| //===- CIndexCodeCompletion.cpp - Code Completion API hooks ---------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the Clang-C Source Indexing library hooks for |
| // code completion. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "CIndexer.h" |
| #include "CXTranslationUnit.h" |
| #include "CXString.h" |
| #include "CXCursor.h" |
| #include "CXString.h" |
| #include "CIndexDiagnostic.h" |
| #include "clang/AST/Type.h" |
| #include "clang/AST/Decl.h" |
| #include "clang/AST/DeclObjC.h" |
| #include "clang/Basic/SourceManager.h" |
| #include "clang/Basic/FileManager.h" |
| #include "clang/Frontend/ASTUnit.h" |
| #include "clang/Frontend/CompilerInstance.h" |
| #include "clang/Frontend/FrontendDiagnostic.h" |
| #include "clang/Sema/CodeCompleteConsumer.h" |
| #include "llvm/ADT/SmallString.h" |
| #include "llvm/ADT/StringExtras.h" |
| #include "llvm/Support/Atomic.h" |
| #include "llvm/Support/CrashRecoveryContext.h" |
| #include "llvm/Support/MemoryBuffer.h" |
| #include "llvm/Support/Timer.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include "llvm/Support/Program.h" |
| #include <cstdlib> |
| #include <cstdio> |
| |
| |
| #ifdef UDP_CODE_COMPLETION_LOGGER |
| #include "clang/Basic/Version.h" |
| #include <arpa/inet.h> |
| #include <sys/socket.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| #endif |
| |
| using namespace clang; |
| using namespace clang::cxstring; |
| |
| extern "C" { |
| |
| enum CXCompletionChunkKind |
| clang_getCompletionChunkKind(CXCompletionString completion_string, |
| unsigned chunk_number) { |
| CodeCompletionString *CCStr = (CodeCompletionString *)completion_string; |
| if (!CCStr || chunk_number >= CCStr->size()) |
| return CXCompletionChunk_Text; |
| |
| switch ((*CCStr)[chunk_number].Kind) { |
| case CodeCompletionString::CK_TypedText: |
| return CXCompletionChunk_TypedText; |
| case CodeCompletionString::CK_Text: |
| return CXCompletionChunk_Text; |
| case CodeCompletionString::CK_Optional: |
| return CXCompletionChunk_Optional; |
| case CodeCompletionString::CK_Placeholder: |
| return CXCompletionChunk_Placeholder; |
| case CodeCompletionString::CK_Informative: |
| return CXCompletionChunk_Informative; |
| case CodeCompletionString::CK_ResultType: |
| return CXCompletionChunk_ResultType; |
| case CodeCompletionString::CK_CurrentParameter: |
| return CXCompletionChunk_CurrentParameter; |
| case CodeCompletionString::CK_LeftParen: |
| return CXCompletionChunk_LeftParen; |
| case CodeCompletionString::CK_RightParen: |
| return CXCompletionChunk_RightParen; |
| case CodeCompletionString::CK_LeftBracket: |
| return CXCompletionChunk_LeftBracket; |
| case CodeCompletionString::CK_RightBracket: |
| return CXCompletionChunk_RightBracket; |
| case CodeCompletionString::CK_LeftBrace: |
| return CXCompletionChunk_LeftBrace; |
| case CodeCompletionString::CK_RightBrace: |
| return CXCompletionChunk_RightBrace; |
| case CodeCompletionString::CK_LeftAngle: |
| return CXCompletionChunk_LeftAngle; |
| case CodeCompletionString::CK_RightAngle: |
| return CXCompletionChunk_RightAngle; |
| case CodeCompletionString::CK_Comma: |
| return CXCompletionChunk_Comma; |
| case CodeCompletionString::CK_Colon: |
| return CXCompletionChunk_Colon; |
| case CodeCompletionString::CK_SemiColon: |
| return CXCompletionChunk_SemiColon; |
| case CodeCompletionString::CK_Equal: |
| return CXCompletionChunk_Equal; |
| case CodeCompletionString::CK_HorizontalSpace: |
| return CXCompletionChunk_HorizontalSpace; |
| case CodeCompletionString::CK_VerticalSpace: |
| return CXCompletionChunk_VerticalSpace; |
| } |
| |
| llvm_unreachable("Invalid CompletionKind!"); |
| } |
| |
| CXString clang_getCompletionChunkText(CXCompletionString completion_string, |
| unsigned chunk_number) { |
| CodeCompletionString *CCStr = (CodeCompletionString *)completion_string; |
| if (!CCStr || chunk_number >= CCStr->size()) |
| return createCXString((const char*)0); |
| |
| switch ((*CCStr)[chunk_number].Kind) { |
| case CodeCompletionString::CK_TypedText: |
| case CodeCompletionString::CK_Text: |
| case CodeCompletionString::CK_Placeholder: |
| case CodeCompletionString::CK_CurrentParameter: |
| case CodeCompletionString::CK_Informative: |
| case CodeCompletionString::CK_LeftParen: |
| case CodeCompletionString::CK_RightParen: |
| case CodeCompletionString::CK_LeftBracket: |
| case CodeCompletionString::CK_RightBracket: |
| case CodeCompletionString::CK_LeftBrace: |
| case CodeCompletionString::CK_RightBrace: |
| case CodeCompletionString::CK_LeftAngle: |
| case CodeCompletionString::CK_RightAngle: |
| case CodeCompletionString::CK_Comma: |
| case CodeCompletionString::CK_ResultType: |
| case CodeCompletionString::CK_Colon: |
| case CodeCompletionString::CK_SemiColon: |
| case CodeCompletionString::CK_Equal: |
| case CodeCompletionString::CK_HorizontalSpace: |
| case CodeCompletionString::CK_VerticalSpace: |
| return createCXString((*CCStr)[chunk_number].Text, false); |
| |
| case CodeCompletionString::CK_Optional: |
| // Note: treated as an empty text block. |
| return createCXString(""); |
| } |
| |
| llvm_unreachable("Invalid CodeCompletionString Kind!"); |
| } |
| |
| |
| CXCompletionString |
| clang_getCompletionChunkCompletionString(CXCompletionString completion_string, |
| unsigned chunk_number) { |
| CodeCompletionString *CCStr = (CodeCompletionString *)completion_string; |
| if (!CCStr || chunk_number >= CCStr->size()) |
| return 0; |
| |
| switch ((*CCStr)[chunk_number].Kind) { |
| case CodeCompletionString::CK_TypedText: |
| case CodeCompletionString::CK_Text: |
| case CodeCompletionString::CK_Placeholder: |
| case CodeCompletionString::CK_CurrentParameter: |
| case CodeCompletionString::CK_Informative: |
| case CodeCompletionString::CK_LeftParen: |
| case CodeCompletionString::CK_RightParen: |
| case CodeCompletionString::CK_LeftBracket: |
| case CodeCompletionString::CK_RightBracket: |
| case CodeCompletionString::CK_LeftBrace: |
| case CodeCompletionString::CK_RightBrace: |
| case CodeCompletionString::CK_LeftAngle: |
| case CodeCompletionString::CK_RightAngle: |
| case CodeCompletionString::CK_Comma: |
| case CodeCompletionString::CK_ResultType: |
| case CodeCompletionString::CK_Colon: |
| case CodeCompletionString::CK_SemiColon: |
| case CodeCompletionString::CK_Equal: |
| case CodeCompletionString::CK_HorizontalSpace: |
| case CodeCompletionString::CK_VerticalSpace: |
| return 0; |
| |
| case CodeCompletionString::CK_Optional: |
| // Note: treated as an empty text block. |
| return (*CCStr)[chunk_number].Optional; |
| } |
| |
| llvm_unreachable("Invalid CompletionKind!"); |
| } |
| |
| unsigned clang_getNumCompletionChunks(CXCompletionString completion_string) { |
| CodeCompletionString *CCStr = (CodeCompletionString *)completion_string; |
| return CCStr? CCStr->size() : 0; |
| } |
| |
| unsigned clang_getCompletionPriority(CXCompletionString completion_string) { |
| CodeCompletionString *CCStr = (CodeCompletionString *)completion_string; |
| return CCStr? CCStr->getPriority() : unsigned(CCP_Unlikely); |
| } |
| |
| enum CXAvailabilityKind |
| clang_getCompletionAvailability(CXCompletionString completion_string) { |
| CodeCompletionString *CCStr = (CodeCompletionString *)completion_string; |
| return CCStr? static_cast<CXAvailabilityKind>(CCStr->getAvailability()) |
| : CXAvailability_Available; |
| } |
| |
| unsigned clang_getCompletionNumAnnotations(CXCompletionString completion_string) |
| { |
| CodeCompletionString *CCStr = (CodeCompletionString *)completion_string; |
| return CCStr ? CCStr->getAnnotationCount() : 0; |
| } |
| |
| CXString clang_getCompletionAnnotation(CXCompletionString completion_string, |
| unsigned annotation_number) { |
| CodeCompletionString *CCStr = (CodeCompletionString *)completion_string; |
| return CCStr ? createCXString(CCStr->getAnnotation(annotation_number)) |
| : createCXString((const char *) 0); |
| } |
| |
| CXString |
| clang_getCompletionParent(CXCompletionString completion_string, |
| CXCursorKind *kind) { |
| if (kind) |
| *kind = CXCursor_NotImplemented; |
| |
| CodeCompletionString *CCStr = (CodeCompletionString *)completion_string; |
| if (!CCStr) |
| return createCXString((const char *)0); |
| |
| if (kind) |
| *kind = CCStr->getParentContextKind(); |
| return createCXString(CCStr->getParentContextName(), /*DupString=*/false); |
| } |
| |
| /// \brief The CXCodeCompleteResults structure we allocate internally; |
| /// the client only sees the initial CXCodeCompleteResults structure. |
| struct AllocatedCXCodeCompleteResults : public CXCodeCompleteResults { |
| AllocatedCXCodeCompleteResults(const FileSystemOptions& FileSystemOpts); |
| ~AllocatedCXCodeCompleteResults(); |
| |
| /// \brief Diagnostics produced while performing code completion. |
| SmallVector<StoredDiagnostic, 8> Diagnostics; |
| |
| /// \brief Diag object |
| IntrusiveRefCntPtr<DiagnosticsEngine> Diag; |
| |
| /// \brief Language options used to adjust source locations. |
| LangOptions LangOpts; |
| |
| FileSystemOptions FileSystemOpts; |
| |
| /// \brief File manager, used for diagnostics. |
| IntrusiveRefCntPtr<FileManager> FileMgr; |
| |
| /// \brief Source manager, used for diagnostics. |
| IntrusiveRefCntPtr<SourceManager> SourceMgr; |
| |
| /// \brief Temporary files that should be removed once we have finished |
| /// with the code-completion results. |
| std::vector<llvm::sys::Path> TemporaryFiles; |
| |
| /// \brief Temporary buffers that will be deleted once we have finished with |
| /// the code-completion results. |
| SmallVector<const llvm::MemoryBuffer *, 1> TemporaryBuffers; |
| |
| /// \brief Allocator used to store globally cached code-completion results. |
| IntrusiveRefCntPtr<clang::GlobalCodeCompletionAllocator> |
| CachedCompletionAllocator; |
| |
| /// \brief Allocator used to store code completion results. |
| IntrusiveRefCntPtr<clang::GlobalCodeCompletionAllocator> |
| CodeCompletionAllocator; |
| |
| /// \brief Context under which completion occurred. |
| enum clang::CodeCompletionContext::Kind ContextKind; |
| |
| /// \brief A bitfield representing the acceptable completions for the |
| /// current context. |
| unsigned long long Contexts; |
| |
| /// \brief The kind of the container for the current context for completions. |
| enum CXCursorKind ContainerKind; |
| /// \brief The USR of the container for the current context for completions. |
| CXString ContainerUSR; |
| /// \brief a boolean value indicating whether there is complete information |
| /// about the container |
| unsigned ContainerIsIncomplete; |
| |
| /// \brief A string containing the Objective-C selector entered thus far for a |
| /// message send. |
| std::string Selector; |
| }; |
| |
| /// \brief Tracks the number of code-completion result objects that are |
| /// currently active. |
| /// |
| /// Used for debugging purposes only. |
| static llvm::sys::cas_flag CodeCompletionResultObjects; |
| |
| AllocatedCXCodeCompleteResults::AllocatedCXCodeCompleteResults( |
| const FileSystemOptions& FileSystemOpts) |
| : CXCodeCompleteResults(), |
| Diag(new DiagnosticsEngine( |
| IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs))), |
| FileSystemOpts(FileSystemOpts), |
| FileMgr(new FileManager(FileSystemOpts)), |
| SourceMgr(new SourceManager(*Diag, *FileMgr)), |
| CodeCompletionAllocator(new clang::GlobalCodeCompletionAllocator), |
| Contexts(CXCompletionContext_Unknown), |
| ContainerKind(CXCursor_InvalidCode), |
| ContainerUSR(createCXString("")), |
| ContainerIsIncomplete(1) |
| { |
| if (getenv("LIBCLANG_OBJTRACKING")) { |
| llvm::sys::AtomicIncrement(&CodeCompletionResultObjects); |
| fprintf(stderr, "+++ %d completion results\n", CodeCompletionResultObjects); |
| } |
| } |
| |
| AllocatedCXCodeCompleteResults::~AllocatedCXCodeCompleteResults() { |
| delete [] Results; |
| |
| clang_disposeString(ContainerUSR); |
| |
| for (unsigned I = 0, N = TemporaryFiles.size(); I != N; ++I) |
| TemporaryFiles[I].eraseFromDisk(); |
| for (unsigned I = 0, N = TemporaryBuffers.size(); I != N; ++I) |
| delete TemporaryBuffers[I]; |
| |
| if (getenv("LIBCLANG_OBJTRACKING")) { |
| llvm::sys::AtomicDecrement(&CodeCompletionResultObjects); |
| fprintf(stderr, "--- %d completion results\n", CodeCompletionResultObjects); |
| } |
| } |
| |
| } // end extern "C" |
| |
| static unsigned long long getContextsForContextKind( |
| enum CodeCompletionContext::Kind kind, |
| Sema &S) { |
| unsigned long long contexts = 0; |
| switch (kind) { |
| case CodeCompletionContext::CCC_OtherWithMacros: { |
| //We can allow macros here, but we don't know what else is permissible |
| //So we'll say the only thing permissible are macros |
| contexts = CXCompletionContext_MacroName; |
| break; |
| } |
| case CodeCompletionContext::CCC_TopLevel: |
| case CodeCompletionContext::CCC_ObjCIvarList: |
| case CodeCompletionContext::CCC_ClassStructUnion: |
| case CodeCompletionContext::CCC_Type: { |
| contexts = CXCompletionContext_AnyType | |
| CXCompletionContext_ObjCInterface; |
| if (S.getLangOpts().CPlusPlus) { |
| contexts |= CXCompletionContext_EnumTag | |
| CXCompletionContext_UnionTag | |
| CXCompletionContext_StructTag | |
| CXCompletionContext_ClassTag | |
| CXCompletionContext_NestedNameSpecifier; |
| } |
| break; |
| } |
| case CodeCompletionContext::CCC_Statement: { |
| contexts = CXCompletionContext_AnyType | |
| CXCompletionContext_ObjCInterface | |
| CXCompletionContext_AnyValue; |
| if (S.getLangOpts().CPlusPlus) { |
| contexts |= CXCompletionContext_EnumTag | |
| CXCompletionContext_UnionTag | |
| CXCompletionContext_StructTag | |
| CXCompletionContext_ClassTag | |
| CXCompletionContext_NestedNameSpecifier; |
| } |
| break; |
| } |
| case CodeCompletionContext::CCC_Expression: { |
| contexts = CXCompletionContext_AnyValue; |
| if (S.getLangOpts().CPlusPlus) { |
| contexts |= CXCompletionContext_AnyType | |
| CXCompletionContext_ObjCInterface | |
| CXCompletionContext_EnumTag | |
| CXCompletionContext_UnionTag | |
| CXCompletionContext_StructTag | |
| CXCompletionContext_ClassTag | |
| CXCompletionContext_NestedNameSpecifier; |
| } |
| break; |
| } |
| case CodeCompletionContext::CCC_ObjCMessageReceiver: { |
| contexts = CXCompletionContext_ObjCObjectValue | |
| CXCompletionContext_ObjCSelectorValue | |
| CXCompletionContext_ObjCInterface; |
| if (S.getLangOpts().CPlusPlus) { |
| contexts |= CXCompletionContext_CXXClassTypeValue | |
| CXCompletionContext_AnyType | |
| CXCompletionContext_EnumTag | |
| CXCompletionContext_UnionTag | |
| CXCompletionContext_StructTag | |
| CXCompletionContext_ClassTag | |
| CXCompletionContext_NestedNameSpecifier; |
| } |
| break; |
| } |
| case CodeCompletionContext::CCC_DotMemberAccess: { |
| contexts = CXCompletionContext_DotMemberAccess; |
| break; |
| } |
| case CodeCompletionContext::CCC_ArrowMemberAccess: { |
| contexts = CXCompletionContext_ArrowMemberAccess; |
| break; |
| } |
| case CodeCompletionContext::CCC_ObjCPropertyAccess: { |
| contexts = CXCompletionContext_ObjCPropertyAccess; |
| break; |
| } |
| case CodeCompletionContext::CCC_EnumTag: { |
| contexts = CXCompletionContext_EnumTag | |
| CXCompletionContext_NestedNameSpecifier; |
| break; |
| } |
| case CodeCompletionContext::CCC_UnionTag: { |
| contexts = CXCompletionContext_UnionTag | |
| CXCompletionContext_NestedNameSpecifier; |
| break; |
| } |
| case CodeCompletionContext::CCC_ClassOrStructTag: { |
| contexts = CXCompletionContext_StructTag | |
| CXCompletionContext_ClassTag | |
| CXCompletionContext_NestedNameSpecifier; |
| break; |
| } |
| case CodeCompletionContext::CCC_ObjCProtocolName: { |
| contexts = CXCompletionContext_ObjCProtocol; |
| break; |
| } |
| case CodeCompletionContext::CCC_Namespace: { |
| contexts = CXCompletionContext_Namespace; |
| break; |
| } |
| case CodeCompletionContext::CCC_PotentiallyQualifiedName: { |
| contexts = CXCompletionContext_NestedNameSpecifier; |
| break; |
| } |
| case CodeCompletionContext::CCC_MacroNameUse: { |
| contexts = CXCompletionContext_MacroName; |
| break; |
| } |
| case CodeCompletionContext::CCC_NaturalLanguage: { |
| contexts = CXCompletionContext_NaturalLanguage; |
| break; |
| } |
| case CodeCompletionContext::CCC_SelectorName: { |
| contexts = CXCompletionContext_ObjCSelectorName; |
| break; |
| } |
| case CodeCompletionContext::CCC_ParenthesizedExpression: { |
| contexts = CXCompletionContext_AnyType | |
| CXCompletionContext_ObjCInterface | |
| CXCompletionContext_AnyValue; |
| if (S.getLangOpts().CPlusPlus) { |
| contexts |= CXCompletionContext_EnumTag | |
| CXCompletionContext_UnionTag | |
| CXCompletionContext_StructTag | |
| CXCompletionContext_ClassTag | |
| CXCompletionContext_NestedNameSpecifier; |
| } |
| break; |
| } |
| case CodeCompletionContext::CCC_ObjCInstanceMessage: { |
| contexts = CXCompletionContext_ObjCInstanceMessage; |
| break; |
| } |
| case CodeCompletionContext::CCC_ObjCClassMessage: { |
| contexts = CXCompletionContext_ObjCClassMessage; |
| break; |
| } |
| case CodeCompletionContext::CCC_ObjCInterfaceName: { |
| contexts = CXCompletionContext_ObjCInterface; |
| break; |
| } |
| case CodeCompletionContext::CCC_ObjCCategoryName: { |
| contexts = CXCompletionContext_ObjCCategory; |
| break; |
| } |
| case CodeCompletionContext::CCC_Other: |
| case CodeCompletionContext::CCC_ObjCInterface: |
| case CodeCompletionContext::CCC_ObjCImplementation: |
| case CodeCompletionContext::CCC_Name: |
| case CodeCompletionContext::CCC_MacroName: |
| case CodeCompletionContext::CCC_PreprocessorExpression: |
| case CodeCompletionContext::CCC_PreprocessorDirective: |
| case CodeCompletionContext::CCC_TypeQualifiers: { |
| //Only Clang results should be accepted, so we'll set all of the other |
| //context bits to 0 (i.e. the empty set) |
| contexts = CXCompletionContext_Unexposed; |
| break; |
| } |
| case CodeCompletionContext::CCC_Recovery: { |
| //We don't know what the current context is, so we'll return unknown |
| //This is the equivalent of setting all of the other context bits |
| contexts = CXCompletionContext_Unknown; |
| break; |
| } |
| } |
| return contexts; |
| } |
| |
| namespace { |
| class CaptureCompletionResults : public CodeCompleteConsumer { |
| AllocatedCXCodeCompleteResults &AllocatedResults; |
| CodeCompletionTUInfo CCTUInfo; |
| SmallVector<CXCompletionResult, 16> StoredResults; |
| CXTranslationUnit *TU; |
| public: |
| CaptureCompletionResults(AllocatedCXCodeCompleteResults &Results, |
| CXTranslationUnit *TranslationUnit) |
| : CodeCompleteConsumer(true, false, true, false), |
| AllocatedResults(Results), CCTUInfo(Results.CodeCompletionAllocator), |
| TU(TranslationUnit) { } |
| ~CaptureCompletionResults() { Finish(); } |
| |
| virtual void ProcessCodeCompleteResults(Sema &S, |
| CodeCompletionContext Context, |
| CodeCompletionResult *Results, |
| unsigned NumResults) { |
| StoredResults.reserve(StoredResults.size() + NumResults); |
| for (unsigned I = 0; I != NumResults; ++I) { |
| CodeCompletionString *StoredCompletion |
| = Results[I].CreateCodeCompletionString(S, getAllocator(), |
| getCodeCompletionTUInfo()); |
| |
| CXCompletionResult R; |
| R.CursorKind = Results[I].CursorKind; |
| R.CompletionString = StoredCompletion; |
| StoredResults.push_back(R); |
| } |
| |
| enum CodeCompletionContext::Kind contextKind = Context.getKind(); |
| |
| AllocatedResults.ContextKind = contextKind; |
| AllocatedResults.Contexts = getContextsForContextKind(contextKind, S); |
| |
| AllocatedResults.Selector = ""; |
| if (Context.getNumSelIdents() > 0) { |
| for (unsigned i = 0; i < Context.getNumSelIdents(); i++) { |
| IdentifierInfo *selIdent = Context.getSelIdents()[i]; |
| if (selIdent != NULL) { |
| StringRef selectorString = Context.getSelIdents()[i]->getName(); |
| AllocatedResults.Selector += selectorString; |
| } |
| AllocatedResults.Selector += ":"; |
| } |
| } |
| |
| QualType baseType = Context.getBaseType(); |
| NamedDecl *D = NULL; |
| |
| if (!baseType.isNull()) { |
| // Get the declaration for a class/struct/union/enum type |
| if (const TagType *Tag = baseType->getAs<TagType>()) |
| D = Tag->getDecl(); |
| // Get the @interface declaration for a (possibly-qualified) Objective-C |
| // object pointer type, e.g., NSString* |
| else if (const ObjCObjectPointerType *ObjPtr = |
| baseType->getAs<ObjCObjectPointerType>()) |
| D = ObjPtr->getInterfaceDecl(); |
| // Get the @interface declaration for an Objective-C object type |
| else if (const ObjCObjectType *Obj = baseType->getAs<ObjCObjectType>()) |
| D = Obj->getInterface(); |
| // Get the class for a C++ injected-class-name |
| else if (const InjectedClassNameType *Injected = |
| baseType->getAs<InjectedClassNameType>()) |
| D = Injected->getDecl(); |
| } |
| |
| if (D != NULL) { |
| CXCursor cursor = cxcursor::MakeCXCursor(D, *TU); |
| |
| CXCursorKind cursorKind = clang_getCursorKind(cursor); |
| CXString cursorUSR = clang_getCursorUSR(cursor); |
| |
| // Normally, clients of CXString shouldn't care whether or not |
| // a CXString is managed by a pool or by explicitly malloc'ed memory. |
| // However, there are cases when AllocatedResults outlives the |
| // CXTranslationUnit. This is a workaround that failure mode. |
| if (cxstring::isManagedByPool(cursorUSR)) { |
| CXString heapStr = |
| cxstring::createCXString(clang_getCString(cursorUSR), true); |
| clang_disposeString(cursorUSR); |
| cursorUSR = heapStr; |
| } |
| |
| AllocatedResults.ContainerKind = cursorKind; |
| AllocatedResults.ContainerUSR = cursorUSR; |
| |
| const Type *type = baseType.getTypePtrOrNull(); |
| if (type != NULL) { |
| AllocatedResults.ContainerIsIncomplete = type->isIncompleteType(); |
| } |
| else { |
| AllocatedResults.ContainerIsIncomplete = 1; |
| } |
| } |
| else { |
| AllocatedResults.ContainerKind = CXCursor_InvalidCode; |
| AllocatedResults.ContainerUSR = createCXString(""); |
| AllocatedResults.ContainerIsIncomplete = 1; |
| } |
| } |
| |
| virtual void ProcessOverloadCandidates(Sema &S, unsigned CurrentArg, |
| OverloadCandidate *Candidates, |
| unsigned NumCandidates) { |
| StoredResults.reserve(StoredResults.size() + NumCandidates); |
| for (unsigned I = 0; I != NumCandidates; ++I) { |
| CodeCompletionString *StoredCompletion |
| = Candidates[I].CreateSignatureString(CurrentArg, S, getAllocator(), |
| getCodeCompletionTUInfo()); |
| |
| CXCompletionResult R; |
| R.CursorKind = CXCursor_NotImplemented; |
| R.CompletionString = StoredCompletion; |
| StoredResults.push_back(R); |
| } |
| } |
| |
| virtual CodeCompletionAllocator &getAllocator() { |
| return *AllocatedResults.CodeCompletionAllocator; |
| } |
| |
| virtual CodeCompletionTUInfo &getCodeCompletionTUInfo() { return CCTUInfo; } |
| |
| private: |
| void Finish() { |
| AllocatedResults.Results = new CXCompletionResult [StoredResults.size()]; |
| AllocatedResults.NumResults = StoredResults.size(); |
| std::memcpy(AllocatedResults.Results, StoredResults.data(), |
| StoredResults.size() * sizeof(CXCompletionResult)); |
| StoredResults.clear(); |
| } |
| }; |
| } |
| |
| extern "C" { |
| struct CodeCompleteAtInfo { |
| CXTranslationUnit TU; |
| const char *complete_filename; |
| unsigned complete_line; |
| unsigned complete_column; |
| struct CXUnsavedFile *unsaved_files; |
| unsigned num_unsaved_files; |
| unsigned options; |
| CXCodeCompleteResults *result; |
| }; |
| void clang_codeCompleteAt_Impl(void *UserData) { |
| CodeCompleteAtInfo *CCAI = static_cast<CodeCompleteAtInfo*>(UserData); |
| CXTranslationUnit TU = CCAI->TU; |
| const char *complete_filename = CCAI->complete_filename; |
| unsigned complete_line = CCAI->complete_line; |
| unsigned complete_column = CCAI->complete_column; |
| struct CXUnsavedFile *unsaved_files = CCAI->unsaved_files; |
| unsigned num_unsaved_files = CCAI->num_unsaved_files; |
| unsigned options = CCAI->options; |
| CCAI->result = 0; |
| |
| #ifdef UDP_CODE_COMPLETION_LOGGER |
| #ifdef UDP_CODE_COMPLETION_LOGGER_PORT |
| const llvm::TimeRecord &StartTime = llvm::TimeRecord::getCurrentTime(); |
| #endif |
| #endif |
| |
| bool EnableLogging = getenv("LIBCLANG_CODE_COMPLETION_LOGGING") != 0; |
| |
| ASTUnit *AST = static_cast<ASTUnit *>(TU->TUData); |
| if (!AST) |
| return; |
| |
| CIndexer *CXXIdx = (CIndexer*)TU->CIdx; |
| if (CXXIdx->isOptEnabled(CXGlobalOpt_ThreadBackgroundPriorityForEditing)) |
| setThreadBackgroundPriority(); |
| |
| ASTUnit::ConcurrencyCheck Check(*AST); |
| |
| // Perform the remapping of source files. |
| SmallVector<ASTUnit::RemappedFile, 4> RemappedFiles; |
| for (unsigned I = 0; I != num_unsaved_files; ++I) { |
| StringRef Data(unsaved_files[I].Contents, unsaved_files[I].Length); |
| const llvm::MemoryBuffer *Buffer |
| = llvm::MemoryBuffer::getMemBufferCopy(Data, unsaved_files[I].Filename); |
| RemappedFiles.push_back(std::make_pair(unsaved_files[I].Filename, |
| Buffer)); |
| } |
| |
| if (EnableLogging) { |
| // FIXME: Add logging. |
| } |
| |
| // Parse the resulting source file to find code-completion results. |
| AllocatedCXCodeCompleteResults *Results = |
| new AllocatedCXCodeCompleteResults(AST->getFileSystemOpts()); |
| Results->Results = 0; |
| Results->NumResults = 0; |
| |
| // Create a code-completion consumer to capture the results. |
| CaptureCompletionResults Capture(*Results, &TU); |
| |
| // Perform completion. |
| AST->CodeComplete(complete_filename, complete_line, complete_column, |
| RemappedFiles.data(), RemappedFiles.size(), |
| (options & CXCodeComplete_IncludeMacros), |
| (options & CXCodeComplete_IncludeCodePatterns), |
| Capture, |
| *Results->Diag, Results->LangOpts, *Results->SourceMgr, |
| *Results->FileMgr, Results->Diagnostics, |
| Results->TemporaryBuffers); |
| |
| // Keep a reference to the allocator used for cached global completions, so |
| // that we can be sure that the memory used by our code completion strings |
| // doesn't get freed due to subsequent reparses (while the code completion |
| // results are still active). |
| Results->CachedCompletionAllocator = AST->getCachedCompletionAllocator(); |
| |
| |
| |
| #ifdef UDP_CODE_COMPLETION_LOGGER |
| #ifdef UDP_CODE_COMPLETION_LOGGER_PORT |
| const llvm::TimeRecord &EndTime = llvm::TimeRecord::getCurrentTime(); |
| SmallString<256> LogResult; |
| llvm::raw_svector_ostream os(LogResult); |
| |
| // Figure out the language and whether or not it uses PCH. |
| const char *lang = 0; |
| bool usesPCH = false; |
| |
| for (std::vector<const char*>::iterator I = argv.begin(), E = argv.end(); |
| I != E; ++I) { |
| if (*I == 0) |
| continue; |
| if (strcmp(*I, "-x") == 0) { |
| if (I + 1 != E) { |
| lang = *(++I); |
| continue; |
| } |
| } |
| else if (strcmp(*I, "-include") == 0) { |
| if (I+1 != E) { |
| const char *arg = *(++I); |
| SmallString<512> pchName; |
| { |
| llvm::raw_svector_ostream os(pchName); |
| os << arg << ".pth"; |
| } |
| pchName.push_back('\0'); |
| struct stat stat_results; |
| if (stat(pchName.str().c_str(), &stat_results) == 0) |
| usesPCH = true; |
| continue; |
| } |
| } |
| } |
| |
| os << "{ "; |
| os << "\"wall\": " << (EndTime.getWallTime() - StartTime.getWallTime()); |
| os << ", \"numRes\": " << Results->NumResults; |
| os << ", \"diags\": " << Results->Diagnostics.size(); |
| os << ", \"pch\": " << (usesPCH ? "true" : "false"); |
| os << ", \"lang\": \"" << (lang ? lang : "<unknown>") << '"'; |
| const char *name = getlogin(); |
| os << ", \"user\": \"" << (name ? name : "unknown") << '"'; |
| os << ", \"clangVer\": \"" << getClangFullVersion() << '"'; |
| os << " }"; |
| |
| StringRef res = os.str(); |
| if (res.size() > 0) { |
| do { |
| // Setup the UDP socket. |
| struct sockaddr_in servaddr; |
| bzero(&servaddr, sizeof(servaddr)); |
| servaddr.sin_family = AF_INET; |
| servaddr.sin_port = htons(UDP_CODE_COMPLETION_LOGGER_PORT); |
| if (inet_pton(AF_INET, UDP_CODE_COMPLETION_LOGGER, |
| &servaddr.sin_addr) <= 0) |
| break; |
| |
| int sockfd = socket(AF_INET, SOCK_DGRAM, 0); |
| if (sockfd < 0) |
| break; |
| |
| sendto(sockfd, res.data(), res.size(), 0, |
| (struct sockaddr *)&servaddr, sizeof(servaddr)); |
| close(sockfd); |
| } |
| while (false); |
| } |
| #endif |
| #endif |
| CCAI->result = Results; |
| } |
| CXCodeCompleteResults *clang_codeCompleteAt(CXTranslationUnit TU, |
| const char *complete_filename, |
| unsigned complete_line, |
| unsigned complete_column, |
| struct CXUnsavedFile *unsaved_files, |
| unsigned num_unsaved_files, |
| unsigned options) { |
| CodeCompleteAtInfo CCAI = { TU, complete_filename, complete_line, |
| complete_column, unsaved_files, num_unsaved_files, |
| options, 0 }; |
| llvm::CrashRecoveryContext CRC; |
| |
| if (!RunSafely(CRC, clang_codeCompleteAt_Impl, &CCAI)) { |
| fprintf(stderr, "libclang: crash detected in code completion\n"); |
| static_cast<ASTUnit *>(TU->TUData)->setUnsafeToFree(true); |
| return 0; |
| } else if (getenv("LIBCLANG_RESOURCE_USAGE")) |
| PrintLibclangResourceUsage(TU); |
| |
| return CCAI.result; |
| } |
| |
| unsigned clang_defaultCodeCompleteOptions(void) { |
| return CXCodeComplete_IncludeMacros; |
| } |
| |
| void clang_disposeCodeCompleteResults(CXCodeCompleteResults *ResultsIn) { |
| if (!ResultsIn) |
| return; |
| |
| AllocatedCXCodeCompleteResults *Results |
| = static_cast<AllocatedCXCodeCompleteResults*>(ResultsIn); |
| delete Results; |
| } |
| |
| unsigned |
| clang_codeCompleteGetNumDiagnostics(CXCodeCompleteResults *ResultsIn) { |
| AllocatedCXCodeCompleteResults *Results |
| = static_cast<AllocatedCXCodeCompleteResults*>(ResultsIn); |
| if (!Results) |
| return 0; |
| |
| return Results->Diagnostics.size(); |
| } |
| |
| CXDiagnostic |
| clang_codeCompleteGetDiagnostic(CXCodeCompleteResults *ResultsIn, |
| unsigned Index) { |
| AllocatedCXCodeCompleteResults *Results |
| = static_cast<AllocatedCXCodeCompleteResults*>(ResultsIn); |
| if (!Results || Index >= Results->Diagnostics.size()) |
| return 0; |
| |
| return new CXStoredDiagnostic(Results->Diagnostics[Index], Results->LangOpts); |
| } |
| |
| unsigned long long |
| clang_codeCompleteGetContexts(CXCodeCompleteResults *ResultsIn) { |
| AllocatedCXCodeCompleteResults *Results |
| = static_cast<AllocatedCXCodeCompleteResults*>(ResultsIn); |
| if (!Results) |
| return 0; |
| |
| return Results->Contexts; |
| } |
| |
| enum CXCursorKind clang_codeCompleteGetContainerKind( |
| CXCodeCompleteResults *ResultsIn, |
| unsigned *IsIncomplete) { |
| AllocatedCXCodeCompleteResults *Results = |
| static_cast<AllocatedCXCodeCompleteResults *>(ResultsIn); |
| if (!Results) |
| return CXCursor_InvalidCode; |
| |
| if (IsIncomplete != NULL) { |
| *IsIncomplete = Results->ContainerIsIncomplete; |
| } |
| |
| return Results->ContainerKind; |
| } |
| |
| CXString clang_codeCompleteGetContainerUSR(CXCodeCompleteResults *ResultsIn) { |
| AllocatedCXCodeCompleteResults *Results = |
| static_cast<AllocatedCXCodeCompleteResults *>(ResultsIn); |
| if (!Results) |
| return createCXString(""); |
| |
| return createCXString(clang_getCString(Results->ContainerUSR)); |
| } |
| |
| |
| CXString clang_codeCompleteGetObjCSelector(CXCodeCompleteResults *ResultsIn) { |
| AllocatedCXCodeCompleteResults *Results = |
| static_cast<AllocatedCXCodeCompleteResults *>(ResultsIn); |
| if (!Results) |
| return createCXString(""); |
| |
| return createCXString(Results->Selector); |
| } |
| |
| } // end extern "C" |
| |
| /// \brief Simple utility function that appends a \p New string to the given |
| /// \p Old string, using the \p Buffer for storage. |
| /// |
| /// \param Old The string to which we are appending. This parameter will be |
| /// updated to reflect the complete string. |
| /// |
| /// |
| /// \param New The string to append to \p Old. |
| /// |
| /// \param Buffer A buffer that stores the actual, concatenated string. It will |
| /// be used if the old string is already-non-empty. |
| static void AppendToString(StringRef &Old, StringRef New, |
| SmallString<256> &Buffer) { |
| if (Old.empty()) { |
| Old = New; |
| return; |
| } |
| |
| if (Buffer.empty()) |
| Buffer.append(Old.begin(), Old.end()); |
| Buffer.append(New.begin(), New.end()); |
| Old = Buffer.str(); |
| } |
| |
| /// \brief Get the typed-text blocks from the given code-completion string |
| /// and return them as a single string. |
| /// |
| /// \param String The code-completion string whose typed-text blocks will be |
| /// concatenated. |
| /// |
| /// \param Buffer A buffer used for storage of the completed name. |
| static StringRef GetTypedName(CodeCompletionString *String, |
| SmallString<256> &Buffer) { |
| StringRef Result; |
| for (CodeCompletionString::iterator C = String->begin(), CEnd = String->end(); |
| C != CEnd; ++C) { |
| if (C->Kind == CodeCompletionString::CK_TypedText) |
| AppendToString(Result, C->Text, Buffer); |
| } |
| |
| return Result; |
| } |
| |
| namespace { |
| struct OrderCompletionResults { |
| bool operator()(const CXCompletionResult &XR, |
| const CXCompletionResult &YR) const { |
| CodeCompletionString *X |
| = (CodeCompletionString *)XR.CompletionString; |
| CodeCompletionString *Y |
| = (CodeCompletionString *)YR.CompletionString; |
| |
| SmallString<256> XBuffer; |
| StringRef XText = GetTypedName(X, XBuffer); |
| SmallString<256> YBuffer; |
| StringRef YText = GetTypedName(Y, YBuffer); |
| |
| if (XText.empty() || YText.empty()) |
| return !XText.empty(); |
| |
| int result = XText.compare_lower(YText); |
| if (result < 0) |
| return true; |
| if (result > 0) |
| return false; |
| |
| result = XText.compare(YText); |
| return result < 0; |
| } |
| }; |
| } |
| |
| extern "C" { |
| void clang_sortCodeCompletionResults(CXCompletionResult *Results, |
| unsigned NumResults) { |
| std::stable_sort(Results, Results + NumResults, OrderCompletionResults()); |
| } |
| } |
