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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.h"
#include "clang_tu.h"
#include "log.hh"
#include "platform.h"
#include "serializer.h"
using ccls::Intern;
#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 <llvm/Support/Timer.h>
using namespace clang;
using llvm::Timer;
#include <algorithm>
#include <inttypes.h>
#include <limits.h>
#include <map>
#include <unordered_set>
namespace {
constexpr int kInitializerMaxLines = 3;
struct IndexParam {
std::unordered_map<llvm::sys::fs::UniqueID, std::string> SeenUniqueID;
std::unordered_map<std::string, FileContents> file_contents;
std::unordered_map<std::string, int64_t> file2write_time;
struct DeclInfo {
Usr usr;
std::string short_name;
std::string qualified;
};
std::unordered_map<const Decl *, DeclInfo> Decl2Info;
ASTContext *Ctx;
FileConsumer *file_consumer = nullptr;
IndexParam(FileConsumer *file_consumer) : file_consumer(file_consumer) {}
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] = SeenUniqueID.try_emplace(File.getUniqueID());
if (inserted) {
std::string file_name = FileName(File);
it->second = file_name;
// Set modification time.
std::optional<int64_t> write_time = LastWriteTime(file_name);
LOG_IF_S(ERROR, !write_time)
<< "failed to fetch write time for " << file_name;
if (write_time)
file2write_time[file_name] = *write_time;
}
}
IndexFile *ConsumeFile(const FileEntry &File) {
SeenFile(File);
return file_consumer->TryConsumeFile(File, &file_contents);
}
};
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);
}
SymbolKind GetSymbolKind(const Decl *D) {
switch (D->getKind()) {
case Decl::TranslationUnit:
return SymbolKind::File;
case Decl::ObjCMethod:
case Decl::FunctionTemplate:
case Decl::Function:
case Decl::CXXMethod:
case Decl::CXXConstructor:
case Decl::CXXConversion:
case Decl::CXXDestructor:
return SymbolKind::Func;
case Decl::Namespace:
case Decl::NamespaceAlias:
case Decl::ObjCCategory:
case Decl::ObjCInterface:
case Decl::ObjCProtocol:
case Decl::ClassTemplate:
case Decl::TypeAliasTemplate:
case Decl::TemplateTemplateParm:
case Decl::Enum:
case Decl::Record:
case Decl::CXXRecord:
case Decl::ClassTemplateSpecialization:
case Decl::ClassTemplatePartialSpecialization:
case Decl::TypeAlias:
case Decl::Typedef:
case Decl::UnresolvedUsingTypename:
return SymbolKind::Type;
case Decl::ObjCProperty:
case Decl::VarTemplate:
case Decl::Binding:
case Decl::Field:
case Decl::ObjCIvar:
case Decl::Var:
case Decl::ParmVar:
case Decl::ImplicitParam:
case Decl::Decomposition:
case Decl::VarTemplateSpecialization:
case Decl::VarTemplatePartialSpecialization:
case Decl::EnumConstant:
case Decl::UnresolvedUsingValue:
return SymbolKind::Var;
default:
return SymbolKind::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 *GetSpecialized(const Decl *D) {
if (!D)
return D;
Decl *Template = nullptr;
if (const CXXRecordDecl *CXXRecord = dyn_cast<CXXRecordDecl>(D)) {
if (const ClassTemplatePartialSpecializationDecl *PartialSpec =
dyn_cast<ClassTemplatePartialSpecializationDecl>(CXXRecord))
Template = PartialSpec->getSpecializedTemplate();
else if (const ClassTemplateSpecializationDecl *ClassSpec =
dyn_cast<ClassTemplateSpecializationDecl>(CXXRecord)) {
llvm::PointerUnion<ClassTemplateDecl *,
ClassTemplatePartialSpecializationDecl *>
Result = ClassSpec->getSpecializedTemplateOrPartial();
if (Result.is<ClassTemplateDecl *>())
Template = Result.get<ClassTemplateDecl *>();
else
Template = Result.get<ClassTemplatePartialSpecializationDecl *>();
} else
Template = CXXRecord->getInstantiatedFromMemberClass();
} else if (const FunctionDecl *Function = dyn_cast<FunctionDecl>(D)) {
Template = Function->getPrimaryTemplate();
if (!Template)
Template = Function->getInstantiatedFromMemberFunction();
} else if (const VarDecl *Var = dyn_cast<VarDecl>(D)) {
if (Var->isStaticDataMember())
Template = Var->getInstantiatedFromStaticDataMember();
} else if (const RedeclarableTemplateDecl *Tmpl =
dyn_cast<RedeclarableTemplateDecl>(D))
Template = Tmpl->getInstantiatedFromMemberTemplate();
else
return nullptr;
return Template;
}
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 (EndsWith(ret, "*/")) {
ret.resize(ret.size() - 2);
} else if (EndsWith(ret, "\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;
}
Use GetUse(IndexFile *db, int lid, Range range, const DeclContext *DC,
Role role) const {
if (!DC)
return {{range, 0, SymbolKind::File, role}, lid};
const Decl *D = cast<Decl>(DC);
switch (GetSymbolKind(D)) {
case SymbolKind::Func:
return {{range, db->ToFunc(GetUsr(D)).usr, SymbolKind::Func, role}, lid};
case SymbolKind::Type:
return {{range, db->ToType(GetUsr(D)).usr, SymbolKind::Type, role}, lid};
case SymbolKind::Var:
return {{range, db->ToVar(GetUsr(D)).usr, SymbolKind::Var, role}, lid};
default:
return {{range, 0, SymbolKind::File, role}, lid};
}
}
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 && isalnum(name[i - 1])) ||
isalnum(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.size() && (!i || name[i - 1] != ':')) {
name.replace(i, short_name.size(), qualified);
def.short_name_offset = i + qualified.size() - short_name.size();
} else {
def.short_name_offset = i;
}
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 || isalnum(name[i - 1]) || 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 binding = 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();
binding = true;
}
auto BT = GetBaseType(T, false);
if (!BT.isNull() && (binding || BT->getAs<AutoType>())) {
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.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 = Path.str();
}
return it->second.first;
}
void AddMacroUse(IndexFile *db, SourceManager &SM, Usr usr, SymbolKind 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, 0, SymbolKind::File, Role::Dynamic}, lid};
switch (kind) {
case SymbolKind::Func:
db->ToFunc(usr).uses.push_back(use);
break;
case SymbolKind::Type:
db->ToType(usr).uses.push_back(use);
break;
case SymbolKind::Var:
db->ToVar(usr).uses.push_back(use);
break;
default:
llvm_unreachable("");
}
}
public:
IndexDataConsumer(IndexParam ¶m) : param(param) {}
void initialize(ASTContext &Ctx) override { this->Ctx = param.Ctx = &Ctx; }
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) {
db = param.ConsumeFile(*SM.getFileEntryForID(SM.getMainFileID()));
if (!db)
return true;
param.SeenFile(*FE);
if (!SM.isInMainFile(R.getBegin()))
lid = GetFileLID(db, SM, *FE);
} else {
db = param.ConsumeFile(*FE);
if (!db)
return true;
}
const Decl *OrigD = ASTNode.OrigD;
const DeclContext *SemDC = OrigD->getDeclContext();
const DeclContext *LexDC = ASTNode.ContainerDC;
Role role = static_cast<Role>(Roles);
db->language = LanguageId((int)db->language | (int)GetDeclLanguage(OrigD));
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 kind = GetSymbolKind(D);
IndexParam::DeclInfo *info;
Usr usr = GetUsr(D, &info);
auto do_def_decl = [&](auto *entity) {
if (is_def) {
entity->def.spell = GetUse(db, lid, loc, SemDC, role);
SourceRange R = OrigD->getSourceRange();
entity->def.extent =
GetUse(db, lid,
R.getBegin().isFileID()
? FromTokenRange(SM, Lang, OrigD->getSourceRange())
: loc,
LexDC, Role::None);
} else if (is_decl) {
entity->declarations.push_back(GetUse(db, lid, loc, LexDC, role));
} else {
entity->uses.push_back(GetUse(db, lid, loc, LexDC, role));
return;
}
if (entity->def.comments[0] == '\0' && g_config->index.comments)
entity->def.comments = Intern(GetComment(OrigD));
};
switch (kind) {
case SymbolKind::Invalid:
LOG_S(INFO) << "Unhandled " << int(D->getKind()) << " " << info->qualified
<< " in " << db->path << ":" << loc.start.line + 1;
return true;
case SymbolKind::File:
return true;
case SymbolKind::Func:
func = &db->ToFunc(usr);
// Span one more column to the left/right if D is CXXConstructor.
if (!is_def && !is_decl && D->getKind() == Decl::CXXConstructor)
role = Role(role | Role::Implicit);
do_def_decl(func);
if (Spell != Loc)
AddMacroUse(db, SM, usr, SymbolKind::Func, Spell);
if (func->def.detailed_name[0] == '\0')
SetName(OrigD, info->short_name, info->qualified, func->def);
if (is_def || is_decl) {
const Decl *DC = cast<Decl>(SemDC);
if (GetSymbolKind(DC) == SymbolKind::Type)
db->ToType(GetUsr(DC)).def.funcs.push_back(usr);
} else {
const Decl *DC = cast<Decl>(LexDC);
if (GetSymbolKind(DC) == SymbolKind::Func)
db->ToFunc(GetUsr(DC))
.def.callees.push_back({{loc, usr, SymbolKind::Func, role}});
}
break;
case SymbolKind::Type:
type = &db->ToType(usr);
do_def_decl(type);
if (Spell != Loc)
AddMacroUse(db, SM, usr, SymbolKind::Type, Spell);
if (type->def.detailed_name[0] == '\0')
SetName(OrigD, info->short_name, info->qualified, type->def);
if (is_def || is_decl) {
const Decl *DC = cast<Decl>(SemDC);
if (GetSymbolKind(DC) == SymbolKind::Type)
db->ToType(GetUsr(DC)).def.types.push_back(usr);
}
break;
case SymbolKind::Var:
var = &db->ToVar(usr);
do_def_decl(var);
if (Spell != Loc)
AddMacroUse(db, SM, usr, SymbolKind::Var, Spell);
if (var->def.detailed_name[0] == '\0')
SetVarName(OrigD, info->short_name, info->qualified, var->def);
QualType T;
if (auto *VD = dyn_cast<VarDecl>(D))
T = VD->getType();
else if (auto *FD = dyn_cast<FieldDecl>(D))
T = FD->getType();
if (is_def || is_decl) {
const Decl *DC = cast<Decl>(SemDC);
if (GetSymbolKind(DC) == SymbolKind::Func)
db->ToFunc(GetUsr(DC)).def.vars.push_back(usr);
else if (auto *ND = dyn_cast<NamespaceDecl>(SemDC))
db->ToType(GetUsr(ND)).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;
db->ToType(usr1).instances.push_back(usr);
} else {
for (const Decl *D1 = GetTypeDecl(T); D1; D1 = GetSpecialized(D1)) {
IndexParam::DeclInfo *info1;
Usr usr1 = GetUsr(D1, &info1);
auto it = db->usr2type.find(usr1);
if (it != db->usr2type.end()) {
var->def.type = usr1;
it->second.instances.push_back(usr);
break;
}
// e.g. TemplateTypeParmDecl is not handled by
// handleDeclOccurence.
SourceRange R1 = D1->getSourceRange();
if (SM.getFileID(R1.getBegin()) == LocFID) {
IndexType &type1 = db->ToType(usr1);
SourceLocation L1 = D1->getLocation();
type1.def.spell =
GetUse(db, lid, FromTokenRange(SM, Lang, {L1, L1}), SemDC,
Role::Definition);
type1.def.extent = GetUse(db, lid, FromTokenRange(SM, Lang, R1),
LexDC, Role::None);
type1.def.detailed_name = Intern(info1->short_name);
type1.def.short_name_size = int16_t(info1->short_name.size());
type1.def.kind = lsSymbolKind::TypeParameter;
var->def.type = usr1;
type1.instances.push_back(usr);
break;
}
}
}
}
} else if (!var->def.spell && var->declarations.empty()) {
// e.g. lambda parameter
SourceLocation L = OrigD->getLocation();
if (SM.getFileID(L) == LocFID) {
var->def.spell = GetUse(db, lid, FromTokenRange(SM, Lang, {L, L}),
SemDC, Role::Definition);
var->def.extent =
GetUse(db, lid, FromTokenRange(SM, Lang, OrigD->getSourceRange()),
LexDC, Role::None);
}
}
break;
}
switch (D->getKind()) {
case Decl::Namespace:
type->def.kind = lsSymbolKind::Namespace;
if (OrigD->isFirstDecl()) {
auto *ND = cast<NamespaceDecl>(OrigD);
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: {
type->def.kind = lsSymbolKind::TypeAlias;
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::ObjCCategory:
case Decl::ObjCImplementation:
case Decl::ObjCInterface:
case Decl::ObjCProtocol:
type->def.kind = lsSymbolKind::Interface;
break;
case Decl::ObjCMethod:
func->def.kind = lsSymbolKind::Method;
break;
case Decl::ObjCProperty:
var->def.kind = lsSymbolKind::Property;
break;
case Decl::ClassTemplate:
type->def.kind = lsSymbolKind::Class;
break;
case Decl::FunctionTemplate:
func->def.kind = lsSymbolKind::Function;
break;
case Decl::TypeAliasTemplate:
type->def.kind = lsSymbolKind::TypeAlias;
break;
case Decl::VarTemplate:
var->def.kind = lsSymbolKind::Variable;
break;
case Decl::TemplateTemplateParm:
type->def.kind = lsSymbolKind::TypeParameter;
break;
case Decl::Enum:
type->def.kind = lsSymbolKind::Enum;
break;
case Decl::CXXRecord:
if (is_def) {
auto *RD = dyn_cast<CXXRecordDecl>(OrigD);
if (RD && RD->hasDefinition()) {
for (const CXXBaseSpecifier &Base : RD->bases()) {
QualType T = Base.getType();
const NamedDecl *BaseD = nullptr;
if (auto *TDT = T->getAs<TypedefType>()) {
BaseD = TDT->getDecl();
} else if (auto *TST = T->getAs<TemplateSpecializationType>()) {
BaseD = TST->getTemplateName().getAsTemplateDecl();
} else if (auto *RT = T->getAs<RecordType>()) {
BaseD = RT->getDecl();
}
if (BaseD) {
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>(OrigD)) {
// spec has no Union, use Class
type->def.kind = RD->getTagKind() == TTK_Struct ? lsSymbolKind::Struct
: lsSymbolKind::Class;
if (is_def) {
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});
}
}
}
}
}
break;
case Decl::ClassTemplateSpecialization:
case Decl::ClassTemplatePartialSpecialization:
type->def.kind = lsSymbolKind::Class;
if (is_def || is_decl) {
if (auto *RD = dyn_cast<CXXRecordDecl>(D)) {
Decl *D1 = nullptr;
if (auto *SD = dyn_cast<ClassTemplatePartialSpecializationDecl>(RD))
D1 = SD->getSpecializedTemplate();
else if (auto *SD = dyn_cast<ClassTemplateSpecializationDecl>(RD)) {
llvm::PointerUnion<ClassTemplateDecl *,
ClassTemplatePartialSpecializationDecl *>
Result = SD->getSpecializedTemplateOrPartial();
if (Result.is<ClassTemplateDecl *>())
D1 = Result.get<ClassTemplateDecl *>();
else
D1 = Result.get<ClassTemplatePartialSpecializationDecl *>();
} else
D1 = RD->getInstantiatedFromMemberClass();
if (D1) {
Usr usr1 = GetUsr(D1);
type->def.bases.push_back(usr1);
db->ToType(usr1).derived.push_back(usr);
}
}
}
break;
case Decl::TypeAlias:
case Decl::Typedef:
case Decl::UnresolvedUsingTypename:
type->def.kind = lsSymbolKind::TypeAlias;
if (auto *TD = dyn_cast<TypedefNameDecl>(D)) {
bool specialization = false;
QualType T = TD->getUnderlyingType();
if (const Decl *D1 = GetTypeDecl(T, &specialization)) {
Usr usr1 = GetUsr(D1);
IndexType &type1 = db->ToType(usr1);
type->def.alias_of = usr1;
// Not visited template<class T> struct B {typedef A<T> t;};
if (specialization) {
const TypeSourceInfo *TSI = TD->getTypeSourceInfo();
SourceLocation L1 = TSI->getTypeLoc().getBeginLoc();
if (SM.getFileID(L1) == LocFID) {
Range loc1 = FromTokenRange(SM, Lang, {L1, L1});
type1.uses.push_back(
GetUse(db, lid, loc1, LexDC, Role::Reference));
}
}
}
}
break;
case Decl::Binding:
var->def.kind = lsSymbolKind::Variable;
break;
case Decl::Field:
case Decl::ObjCIvar:
var->def.kind = lsSymbolKind::Field;
break;
case Decl::Function:
func->def.kind = lsSymbolKind::Function;
break;
case Decl::CXXMethod: {
const auto *MD = cast<CXXMethodDecl>(D);
func->def.kind =
MD->isStatic() ? lsSymbolKind::StaticMethod : lsSymbolKind::Method;
if (is_def || is_decl) {
if (auto *ND = dyn_cast<NamedDecl>(D)) {
SmallVector<const NamedDecl *, 8> OverDecls;
Ctx->getOverriddenMethods(ND, OverDecls);
for (const auto *ND1 : OverDecls) {
Usr usr1 = GetUsr(ND1);
func->def.bases.push_back(usr1);
db->ToFunc(usr1).derived.push_back(usr);
}
}
}
break;
}
case Decl::CXXConstructor:
case Decl::CXXConversion:
func->def.kind = lsSymbolKind::Constructor;
break;
case Decl::CXXDestructor:
func->def.kind = lsSymbolKind::Method;
break;
case Decl::Var:
case Decl::Decomposition:
var->def.kind = lsSymbolKind::Variable;
break;
case Decl::ImplicitParam:
case Decl::ParmVar:
// ccls extension
var->def.kind = lsSymbolKind::Parameter;
break;
case Decl::VarTemplateSpecialization: