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indexer.cc
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/* Copyright 2017-2018 ccls Authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
#include "indexer.hh"
#include "clang_tu.hh"
#include "log.hh"
#include "pipeline.hh"
#include "platform.hh"
#include "sema_manager.hh"
#include <clang/AST/AST.h>
#include <clang/Frontend/FrontendAction.h>
#include <clang/Index/IndexDataConsumer.h>
#include <clang/Index/IndexingAction.h>
#include <clang/Index/USRGeneration.h>
#include <clang/Lex/PreprocessorOptions.h>
#include <llvm/ADT/DenseSet.h>
#include <llvm/Support/CrashRecoveryContext.h>
#include <llvm/Support/Path.h>
#include <algorithm>
#include <inttypes.h>
#include <map>
#include <unordered_set>
using namespace clang;
namespace ccls {
namespace {
constexpr int kInitializerMaxLines = 3;
GroupMatch *multiVersionMatcher;
struct File {
std::string path;
int64_t mtime;
std::string content;
std::unique_ptr<IndexFile> db;
};
struct IndexParam {
std::unordered_map<llvm::sys::fs::UniqueID, File> UID2File;
std::unordered_map<llvm::sys::fs::UniqueID, bool> UID2multi;
struct DeclInfo {
Usr usr;
std::string short_name;
std::string qualified;
};
std::unordered_map<const Decl *, DeclInfo> Decl2Info;
VFS &vfs;
ASTContext *Ctx;
IndexParam(VFS &vfs) : vfs(vfs) {}
void SeenFile(const FileEntry &File) {
// If this is the first time we have seen the file (ignoring if we are
// generating an index for it):
auto [it, inserted] = UID2File.try_emplace(File.getUniqueID());
if (inserted) {
std::string path = PathFromFileEntry(File);
it->second.path = path;
it->second.mtime = File.getModificationTime();
if (!it->second.mtime)
if (auto tim = LastWriteTime(path))
it->second.mtime = *tim;
if (std::optional<std::string> content = ReadContent(path))
it->second.content = *content;
if (!vfs.Stamp(path, it->second.mtime, 1))
return;
it->second.db = std::make_unique<IndexFile>(File.getUniqueID(), path,
it->second.content);
}
}
IndexFile *ConsumeFile(const FileEntry &FE) {
SeenFile(FE);
return UID2File[FE.getUniqueID()].db.get();
}
bool UseMultiVersion(const FileEntry &FE) {
auto it = UID2multi.try_emplace(FE.getUniqueID());
if (it.second)
it.first->second = multiVersionMatcher->Matches(PathFromFileEntry(FE));
return it.first->second;
}
};
StringRef GetSourceInRange(const SourceManager &SM, const LangOptions &LangOpts,
SourceRange R) {
SourceLocation BLoc = R.getBegin(), ELoc = R.getEnd();
std::pair<FileID, unsigned> BInfo = SM.getDecomposedLoc(BLoc),
EInfo = SM.getDecomposedLoc(ELoc);
bool invalid = false;
StringRef Buf = SM.getBufferData(BInfo.first, &invalid);
if (invalid)
return "";
return Buf.substr(BInfo.second,
EInfo.second +
Lexer::MeasureTokenLength(ELoc, SM, LangOpts) -
BInfo.second);
}
Kind GetKind(const Decl *D, SymbolKind &kind) {
switch (D->getKind()) {
case Decl::LinkageSpec:
return Kind::Invalid;
case Decl::Namespace:
kind = SymbolKind::Namespace;
return Kind::Type;
case Decl::NamespaceAlias:
kind = SymbolKind::TypeAlias;
return Kind::Type;
case Decl::ObjCCategory:
case Decl::ObjCImplementation:
case Decl::ObjCInterface:
case Decl::ObjCProtocol:
kind = SymbolKind::Interface;
return Kind::Type;
case Decl::ObjCMethod:
kind = SymbolKind::Method;
return Kind::Func;
case Decl::ObjCProperty:
kind = SymbolKind::Property;
return Kind::Type;
case Decl::ClassTemplate:
kind = SymbolKind::Class;
return Kind::Type;
case Decl::FunctionTemplate:
kind = SymbolKind::Function;
return Kind::Func;
case Decl::TypeAliasTemplate:
kind = SymbolKind::TypeAlias;
return Kind::Type;
case Decl::VarTemplate:
kind = SymbolKind::Variable;
return Kind::Var;
case Decl::TemplateTemplateParm:
kind = SymbolKind::TypeParameter;
return Kind::Type;
case Decl::Enum:
kind = SymbolKind::Enum;
return Kind::Type;
case Decl::CXXRecord:
case Decl::Record:
kind = SymbolKind::Class;
// spec has no Union, use Class
if (auto *RD = dyn_cast<RecordDecl>(D))
if (RD->getTagKind() == TTK_Struct)
kind = SymbolKind::Struct;
return Kind::Type;
case Decl::ClassTemplateSpecialization:
case Decl::ClassTemplatePartialSpecialization:
kind = SymbolKind::Class;
return Kind::Type;
case Decl::TypeAlias:
case Decl::Typedef:
case Decl::UnresolvedUsingTypename:
kind = SymbolKind::TypeAlias;
return Kind::Type;
case Decl::Binding:
kind = SymbolKind::Variable;
return Kind::Var;
case Decl::Field:
case Decl::ObjCIvar:
kind = SymbolKind::Field;
return Kind::Var;
case Decl::Function:
kind = SymbolKind::Function;
return Kind::Func;
case Decl::CXXMethod: {
const auto *MD = cast<CXXMethodDecl>(D);
kind = MD->isStatic() ? SymbolKind::StaticMethod : SymbolKind::Method;
return Kind::Func;
}
case Decl::CXXConstructor:
kind = SymbolKind::Constructor;
return Kind::Func;
case Decl::CXXConversion:
case Decl::CXXDestructor:
kind = SymbolKind::Method;
return Kind::Func;
case Decl::Var:
case Decl::Decomposition:
kind = SymbolKind::Variable;
return Kind::Var;
case Decl::ImplicitParam:
case Decl::ParmVar:
// ccls extension
kind = SymbolKind::Parameter;
return Kind::Var;
case Decl::VarTemplateSpecialization:
case Decl::VarTemplatePartialSpecialization:
kind = SymbolKind::Variable;
return Kind::Var;
case Decl::EnumConstant:
kind = SymbolKind::EnumMember;
return Kind::Var;
case Decl::UnresolvedUsingValue:
kind = SymbolKind::Variable;
return Kind::Var;
case Decl::TranslationUnit:
return Kind::Invalid;
default:
LOG_S(INFO) << "unhandled " << int(D->getKind());
return Kind::Invalid;
}
}
LanguageId GetDeclLanguage(const Decl *D) {
switch (D->getKind()) {
default:
return LanguageId::C;
case Decl::ImplicitParam:
case Decl::ObjCAtDefsField:
case Decl::ObjCCategory:
case Decl::ObjCCategoryImpl:
case Decl::ObjCCompatibleAlias:
case Decl::ObjCImplementation:
case Decl::ObjCInterface:
case Decl::ObjCIvar:
case Decl::ObjCMethod:
case Decl::ObjCProperty:
case Decl::ObjCPropertyImpl:
case Decl::ObjCProtocol:
case Decl::ObjCTypeParam:
return LanguageId::ObjC;
case Decl::CXXConstructor:
case Decl::CXXConversion:
case Decl::CXXDestructor:
case Decl::CXXMethod:
case Decl::CXXRecord:
case Decl::ClassTemplate:
case Decl::ClassTemplatePartialSpecialization:
case Decl::ClassTemplateSpecialization:
case Decl::Friend:
case Decl::FriendTemplate:
case Decl::FunctionTemplate:
case Decl::LinkageSpec:
case Decl::Namespace:
case Decl::NamespaceAlias:
case Decl::NonTypeTemplateParm:
case Decl::StaticAssert:
case Decl::TemplateTemplateParm:
case Decl::TemplateTypeParm:
case Decl::UnresolvedUsingTypename:
case Decl::UnresolvedUsingValue:
case Decl::Using:
case Decl::UsingDirective:
case Decl::UsingShadow:
return LanguageId::Cpp;
}
}
// clang/lib/AST/DeclPrinter.cpp
QualType GetBaseType(QualType T, bool deduce_auto) {
QualType BaseType = T;
while (!BaseType.isNull() && !BaseType->isSpecifierType()) {
if (const PointerType *PTy = BaseType->getAs<PointerType>())
BaseType = PTy->getPointeeType();
else if (const BlockPointerType *BPy = BaseType->getAs<BlockPointerType>())
BaseType = BPy->getPointeeType();
else if (const ArrayType *ATy = dyn_cast<ArrayType>(BaseType))
BaseType = ATy->getElementType();
else if (const VectorType *VTy = BaseType->getAs<VectorType>())
BaseType = VTy->getElementType();
else if (const ReferenceType *RTy = BaseType->getAs<ReferenceType>())
BaseType = RTy->getPointeeType();
else if (const ParenType *PTy = BaseType->getAs<ParenType>())
BaseType = PTy->desugar();
else if (deduce_auto) {
if (const AutoType *ATy = BaseType->getAs<AutoType>())
BaseType = ATy->getDeducedType();
else
break;
} else
break;
}
return BaseType;
}
const Decl *GetTypeDecl(QualType T, bool *specialization = nullptr) {
Decl *D = nullptr;
T = GetBaseType(T.getUnqualifiedType(), true);
const Type *TP = T.getTypePtrOrNull();
if (!TP)
return nullptr;
try_again:
switch (TP->getTypeClass()) {
case Type::Typedef:
D = cast<TypedefType>(TP)->getDecl();
break;
case Type::ObjCObject:
D = cast<ObjCObjectType>(TP)->getInterface();
break;
case Type::ObjCInterface:
D = cast<ObjCInterfaceType>(TP)->getDecl();
break;
case Type::Record:
case Type::Enum:
D = cast<TagType>(TP)->getDecl();
break;
case Type::TemplateTypeParm:
D = cast<TemplateTypeParmType>(TP)->getDecl();
break;
case Type::TemplateSpecialization:
if (specialization)
*specialization = true;
if (const RecordType *Record = TP->getAs<RecordType>())
D = Record->getDecl();
else
D = cast<TemplateSpecializationType>(TP)
->getTemplateName()
.getAsTemplateDecl();
break;
case Type::Auto:
case Type::DeducedTemplateSpecialization:
TP = cast<DeducedType>(TP)->getDeducedType().getTypePtrOrNull();
if (TP)
goto try_again;
break;
case Type::InjectedClassName:
D = cast<InjectedClassNameType>(TP)->getDecl();
break;
// FIXME: Template type parameters!
case Type::Elaborated:
TP = cast<ElaboratedType>(TP)->getNamedType().getTypePtrOrNull();
goto try_again;
default:
break;
}
return D;
}
const Decl *GetAdjustedDecl(const Decl *D) {
while (D) {
if (auto *R = dyn_cast<CXXRecordDecl>(D)) {
if (auto *S = dyn_cast<ClassTemplateSpecializationDecl>(R)) {
if (!S->getTypeAsWritten()) {
llvm::PointerUnion<ClassTemplateDecl *,
ClassTemplatePartialSpecializationDecl *>
Result = S->getSpecializedTemplateOrPartial();
if (Result.is<ClassTemplateDecl *>())
D = Result.get<ClassTemplateDecl *>();
else
D = Result.get<ClassTemplatePartialSpecializationDecl *>();
continue;
}
} else if (auto *D1 = R->getInstantiatedFromMemberClass()) {
D = D1;
continue;
}
} else if (auto *ED = dyn_cast<EnumDecl>(D)) {
if (auto *D1 = ED->getInstantiatedFromMemberEnum()) {
D = D1;
continue;
}
}
break;
}
return D;
}
bool ValidateRecord(const RecordDecl *RD) {
for (const auto *I : RD->fields()) {
QualType FQT = I->getType();
if (FQT->isIncompleteType() || FQT->isDependentType())
return false;
if (const RecordType *ChildType = I->getType()->getAs<RecordType>())
if (const RecordDecl *Child = ChildType->getDecl())
if (!ValidateRecord(Child))
return false;
}
return true;
}
class IndexDataConsumer : public index::IndexDataConsumer {
public:
ASTContext *Ctx;
IndexParam ¶m;
std::string GetComment(const Decl *D) {
SourceManager &SM = Ctx->getSourceManager();
const RawComment *RC = Ctx->getRawCommentForAnyRedecl(D);
if (!RC)
return "";
StringRef Raw = RC->getRawText(Ctx->getSourceManager());
SourceRange R = RC->getSourceRange();
std::pair<FileID, unsigned> BInfo = SM.getDecomposedLoc(R.getBegin());
unsigned start_column = SM.getLineNumber(BInfo.first, BInfo.second);
std::string ret;
int pad = -1;
for (const char *p = Raw.data(), *E = Raw.end(); p < E;) {
// The first line starts with a comment marker, but the rest needs
// un-indenting.
unsigned skip = start_column - 1;
for (; skip > 0 && p < E && (*p == ' ' || *p == '\t'); p++)
skip--;
const char *q = p;
while (q < E && *q != '\n')
q++;
if (q < E)
q++;
// A minimalist approach to skip Doxygen comment markers.
// See https://www.stack.nl/~dimitri/doxygen/manual/docblocks.html
if (pad < 0) {
// First line, detect the length of comment marker and put into |pad|
const char *begin = p;
while (p < E && (*p == '/' || *p == '*' || *p == '-' || *p == '='))
p++;
if (p < E && (*p == '<' || *p == '!'))
p++;
if (p < E && *p == ' ')
p++;
if (p + 1 == q)
p++;
else
pad = int(p - begin);
} else {
// Other lines, skip |pad| bytes
int prefix = pad;
while (prefix > 0 && p < E &&
(*p == ' ' || *p == '/' || *p == '*' || *p == '<' || *p == '!'))
prefix--, p++;
}
ret.insert(ret.end(), p, q);
p = q;
}
while (ret.size() && isspace(ret.back()))
ret.pop_back();
if (StringRef(ret).endswith("*/"))
ret.resize(ret.size() - 2);
else if (StringRef(ret).endswith("\n/"))
ret.resize(ret.size() - 2);
while (ret.size() && isspace(ret.back()))
ret.pop_back();
return ret;
}
Usr GetUsr(const Decl *D, IndexParam::DeclInfo **info = nullptr) const {
D = D->getCanonicalDecl();
auto [it, inserted] = param.Decl2Info.try_emplace(D);
if (inserted) {
SmallString<256> USR;
index::generateUSRForDecl(D, USR);
auto &info = it->second;
info.usr = HashUsr(USR);
if (auto *ND = dyn_cast<NamedDecl>(D)) {
info.short_name = ND->getNameAsString();
info.qualified = ND->getQualifiedNameAsString();
SimplifyAnonymous(info.qualified);
}
}
if (info)
*info = &it->second;
return it->second.usr;
}
PrintingPolicy GetDefaultPolicy() const {
PrintingPolicy PP(Ctx->getLangOpts());
PP.AnonymousTagLocations = false;
PP.TerseOutput = true;
PP.PolishForDeclaration = true;
PP.ConstantsAsWritten = true;
PP.SuppressTagKeyword = true;
PP.SuppressInitializers = true;
PP.FullyQualifiedName = false;
return PP;
}
static void SimplifyAnonymous(std::string &name) {
for (std::string::size_type i = 0;;) {
if ((i = name.find("(anonymous ", i)) == std::string::npos)
break;
i++;
if (name.size() - i > 19 && name.compare(i + 10, 9, "namespace") == 0)
name.replace(i, 19, "anon ns");
else
name.replace(i, 9, "anon");
}
}
template <typename Def>
void SetName(const Decl *D, std::string_view short_name,
std::string_view qualified, Def &def) {
SmallString<256> Str;
llvm::raw_svector_ostream OS(Str);
D->print(OS, GetDefaultPolicy());
std::string name = OS.str();
SimplifyAnonymous(name);
// Remove \n in DeclPrinter.cpp "{\n" + if(!TerseOutput)something + "}"
for (std::string::size_type i = 0;;) {
if ((i = name.find("{\n}", i)) == std::string::npos)
break;
name.replace(i, 3, "{}");
}
auto i = name.find(short_name);
if (short_name.size())
while (i != std::string::npos && ((i && isIdentifierBody(name[i - 1])) ||
isIdentifierBody(name[i + short_name.size()])))
i = name.find(short_name, i + short_name.size());
if (i == std::string::npos) {
// e.g. operator type-parameter-1
i = 0;
def.short_name_offset = 0;
} else if (short_name.empty() || (i >= 2 && name[i - 2] == ':')) {
// Don't replace name with qualified name in ns::name Cls::*name
def.short_name_offset = i;
} else {
name.replace(i, short_name.size(), qualified);
def.short_name_offset = i + qualified.size() - short_name.size();
}
def.short_name_size = short_name.size();
for (int paren = 0; i; i--) {
// Skip parentheses in "(anon struct)::name"
if (name[i - 1] == ')')
paren++;
else if (name[i - 1] == '(')
paren--;
else if (!(paren > 0 || isIdentifierBody(name[i - 1]) ||
name[i - 1] == ':'))
break;
}
def.qual_name_offset = i;
def.detailed_name = Intern(name);
}
void SetVarName(const Decl *D, std::string_view short_name,
std::string_view qualified, IndexVar::Def &def) {
QualType T;
const Expr *init = nullptr;
bool deduced = false;
if (auto *VD = dyn_cast<VarDecl>(D)) {
T = VD->getType();
init = VD->getAnyInitializer();
def.storage = VD->getStorageClass();
} else if (auto *FD = dyn_cast<FieldDecl>(D)) {
T = FD->getType();
init = FD->getInClassInitializer();
} else if (auto *BD = dyn_cast<BindingDecl>(D)) {
T = BD->getType();
deduced = true;
}
if (!T.isNull()) {
if (T->getContainedDeducedType()) {
deduced = true;
} else if (auto *DT = dyn_cast<DecltypeType>(T)) {
// decltype(y) x;
while (DT && !DT->getUnderlyingType().isNull()) {
T = DT->getUnderlyingType();
DT = dyn_cast<DecltypeType>(T);
}
deduced = true;
}
}
if (!T.isNull() && deduced) {
SmallString<256> Str;
llvm::raw_svector_ostream OS(Str);
PrintingPolicy PP = GetDefaultPolicy();
T.print(OS, PP);
if (Str.size() &&
(Str.back() != ' ' && Str.back() != '*' && Str.back() != '&'))
Str += ' ';
def.qual_name_offset = Str.size();
def.short_name_offset = Str.size() + qualified.size() - short_name.size();
def.short_name_size = short_name.size();
Str += StringRef(qualified.data(), qualified.size());
def.detailed_name = Intern(Str);
} else {
SetName(D, short_name, qualified, def);
}
if (init) {
SourceManager &SM = Ctx->getSourceManager();
const LangOptions &Lang = Ctx->getLangOpts();
SourceRange R = SM.getExpansionRange(init->getSourceRange())
#if LLVM_VERSION_MAJOR >= 7
.getAsRange()
#endif
;
SourceLocation L = D->getLocation();
if (L.isMacroID() || !SM.isBeforeInTranslationUnit(L, R.getBegin()))
return;
StringRef Buf = GetSourceInRange(SM, Lang, R);
Twine Init = Buf.count('\n') <= kInitializerMaxLines - 1
? Buf.size() && Buf[0] == ':' ? Twine(" ", Buf)
: Twine(" = ", Buf)
: Twine();
Twine T = def.detailed_name + Init;
def.hover =
def.storage == SC_Static && strncmp(def.detailed_name, "static ", 7)
? Intern(("static " + T).str())
: Intern(T.str());
}
}
static int GetFileLID(IndexFile *db, SourceManager &SM, const FileEntry &FE) {
auto [it, inserted] = db->uid2lid_and_path.try_emplace(FE.getUniqueID());
if (inserted) {
it->second.first = db->uid2lid_and_path.size() - 1;
SmallString<256> Path = FE.tryGetRealPathName();
if (Path.empty())
Path = FE.getName();
if (!llvm::sys::path::is_absolute(Path) &&
!SM.getFileManager().makeAbsolutePath(Path))
return -1;
it->second.second = llvm::sys::path::convert_to_slash(Path.str());
}
return it->second.first;
}
void AddMacroUse(IndexFile *db, SourceManager &SM, Usr usr, Kind kind,
SourceLocation Spell) const {
const FileEntry *FE = SM.getFileEntryForID(SM.getFileID(Spell));
if (!FE)
return;
int lid = GetFileLID(db, SM, *FE);
if (lid < 0)
return;
Range spell =
FromTokenRange(SM, Ctx->getLangOpts(), SourceRange(Spell, Spell));
Use use{{spell, Role::Dynamic}, lid};
switch (kind) {
case Kind::Func:
db->ToFunc(usr).uses.push_back(use);
break;
case Kind::Type:
db->ToType(usr).uses.push_back(use);
break;
case Kind::Var:
db->ToVar(usr).uses.push_back(use);
break;
default:
llvm_unreachable("");
}
}
void CollectRecordMembers(IndexType &type, const RecordDecl *RD) {
SmallVector<std::pair<const RecordDecl *, int>, 2> Stack{{RD, 0}};
llvm::DenseSet<const RecordDecl *> Seen;
Seen.insert(RD);
while (Stack.size()) {
int offset;
std::tie(RD, offset) = Stack.back();
Stack.pop_back();
if (!RD->isCompleteDefinition() || RD->isDependentType() ||
RD->isInvalidDecl() || !ValidateRecord(RD))
offset = -1;
for (FieldDecl *FD : RD->fields()) {
int offset1 = offset < 0 ? -1 : offset + Ctx->getFieldOffset(FD);
if (FD->getIdentifier())
type.def.vars.emplace_back(GetUsr(FD), offset1);
else if (const auto *RT1 = FD->getType()->getAs<RecordType>()) {
if (const RecordDecl *RD1 = RT1->getDecl())
if (Seen.insert(RD1).second)
Stack.push_back({RD1, offset1});
}
}
}
}
public:
IndexDataConsumer(IndexParam ¶m) : param(param) {}
void initialize(ASTContext &Ctx) override {
this->Ctx = param.Ctx = &Ctx;
SourceManager &SM = Ctx.getSourceManager();
(void)param.ConsumeFile(*SM.getFileEntryForID(SM.getMainFileID()));
}
bool handleDeclOccurence(const Decl *D, index::SymbolRoleSet Roles,
ArrayRef<index::SymbolRelation> Relations,
#if LLVM_VERSION_MAJOR >= 7
SourceLocation Loc,
#else
FileID LocFID, unsigned LocOffset,
#endif
ASTNodeInfo ASTNode) override {
SourceManager &SM = Ctx->getSourceManager();
const LangOptions &Lang = Ctx->getLangOpts();
#if LLVM_VERSION_MAJOR < 7
SourceLocation Loc;
{
const SrcMgr::SLocEntry &Entry = SM.getSLocEntry(LocFID);
unsigned off = Entry.getOffset() + LocOffset;
if (!Entry.isFile())
off |= 1u << 31;
Loc = SourceLocation::getFromRawEncoding(off);
}
#else
FileID LocFID;
#endif
SourceLocation Spell = SM.getSpellingLoc(Loc);
const FileEntry *FE;
Range loc;
#if LLVM_VERSION_MAJOR < 7
CharSourceRange R;
if (SM.isMacroArgExpansion(Loc))
R = CharSourceRange::getTokenRange(Spell);
else {
auto P = SM.getExpansionRange(Loc);
R = CharSourceRange::getTokenRange(P.first, P.second);
}
#else
auto R = SM.isMacroArgExpansion(Loc) ? CharSourceRange::getTokenRange(Spell)
: SM.getExpansionRange(Loc);
#endif
loc = FromCharSourceRange(SM, Lang, R);
LocFID = SM.getFileID(R.getBegin());
FE = SM.getFileEntryForID(LocFID);
if (!FE)
return true;
int lid = -1;
IndexFile *db;
if (g_config->index.multiVersion && param.UseMultiVersion(*FE)) {
db = param.ConsumeFile(*SM.getFileEntryForID(SM.getMainFileID()));
if (!db)
return true;
param.SeenFile(*FE);
if (!SM.isWrittenInMainFile(R.getBegin()))
lid = GetFileLID(db, SM, *FE);
} else {
db = param.ConsumeFile(*FE);
if (!db)
return true;
}
// spell, extent, comments use OrigD while most others use adjusted |D|.
const Decl *OrigD = ASTNode.OrigD;
const DeclContext *SemDC = OrigD->getDeclContext()->getRedeclContext();
const DeclContext *LexDC = ASTNode.ContainerDC->getRedeclContext();
{
const NamespaceDecl *ND;
while ((ND = dyn_cast<NamespaceDecl>(cast<Decl>(SemDC))) &&
ND->isAnonymousNamespace())
SemDC = ND->getDeclContext()->getRedeclContext();
while ((ND = dyn_cast<NamespaceDecl>(cast<Decl>(LexDC))) &&
ND->isAnonymousNamespace())
LexDC = ND->getDeclContext()->getRedeclContext();
}
Role role = static_cast<Role>(Roles);
db->language = LanguageId((int)db->language | (int)GetDeclLanguage(D));
bool is_decl = Roles & uint32_t(index::SymbolRole::Declaration);
bool is_def = Roles & uint32_t(index::SymbolRole::Definition);
if (is_decl && D->getKind() == Decl::Binding)
is_def = true;
IndexFunc *func = nullptr;
IndexType *type = nullptr;
IndexVar *var = nullptr;
SymbolKind ls_kind;
Kind kind = GetKind(D, ls_kind);
if (is_def)
switch (D->getKind()) {
case Decl::CXXConversion: // *operator* int => *operator int*
case Decl::CXXDestructor: // *~*A => *~A*
case Decl::CXXMethod: // *operator*= => *operator=*
case Decl::Function: // operator delete
if (Loc.isFileID()) {
SourceRange R =
cast<FunctionDecl>(OrigD)->getNameInfo().getSourceRange();
if (R.getEnd().isFileID())
loc = FromTokenRange(SM, Lang, R);
}
break;
default:
break;
}
else {
// e.g. typedef Foo<int> gg; => Foo has an unadjusted `D`
const Decl *D1 = GetAdjustedDecl(D);
if (D1 && D1 != D)
D = D1;
}
IndexParam::DeclInfo *info;
Usr usr = GetUsr(D, &info);
auto do_def_decl = [&](auto *entity) {
Use use{{loc, role}, lid};
if (is_def) {
SourceRange R = OrigD->getSourceRange();
entity->def.spell = {use,
FromTokenRangeDefaulted(SM, Lang, R, FE, loc)};
GetKind(cast<Decl>(SemDC), entity->def.parent_kind);
} else if (is_decl) {
SourceRange R = OrigD->getSourceRange();
entity->declarations.push_back(
{use, FromTokenRangeDefaulted(SM, Lang, R, FE, loc)});
} else {
entity->uses.push_back(use);
return;
}
if (entity->def.comments[0] == '\0' && g_config->index.comments)
entity->def.comments = Intern(GetComment(OrigD));
};
switch (kind) {
case Kind::Invalid:
LOG_S(INFO) << "Unhandled " << int(D->getKind()) << " " << info->qualified
<< " in " << db->path << ":" << loc.start.line + 1;
return true;
case Kind::File:
return true;
case Kind::Func:
func = &db->ToFunc(usr);
func->def.kind = ls_kind;
// Mark as Role::Implicit to span one more column to the left/right.
if (!is_def && !is_decl &&
(D->getKind() == Decl::CXXConstructor ||
D->getKind() == Decl::CXXConversion))
role = Role(role | Role::Implicit);
do_def_decl(func);
if (Spell != Loc)
AddMacroUse(db, SM, usr, Kind::Func, Spell);
if (func->def.detailed_name[0] == '\0')
SetName(D, info->short_name, info->qualified, func->def);
if (is_def || is_decl) {
const Decl *DC = cast<Decl>(SemDC);
if (GetKind(DC, ls_kind) == Kind::Type)
db->ToType(GetUsr(DC)).def.funcs.push_back(usr);
} else {
const Decl *DC = cast<Decl>(LexDC);
if (GetKind(DC, ls_kind) == Kind::Func)
db->ToFunc(GetUsr(DC))
.def.callees.push_back({loc, usr, Kind::Func, role});
}
break;
case Kind::Type:
type = &db->ToType(usr);
type->def.kind = ls_kind;
do_def_decl(type);
if (Spell != Loc)
AddMacroUse(db, SM, usr, Kind::Type, Spell);
if (type->def.detailed_name[0] == '\0' && info->short_name.size())
SetName(D, info->short_name, info->qualified, type->def);
if (is_def || is_decl) {
const Decl *DC = cast<Decl>(SemDC);
if (GetKind(DC, ls_kind) == Kind::Type)
db->ToType(GetUsr(DC)).def.types.push_back(usr);
}
break;
case Kind::Var:
var = &db->ToVar(usr);
var->def.kind = ls_kind;
do_def_decl(var);
if (Spell != Loc)
AddMacroUse(db, SM, usr, Kind::Var, Spell);
if (var->def.detailed_name[0] == '\0')
SetVarName(D, info->short_name, info->qualified, var->def);
QualType T;
if (auto *VD = dyn_cast<ValueDecl>(D))
T = VD->getType();
if (is_def || is_decl) {
const Decl *DC = cast<Decl>(SemDC);
Kind kind = GetKind(DC, var->def.parent_kind);
if (kind == Kind::Func)
db->ToFunc(GetUsr(DC)).def.vars.push_back(usr);
else if (kind == Kind::Type && !isa<RecordDecl>(SemDC))
db->ToType(GetUsr(DC)).def.vars.emplace_back(usr, -1);
if (!T.isNull()) {
if (auto *BT = T->getAs<BuiltinType>()) {
Usr usr1 = static_cast<Usr>(BT->getKind());
var->def.type = usr1;
if (!isa<EnumConstantDecl>(D))
db->ToType(usr1).instances.push_back(usr);
} else if (const Decl *D1 = GetAdjustedDecl(GetTypeDecl(T))) {
if (isa<TemplateTypeParmDecl>(D1)) {
// e.g. TemplateTypeParmDecl is not handled by
// handleDeclOccurence.
SourceRange R1 = D1->getSourceRange();
if (SM.getFileID(R1.getBegin()) == LocFID) {
IndexParam::DeclInfo *info1;
Usr usr1 = GetUsr(D1, &info1);
IndexType &type1 = db->ToType(usr1);
SourceLocation L1 = D1->getLocation();
type1.def.spell = {
Use{{FromTokenRange(SM, Lang, {L1, L1}), Role::Definition},
lid},
FromTokenRange(SM, Lang, R1)};
type1.def.detailed_name = Intern(info1->short_name);
type1.def.short_name_size = int16_t(info1->short_name.size());
type1.def.kind = SymbolKind::TypeParameter;
type1.def.parent_kind = SymbolKind::Class;
var->def.type = usr1;
type1.instances.push_back(usr);
break;
}
}
IndexParam::DeclInfo *info1;
Usr usr1 = GetUsr(D1, &info1);
var->def.type = usr1;
if (!isa<EnumConstantDecl>(D))
db->ToType(usr1).instances.push_back(usr);
}
}
} else if (!var->def.spell && var->declarations.empty()) {
// e.g. lambda parameter
SourceLocation L = D->getLocation();
if (SM.getFileID(L) == LocFID) {
var->def.spell = {
Use{{FromTokenRange(SM, Lang, {L, L}), Role::Definition}, lid},
FromTokenRange(SM, Lang, D->getSourceRange())};
var->def.parent_kind = SymbolKind::Method;
}
}
break;
}
switch (D->getKind()) {
case Decl::Namespace:
if (D->isFirstDecl()) {
auto *ND = cast<NamespaceDecl>(D);
auto *ND1 = cast<Decl>(ND->getParent());
if (isa<NamespaceDecl>(ND1)) {
Usr usr1 = GetUsr(ND1);
type->def.bases.push_back(usr1);
db->ToType(usr1).derived.push_back(usr);
}
}
break;
case Decl::NamespaceAlias: {
auto *NAD = cast<NamespaceAliasDecl>(D);
if (const NamespaceDecl *ND = NAD->getNamespace()) {
Usr usr1 = GetUsr(ND);
type->def.alias_of = usr1;
(void)db->ToType(usr1);
}
break;
}
case Decl::CXXRecord:
if (is_def) {
auto *RD = dyn_cast<CXXRecordDecl>(D);
if (RD && RD->hasDefinition())
for (const CXXBaseSpecifier &Base : RD->bases())
if (const Decl *BaseD =
GetAdjustedDecl(GetTypeDecl(Base.getType()))) {
Usr usr1 = GetUsr(BaseD);
type->def.bases.push_back(usr1);
db->ToType(usr1).derived.push_back(usr);
}
}
[[fallthrough]];
case Decl::Record:
if (auto *RD = dyn_cast<RecordDecl>(D)) {
if (type->def.detailed_name[0] == '\0' && info->short_name.empty()) {
StringRef Tag;
switch (RD->getTagKind()) {
case TTK_Struct: Tag = "struct"; break;
case TTK_Interface: Tag = "__interface"; break;
case TTK_Union: Tag = "union"; break;
case TTK_Class: Tag = "class"; break;
case TTK_Enum: Tag = "enum"; break;
}
if (TypedefNameDecl *TD = RD->getTypedefNameForAnonDecl()) {
StringRef Name = TD->getName();
std::string name = ("anon " + Tag + " " + Name).str();
type->def.detailed_name = Intern(name);
type->def.short_name_size = name.size();
} else {
std::string name = ("anon " + Tag).str();
type->def.detailed_name = Intern(name);
type->def.short_name_size = name.size();
}
}
if (is_def)
if (auto *ORD = dyn_cast<RecordDecl>(OrigD))
CollectRecordMembers(*type, ORD);
}
break;
case Decl::ClassTemplateSpecialization:
case Decl::ClassTemplatePartialSpecialization:
type->def.kind = SymbolKind::Class;
if (is_def) {
if (auto *ORD = dyn_cast<RecordDecl>(OrigD))
CollectRecordMembers(*type, ORD);
if (auto *RD = dyn_cast<CXXRecordDecl>(D)) {
Decl *D1 = nullptr;
if (auto *SD = dyn_cast<ClassTemplatePartialSpecializationDecl>(RD))
D1 = SD->getSpecializedTemplate();