match. |
| // FIXME: make stricter and word-based: 'unique_ptr' should not match 'que'. |
| // FIXME: return a score to be incorporated into ranking. |
| static bool fuzzyMatch(StringRef Filter, StringRef Target) { |
| size_t TPos = 0; |
| for (char C : Filter) { |
| TPos = Target.find_lower(C, TPos); |
| if (TPos == StringRef::npos) |
| return false; |
| } |
| return true; |
| } |
| |
| CompletionItem |
| ProcessCodeCompleteResult(const CompletionCandidate &Candidate, |
| const CodeCompletionString &CCS) const { |
| |
| // Adjust this to InsertTextFormat::Snippet iff we encounter a |
| // CK_Placeholder chunk in SnippetCompletionItemsCollector. |
| CompletionItem Item; |
| |
| Item.documentation = getDocumentation(CCS); |
| Item.sortText = Candidate.sortText(); |
| |
| Item.detail = getDetail(CCS); |
| Item.filterText = getFilterText(CCS); |
| getLabelAndInsertText(CCS, &Item.label, &Item.insertText, EnableSnippets); |
| |
| Item.insertTextFormat = EnableSnippets ? InsertTextFormat::Snippet |
| : InsertTextFormat::PlainText; |
| |
| // Fill in the kind field of the CompletionItem. |
| Item.kind = toCompletionItemKind(Candidate.Result->Kind, |
| Candidate.Result->CursorKind); |
| |
| return Item; |
| } |
| |
| CodeCompleteOptions ClangdOpts; |
| CompletionList &Items; |
| std::shared_ptr<clang::GlobalCodeCompletionAllocator> Allocator; |
| CodeCompletionTUInfo CCTUInfo; |
| NameToComplete &CompletedName; |
| bool EnableSnippets; |
| }; // CompletionItemsCollector |
| |
| class SignatureHelpCollector final : public CodeCompleteConsumer { |
| |
| public: |
| SignatureHelpCollector(const clang::CodeCompleteOptions &CodeCompleteOpts, |
| SignatureHelp &SigHelp) |
| : CodeCompleteConsumer(CodeCompleteOpts, /*OutputIsBinary=*/false), |
| SigHelp(SigHelp), |
| Allocator(std::make_shared<clang::GlobalCodeCompletionAllocator>()), |
| CCTUInfo(Allocator) {} |
| |
| void ProcessOverloadCandidates(Sema &S, unsigned CurrentArg, |
| OverloadCandidate *Candidates, |
| unsigned NumCandidates) override { |
| SigHelp.signatures.reserve(NumCandidates); |
| // FIXME(rwols): How can we determine the "active overload candidate"? |
| // Right now the overloaded candidates seem to be provided in a "best fit" |
| // order, so I'm not too worried about this. |
| SigHelp.activeSignature = 0; |
| assert(CurrentArg <= (unsigned)std::numeric_limits<int>::max() && |
| "too many arguments"); |
| SigHelp.activeParameter = static_cast<int>(CurrentArg); |
| for (unsigned I = 0; I < NumCandidates; ++I) { |
| const auto &Candidate = Candidates[I]; |
| const auto *CCS = Candidate.CreateSignatureString( |
| CurrentArg, S, *Allocator, CCTUInfo, true); |
| assert(CCS && "Expected the CodeCompletionString to be non-null"); |
| SigHelp.signatures.push_back(ProcessOverloadCandidate(Candidate, *CCS)); |
| } |
| } |
| |
| GlobalCodeCompletionAllocator &getAllocator() override { return *Allocator; } |
| |
| CodeCompletionTUInfo &getCodeCompletionTUInfo() override { return CCTUInfo; } |
| |
| private: |
| // FIXME(ioeric): consider moving CodeCompletionString logic here to |
| // CompletionString.h. |
| SignatureInformation |
| ProcessOverloadCandidate(const OverloadCandidate &Candidate, |
| const CodeCompletionString &CCS) const { |
| SignatureInformation Result; |
| const char *ReturnType = nullptr; |
| |
| Result.documentation = getDocumentation(CCS); |
| |
| for (const auto &Chunk : CCS) { |
| switch (Chunk.Kind) { |
| case CodeCompletionString::CK_ResultType: |
| // A piece of text that describes the type of an entity or, |
| // for functions and methods, the return type. |
| assert(!ReturnType && "Unexpected CK_ResultType"); |
| ReturnType = Chunk.Text; |
| break; |
| case CodeCompletionString::CK_Placeholder: |
| // A string that acts as a placeholder for, e.g., a function call |
| // argument. |
| // Intentional fallthrough here. |
| case CodeCompletionString::CK_CurrentParameter: { |
| // A piece of text that describes the parameter that corresponds to |
| // the code-completion location within a function call, message send, |
| // macro invocation, etc. |
| Result.label += Chunk.Text; |
| ParameterInformation Info; |
| Info.label = Chunk.Text; |
| Result.parameters.push_back(std::move(Info)); |
| break; |
| } |
| case CodeCompletionString::CK_Optional: { |
| // The rest of the parameters are defaulted/optional. |
| assert(Chunk.Optional && |
| "Expected the optional code completion string to be non-null."); |
| Result.label += |
| getOptionalParameters(*Chunk.Optional, Result.parameters); |
| break; |
| } |
| case CodeCompletionString::CK_VerticalSpace: |
| break; |
| default: |
| Result.label += Chunk.Text; |
| break; |
| } |
| } |
| if (ReturnType) { |
| Result.label += " -> "; |
| Result.label += ReturnType; |
| } |
| return Result; |
| } |
| |
| SignatureHelp &SigHelp; |
| std::shared_ptr<clang::GlobalCodeCompletionAllocator> Allocator; |
| CodeCompletionTUInfo CCTUInfo; |
| |
| }; // SignatureHelpCollector |
| |
| bool invokeCodeComplete(const Context &Ctx, |
| std::unique_ptr<CodeCompleteConsumer> Consumer, |
| const clang::CodeCompleteOptions &Options, |
| PathRef FileName, |
| const tooling::CompileCommand &Command, |
| PrecompiledPreamble const *Preamble, StringRef Contents, |
| Position Pos, IntrusiveRefCntPtr<vfs::FileSystem> VFS, |
| std::shared_ptr<PCHContainerOperations> PCHs) { |
| std::vector<const char *> ArgStrs; |
| for (const auto &S : Command.CommandLine) |
| ArgStrs.push_back(S.c_str()); |
| |
| VFS->setCurrentWorkingDirectory(Command.Directory); |
| |
| IgnoreDiagnostics DummyDiagsConsumer; |
| auto CI = createInvocationFromCommandLine( |
| ArgStrs, |
| CompilerInstance::createDiagnostics(new DiagnosticOptions, |
| &DummyDiagsConsumer, false), |
| VFS); |
| assert(CI && "Couldn't create CompilerInvocation"); |
| |
| std::unique_ptr<llvm::MemoryBuffer> ContentsBuffer = |
| llvm::MemoryBuffer::getMemBufferCopy(Contents, FileName); |
| |
| // Attempt to reuse the PCH from precompiled preamble, if it was built. |
| if (Preamble) { |
| auto Bounds = |
| ComputePreambleBounds(*CI->getLangOpts(), ContentsBuffer.get(), 0); |
| if (!Preamble->CanReuse(*CI, ContentsBuffer.get(), Bounds, VFS.get())) |
| Preamble = nullptr; |
| } |
| |
| auto Clang = prepareCompilerInstance( |
| std::move(CI), Preamble, std::move(ContentsBuffer), std::move(PCHs), |
| std::move(VFS), DummyDiagsConsumer); |
| auto &DiagOpts = Clang->getDiagnosticOpts(); |
| DiagOpts.IgnoreWarnings = true; |
| |
| auto &FrontendOpts = Clang->getFrontendOpts(); |
| FrontendOpts.SkipFunctionBodies = true; |
| FrontendOpts.CodeCompleteOpts = Options; |
| FrontendOpts.CodeCompletionAt.FileName = FileName; |
| FrontendOpts.CodeCompletionAt.Line = Pos.line + 1; |
| FrontendOpts.CodeCompletionAt.Column = Pos.character + 1; |
| |
| Clang->setCodeCompletionConsumer(Consumer.release()); |
| |
| SyntaxOnlyAction Action; |
| if (!Action.BeginSourceFile(*Clang, Clang->getFrontendOpts().Inputs[0])) { |
| log(Ctx, |
| "BeginSourceFile() failed when running codeComplete for " + FileName); |
| return false; |
| } |
| if (!Action.Execute()) { |
| log(Ctx, "Execute() failed when running codeComplete for " + FileName); |
| return false; |
| } |
| |
| Action.EndSourceFile(); |
| |
| return true; |
| } |
| |
| CompletionItem indexCompletionItem(const Symbol &Sym, llvm::StringRef Filter, |
| const SpecifiedScope &SSInfo) { |
| CompletionItem Item; |
| Item.kind = toCompletionItemKind(Sym.SymInfo.Kind); |
| Item.label = Sym.Name; |
| // FIXME(ioeric): support inserting/replacing scope qualifiers. |
| Item.insertText = Sym.Name; |
| // FIXME(ioeric): support snippets. |
| Item.insertTextFormat = InsertTextFormat::PlainText; |
| Item.filterText = Sym.Name; |
| |
| // FIXME(ioeric): sort symbols appropriately. |
| Item.sortText = ""; |
| |
| // FIXME(ioeric): use more symbol information (e.g. documentation, label) to |
| // populate the completion item. |
| |
| return Item; |
| } |
| |
| void completeWithIndex(const Context &Ctx, const SymbolIndex &Index, |
| llvm::StringRef Code, const SpecifiedScope &SSInfo, |
| llvm::StringRef Filter, CompletionList *Items) { |
| FuzzyFindRequest Req; |
| Req.Query = Filter; |
| // FIXME(ioeric): add more possible scopes based on using namespaces and |
| // containing namespaces. |
| StringRef Scope = SSInfo.Resolved.empty() ? SSInfo.Written : SSInfo.Resolved; |
| Req.Scopes = {Scope.trim(':').str()}; |
| |
| Items->isIncomplete = !Index.fuzzyFind(Ctx, Req, [&](const Symbol &Sym) { |
| Items->items.push_back(indexCompletionItem(Sym, Filter, SSInfo)); |
| }); |
| } |
| |
| SpecifiedScope extraCompletionScope(Sema &S, const CXXScopeSpec &SS) { |
| SpecifiedScope Info; |
| auto &SM = S.getSourceManager(); |
| auto SpecifierRange = SS.getRange(); |
| Info.Written = Lexer::getSourceText( |
| CharSourceRange::getCharRange(SpecifierRange), SM, clang::LangOptions()); |
| if (SS.isValid()) { |
| DeclContext *DC = S.computeDeclContext(SS); |
| if (auto *NS = llvm::dyn_cast<NamespaceDecl>(DC)) { |
| Info.Resolved = NS->getQualifiedNameAsString(); |
| } else if (llvm::dyn_cast<TranslationUnitDecl>(DC) != nullptr) { |
| Info.Resolved = "::"; |
| // Sema does not include the suffix "::" in the range of SS, so we add |
| // it back here. |
| Info.Written = "::"; |
| } |
| } |
| return Info; |
| } |
| |
| } // namespace |
| |
| clang::CodeCompleteOptions CodeCompleteOptions::getClangCompleteOpts() const { |
| clang::CodeCompleteOptions Result; |
| Result.IncludeCodePatterns = EnableSnippets && IncludeCodePatterns; |
| Result.IncludeMacros = IncludeMacros; |
| Result.IncludeGlobals = IncludeGlobals; |
| Result.IncludeBriefComments = IncludeBriefComments; |
| |
| // Enable index-based code completion when Index is provided. |
| Result.IncludeNamespaceLevelDecls = !Index; |
| |
| return Result; |
| } |
| |
| CompletionList codeComplete(const Context &Ctx, PathRef FileName, |
| const tooling::CompileCommand &Command, |
| PrecompiledPreamble const *Preamble, |
| StringRef Contents, Position Pos, |
| IntrusiveRefCntPtr<vfs::FileSystem> VFS, |
| std::shared_ptr<PCHContainerOperations> PCHs, |
| CodeCompleteOptions Opts) { |
| CompletionList Results; |
| NameToComplete CompletedName; |
| auto Consumer = |
| llvm::make_unique<CompletionItemsCollector>(Opts, Results, CompletedName); |
| invokeCodeComplete(Ctx, std::move(Consumer), Opts.getClangCompleteOpts(), |
| FileName, Command, Preamble, Contents, Pos, std::move(VFS), |
| std::move(PCHs)); |
| if (Opts.Index && CompletedName.SSInfo) { |
| if (!Results.items.empty()) |
| log(Ctx, "WARNING: Got completion results from sema for completion on " |
| "qualified ID while symbol index is provided."); |
| Results.items.clear(); |
| completeWithIndex(Ctx, *Opts.Index, Contents, *CompletedName.SSInfo, |
| CompletedName.Filter, &Results); |
| } |
| return Results; |
| } |
| |
| SignatureHelp signatureHelp(const Context &Ctx, PathRef FileName, |
| const tooling::CompileCommand &Command, |
| PrecompiledPreamble const *Preamble, |
| StringRef Contents, Position Pos, |
| IntrusiveRefCntPtr<vfs::FileSystem> VFS, |
| std::shared_ptr<PCHContainerOperations> PCHs) { |
| SignatureHelp Result; |
| clang::CodeCompleteOptions Options; |
| Options.IncludeGlobals = false; |
| Options.IncludeMacros = false; |
| Options.IncludeCodePatterns = false; |
| Options.IncludeBriefComments = true; |
| invokeCodeComplete(Ctx, |
| llvm::make_unique<SignatureHelpCollector>(Options, Result), |
| Options, FileName, Command, Preamble, Contents, Pos, |
| std::move(VFS), std::move(PCHs)); |
| return Result; |
| } |
| |
| } // namespace clangd |
| } // namespace clang |
