Check in LLVM r95781.
diff --git a/lib/Sema/CodeCompleteConsumer.cpp b/lib/Sema/CodeCompleteConsumer.cpp
new file mode 100644
index 0000000..8c4caaf
--- /dev/null
+++ b/lib/Sema/CodeCompleteConsumer.cpp
@@ -0,0 +1,625 @@
+//===--- CodeCompleteConsumer.cpp - Code Completion Interface ---*- C++ -*-===//
+//
+// 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 CodeCompleteConsumer class.
+//
+//===----------------------------------------------------------------------===//
+#include "clang/Sema/CodeCompleteConsumer.h"
+#include "clang/AST/DeclCXX.h"
+#include "clang/Parse/Scope.h"
+#include "clang/Lex/Preprocessor.h"
+#include "clang-c/Index.h"
+#include "Sema.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/StringSwitch.h"
+#include "llvm/Support/raw_ostream.h"
+#include <algorithm>
+#include <cstring>
+#include <functional>
+
+using namespace clang;
+using llvm::StringRef;
+
+//===----------------------------------------------------------------------===//
+// Code completion string implementation
+//===----------------------------------------------------------------------===//
+CodeCompletionString::Chunk::Chunk(ChunkKind Kind, llvm::StringRef Text)
+ : Kind(Kind), Text("")
+{
+ switch (Kind) {
+ case CK_TypedText:
+ case CK_Text:
+ case CK_Placeholder:
+ case CK_Informative:
+ case CK_ResultType:
+ case CK_CurrentParameter: {
+ char *New = new char [Text.size() + 1];
+ std::memcpy(New, Text.data(), Text.size());
+ New[Text.size()] = '\0';
+ this->Text = New;
+ break;
+ }
+
+ case CK_Optional:
+ llvm_unreachable("Optional strings cannot be created from text");
+ break;
+
+ case CK_LeftParen:
+ this->Text = "(";
+ break;
+
+ case CK_RightParen:
+ this->Text = ")";
+ break;
+
+ case CK_LeftBracket:
+ this->Text = "[";
+ break;
+
+ case CK_RightBracket:
+ this->Text = "]";
+ break;
+
+ case CK_LeftBrace:
+ this->Text = "{";
+ break;
+
+ case CK_RightBrace:
+ this->Text = "}";
+ break;
+
+ case CK_LeftAngle:
+ this->Text = "<";
+ break;
+
+ case CK_RightAngle:
+ this->Text = ">";
+ break;
+
+ case CK_Comma:
+ this->Text = ", ";
+ break;
+
+ case CK_Colon:
+ this->Text = ": ";
+ break;
+
+ case CK_SemiColon:
+ this->Text = ";";
+ break;
+
+ case CK_Equal:
+ this->Text = " = ";
+ break;
+
+ case CK_HorizontalSpace:
+ this->Text = " ";
+ break;
+
+ case CK_VerticalSpace:
+ this->Text = "\n";
+ break;
+ }
+}
+
+CodeCompletionString::Chunk
+CodeCompletionString::Chunk::CreateText(StringRef Text) {
+ return Chunk(CK_Text, Text);
+}
+
+CodeCompletionString::Chunk
+CodeCompletionString::Chunk::CreateOptional(
+ std::auto_ptr<CodeCompletionString> Optional) {
+ Chunk Result;
+ Result.Kind = CK_Optional;
+ Result.Optional = Optional.release();
+ return Result;
+}
+
+CodeCompletionString::Chunk
+CodeCompletionString::Chunk::CreatePlaceholder(StringRef Placeholder) {
+ return Chunk(CK_Placeholder, Placeholder);
+}
+
+CodeCompletionString::Chunk
+CodeCompletionString::Chunk::CreateInformative(StringRef Informative) {
+ return Chunk(CK_Informative, Informative);
+}
+
+CodeCompletionString::Chunk
+CodeCompletionString::Chunk::CreateResultType(StringRef ResultType) {
+ return Chunk(CK_ResultType, ResultType);
+}
+
+CodeCompletionString::Chunk
+CodeCompletionString::Chunk::CreateCurrentParameter(
+ StringRef CurrentParameter) {
+ return Chunk(CK_CurrentParameter, CurrentParameter);
+}
+
+CodeCompletionString::Chunk CodeCompletionString::Chunk::Clone() const {
+ switch (Kind) {
+ case CK_TypedText:
+ case CK_Text:
+ case CK_Placeholder:
+ case CK_Informative:
+ case CK_ResultType:
+ case CK_CurrentParameter:
+ case CK_LeftParen:
+ case CK_RightParen:
+ case CK_LeftBracket:
+ case CK_RightBracket:
+ case CK_LeftBrace:
+ case CK_RightBrace:
+ case CK_LeftAngle:
+ case CK_RightAngle:
+ case CK_Comma:
+ case CK_Colon:
+ case CK_SemiColon:
+ case CK_Equal:
+ case CK_HorizontalSpace:
+ case CK_VerticalSpace:
+ return Chunk(Kind, Text);
+
+ case CK_Optional: {
+ std::auto_ptr<CodeCompletionString> Opt(Optional->Clone());
+ return CreateOptional(Opt);
+ }
+ }
+
+ // Silence GCC warning.
+ return Chunk();
+}
+
+void
+CodeCompletionString::Chunk::Destroy() {
+ switch (Kind) {
+ case CK_Optional:
+ delete Optional;
+ break;
+
+ case CK_TypedText:
+ case CK_Text:
+ case CK_Placeholder:
+ case CK_Informative:
+ case CK_ResultType:
+ case CK_CurrentParameter:
+ delete [] Text;
+ break;
+
+ case CK_LeftParen:
+ case CK_RightParen:
+ case CK_LeftBracket:
+ case CK_RightBracket:
+ case CK_LeftBrace:
+ case CK_RightBrace:
+ case CK_LeftAngle:
+ case CK_RightAngle:
+ case CK_Comma:
+ case CK_Colon:
+ case CK_SemiColon:
+ case CK_Equal:
+ case CK_HorizontalSpace:
+ case CK_VerticalSpace:
+ break;
+ }
+}
+
+CodeCompletionString::~CodeCompletionString() {
+ std::for_each(Chunks.begin(), Chunks.end(),
+ std::mem_fun_ref(&Chunk::Destroy));
+}
+
+std::string CodeCompletionString::getAsString() const {
+ std::string Result;
+ llvm::raw_string_ostream OS(Result);
+
+ for (iterator C = begin(), CEnd = end(); C != CEnd; ++C) {
+ switch (C->Kind) {
+ case CK_Optional: OS << "{#" << C->Optional->getAsString() << "#}"; break;
+ case CK_Placeholder: OS << "<#" << C->Text << "#>"; break;
+
+ case CK_Informative:
+ case CK_ResultType:
+ OS << "[#" << C->Text << "#]";
+ break;
+
+ case CK_CurrentParameter: OS << "<#" << C->Text << "#>"; break;
+ default: OS << C->Text; break;
+ }
+ }
+ OS.flush();
+ return Result;
+}
+
+const char *CodeCompletionString::getTypedText() const {
+ for (iterator C = begin(), CEnd = end(); C != CEnd; ++C)
+ if (C->Kind == CK_TypedText)
+ return C->Text;
+
+ return 0;
+}
+
+CodeCompletionString *CodeCompletionString::Clone() const {
+ CodeCompletionString *Result = new CodeCompletionString;
+ for (iterator C = begin(), CEnd = end(); C != CEnd; ++C)
+ Result->AddChunk(C->Clone());
+ return Result;
+}
+
+static void WriteUnsigned(llvm::raw_ostream &OS, unsigned Value) {
+ OS.write((const char *)&Value, sizeof(unsigned));
+}
+
+static bool ReadUnsigned(const char *&Memory, const char *MemoryEnd,
+ unsigned &Value) {
+ if (Memory + sizeof(unsigned) > MemoryEnd)
+ return true;
+
+ memmove(&Value, Memory, sizeof(unsigned));
+ Memory += sizeof(unsigned);
+ return false;
+}
+
+void CodeCompletionString::Serialize(llvm::raw_ostream &OS) const {
+ // Write the number of chunks.
+ WriteUnsigned(OS, size());
+
+ for (iterator C = begin(), CEnd = end(); C != CEnd; ++C) {
+ WriteUnsigned(OS, C->Kind);
+
+ switch (C->Kind) {
+ case CK_TypedText:
+ case CK_Text:
+ case CK_Placeholder:
+ case CK_Informative:
+ case CK_ResultType:
+ case CK_CurrentParameter: {
+ const char *Text = C->Text;
+ unsigned StrLen = strlen(Text);
+ WriteUnsigned(OS, StrLen);
+ OS.write(Text, StrLen);
+ break;
+ }
+
+ case CK_Optional:
+ C->Optional->Serialize(OS);
+ break;
+
+ case CK_LeftParen:
+ case CK_RightParen:
+ case CK_LeftBracket:
+ case CK_RightBracket:
+ case CK_LeftBrace:
+ case CK_RightBrace:
+ case CK_LeftAngle:
+ case CK_RightAngle:
+ case CK_Comma:
+ case CK_Colon:
+ case CK_SemiColon:
+ case CK_Equal:
+ case CK_HorizontalSpace:
+ case CK_VerticalSpace:
+ break;
+ }
+ }
+}
+
+CodeCompletionString *CodeCompletionString::Deserialize(const char *&Str,
+ const char *StrEnd) {
+ if (Str == StrEnd || *Str == 0)
+ return 0;
+
+ CodeCompletionString *Result = new CodeCompletionString;
+ unsigned NumBlocks;
+ if (ReadUnsigned(Str, StrEnd, NumBlocks))
+ return Result;
+
+ for (unsigned I = 0; I != NumBlocks; ++I) {
+ if (Str + 1 >= StrEnd)
+ break;
+
+ // Parse the next kind.
+ unsigned KindValue;
+ if (ReadUnsigned(Str, StrEnd, KindValue))
+ return Result;
+
+ switch (ChunkKind Kind = (ChunkKind)KindValue) {
+ case CK_TypedText:
+ case CK_Text:
+ case CK_Placeholder:
+ case CK_Informative:
+ case CK_ResultType:
+ case CK_CurrentParameter: {
+ unsigned StrLen;
+ if (ReadUnsigned(Str, StrEnd, StrLen) || (Str + StrLen > StrEnd))
+ return Result;
+
+ Result->AddChunk(Chunk(Kind, StringRef(Str, StrLen)));
+ Str += StrLen;
+ break;
+ }
+
+ case CK_Optional: {
+ std::auto_ptr<CodeCompletionString> Optional(Deserialize(Str, StrEnd));
+ Result->AddOptionalChunk(Optional);
+ break;
+ }
+
+ case CK_LeftParen:
+ case CK_RightParen:
+ case CK_LeftBracket:
+ case CK_RightBracket:
+ case CK_LeftBrace:
+ case CK_RightBrace:
+ case CK_LeftAngle:
+ case CK_RightAngle:
+ case CK_Comma:
+ case CK_Colon:
+ case CK_SemiColon:
+ case CK_Equal:
+ case CK_HorizontalSpace:
+ case CK_VerticalSpace:
+ Result->AddChunk(Chunk(Kind));
+ break;
+ }
+ };
+
+ return Result;
+}
+
+void CodeCompleteConsumer::Result::Destroy() {
+ if (Kind == RK_Pattern) {
+ delete Pattern;
+ Pattern = 0;
+ }
+}
+
+//===----------------------------------------------------------------------===//
+// Code completion overload candidate implementation
+//===----------------------------------------------------------------------===//
+FunctionDecl *
+CodeCompleteConsumer::OverloadCandidate::getFunction() const {
+ if (getKind() == CK_Function)
+ return Function;
+ else if (getKind() == CK_FunctionTemplate)
+ return FunctionTemplate->getTemplatedDecl();
+ else
+ return 0;
+}
+
+const FunctionType *
+CodeCompleteConsumer::OverloadCandidate::getFunctionType() const {
+ switch (Kind) {
+ case CK_Function:
+ return Function->getType()->getAs<FunctionType>();
+
+ case CK_FunctionTemplate:
+ return FunctionTemplate->getTemplatedDecl()->getType()
+ ->getAs<FunctionType>();
+
+ case CK_FunctionType:
+ return Type;
+ }
+
+ return 0;
+}
+
+//===----------------------------------------------------------------------===//
+// Code completion consumer implementation
+//===----------------------------------------------------------------------===//
+
+CodeCompleteConsumer::~CodeCompleteConsumer() { }
+
+void
+PrintingCodeCompleteConsumer::ProcessCodeCompleteResults(Sema &SemaRef,
+ Result *Results,
+ unsigned NumResults) {
+ // Print the results.
+ for (unsigned I = 0; I != NumResults; ++I) {
+ OS << "COMPLETION: ";
+ switch (Results[I].Kind) {
+ case Result::RK_Declaration:
+ OS << Results[I].Declaration->getNameAsString() ;
+ if (Results[I].Hidden)
+ OS << " (Hidden)";
+ if (CodeCompletionString *CCS
+ = Results[I].CreateCodeCompletionString(SemaRef)) {
+ OS << " : " << CCS->getAsString();
+ delete CCS;
+ }
+
+ OS << '\n';
+ break;
+
+ case Result::RK_Keyword:
+ OS << Results[I].Keyword << '\n';
+ break;
+
+ case Result::RK_Macro: {
+ OS << Results[I].Macro->getName();
+ if (CodeCompletionString *CCS
+ = Results[I].CreateCodeCompletionString(SemaRef)) {
+ OS << " : " << CCS->getAsString();
+ delete CCS;
+ }
+ OS << '\n';
+ break;
+ }
+
+ case Result::RK_Pattern: {
+ OS << "Pattern : "
+ << Results[I].Pattern->getAsString() << '\n';
+ break;
+ }
+ }
+ }
+
+ // Once we've printed the code-completion results, suppress remaining
+ // diagnostics.
+ // FIXME: Move this somewhere else!
+ SemaRef.PP.getDiagnostics().setSuppressAllDiagnostics();
+}
+
+void
+PrintingCodeCompleteConsumer::ProcessOverloadCandidates(Sema &SemaRef,
+ unsigned CurrentArg,
+ OverloadCandidate *Candidates,
+ unsigned NumCandidates) {
+ for (unsigned I = 0; I != NumCandidates; ++I) {
+ if (CodeCompletionString *CCS
+ = Candidates[I].CreateSignatureString(CurrentArg, SemaRef)) {
+ OS << "OVERLOAD: " << CCS->getAsString() << "\n";
+ delete CCS;
+ }
+ }
+
+ // Once we've printed the code-completion results, suppress remaining
+ // diagnostics.
+ // FIXME: Move this somewhere else!
+ SemaRef.PP.getDiagnostics().setSuppressAllDiagnostics();
+}
+
+void
+CIndexCodeCompleteConsumer::ProcessCodeCompleteResults(Sema &SemaRef,
+ Result *Results,
+ unsigned NumResults) {
+ // Print the results.
+ for (unsigned I = 0; I != NumResults; ++I) {
+ CXCursorKind Kind = CXCursor_NotImplemented;
+
+ switch (Results[I].Kind) {
+ case Result::RK_Declaration:
+ switch (Results[I].Declaration->getKind()) {
+ case Decl::Record:
+ case Decl::CXXRecord:
+ case Decl::ClassTemplateSpecialization: {
+ RecordDecl *Record = cast<RecordDecl>(Results[I].Declaration);
+ if (Record->isStruct())
+ Kind = CXCursor_StructDecl;
+ else if (Record->isUnion())
+ Kind = CXCursor_UnionDecl;
+ else
+ Kind = CXCursor_ClassDecl;
+ break;
+ }
+
+ case Decl::ObjCMethod: {
+ ObjCMethodDecl *Method = cast<ObjCMethodDecl>(Results[I].Declaration);
+ if (Method->isInstanceMethod())
+ Kind = CXCursor_ObjCInstanceMethodDecl;
+ else
+ Kind = CXCursor_ObjCClassMethodDecl;
+ break;
+ }
+
+ case Decl::Typedef:
+ Kind = CXCursor_TypedefDecl;
+ break;
+
+ case Decl::Enum:
+ Kind = CXCursor_EnumDecl;
+ break;
+
+ case Decl::Field:
+ Kind = CXCursor_FieldDecl;
+ break;
+
+ case Decl::EnumConstant:
+ Kind = CXCursor_EnumConstantDecl;
+ break;
+
+ case Decl::Function:
+ case Decl::CXXMethod:
+ case Decl::CXXConstructor:
+ case Decl::CXXDestructor:
+ case Decl::CXXConversion:
+ Kind = CXCursor_FunctionDecl;
+ break;
+
+ case Decl::Var:
+ Kind = CXCursor_VarDecl;
+ break;
+
+ case Decl::ParmVar:
+ Kind = CXCursor_ParmDecl;
+ break;
+
+ case Decl::ObjCInterface:
+ Kind = CXCursor_ObjCInterfaceDecl;
+ break;
+
+ case Decl::ObjCCategory:
+ Kind = CXCursor_ObjCCategoryDecl;
+ break;
+
+ case Decl::ObjCProtocol:
+ Kind = CXCursor_ObjCProtocolDecl;
+ break;
+
+ case Decl::ObjCProperty:
+ Kind = CXCursor_ObjCPropertyDecl;
+ break;
+
+ case Decl::ObjCIvar:
+ Kind = CXCursor_ObjCIvarDecl;
+ break;
+
+ case Decl::ObjCImplementation:
+ Kind = CXCursor_ObjCImplementationDecl;
+ break;
+
+ case Decl::ObjCCategoryImpl:
+ Kind = CXCursor_ObjCCategoryImplDecl;
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case Result::RK_Keyword:
+ case Result::RK_Macro:
+ case Result::RK_Pattern:
+ Kind = CXCursor_NotImplemented;
+ break;
+ }
+
+ WriteUnsigned(OS, Kind);
+ CodeCompletionString *CCS = Results[I].CreateCodeCompletionString(SemaRef);
+ assert(CCS && "No code-completion string?");
+ CCS->Serialize(OS);
+ delete CCS;
+ }
+
+ // Once we've printed the code-completion results, suppress remaining
+ // diagnostics.
+ // FIXME: Move this somewhere else!
+ SemaRef.PP.getDiagnostics().setSuppressAllDiagnostics();
+}
+
+void
+CIndexCodeCompleteConsumer::ProcessOverloadCandidates(Sema &SemaRef,
+ unsigned CurrentArg,
+ OverloadCandidate *Candidates,
+ unsigned NumCandidates) {
+ for (unsigned I = 0; I != NumCandidates; ++I) {
+ WriteUnsigned(OS, CXCursor_NotImplemented);
+ CodeCompletionString *CCS
+ = Candidates[I].CreateSignatureString(CurrentArg, SemaRef);
+ assert(CCS && "No code-completion string?");
+ CCS->Serialize(OS);
+ delete CCS;
+ }
+
+ // Once we've printed the code-completion results, suppress remaining
+ // diagnostics.
+ // FIXME: Move this somewhere else!
+ SemaRef.PP.getDiagnostics().setSuppressAllDiagnostics();
+}