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indexer.cc
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indexer.cc
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#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/ASTUnit.h>
#include <clang/Frontend/CompilerInstance.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;
ASTUnit &Unit;
ASTContext *Ctx;
FileConsumer *file_consumer = nullptr;
IndexParam(ASTUnit &Unit, FileConsumer *file_consumer)
: Unit(Unit), file_consumer(file_consumer) {}
IndexFile *ConsumeFile(const FileEntry &File) {
IndexFile *db = file_consumer->TryConsumeFile(File, &file_contents);
// 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;
}
return db;
}
};
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, Range range, const DeclContext *DC,
Role role) const {
if (!DC)
return Use{{range, 0, SymbolKind::File, role}};
const Decl *D = cast<Decl>(DC);
switch (GetSymbolKind(D)) {
case SymbolKind::Func:
return Use{{range, db->ToFunc(GetUsr(D)).usr, SymbolKind::Func, role}};
case SymbolKind::Type:
return Use{{range, db->ToType(GetUsr(D)).usr, SymbolKind::Type, role}};
case SymbolKind::Var:
return Use{{range, db->ToVar(GetUsr(D)).usr, SymbolKind::Var, role}};
default:
return Use{{range, 0, SymbolKind::File, role}};
}
}
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);
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());
}
}
void AddMacroUse(IndexFile *db, SourceManager &SM, Usr usr, SymbolKind kind,
SourceLocation Spell) const {
const FileEntry *FE = SM.getFileEntryForID(SM.getFileID(Spell));
if (!FE)
return;
auto UID = FE->getUniqueID();
auto [it, inserted] = db->uid2lid_and_path.try_emplace(UID);
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;
it->second.second = Path.str();
}
Range spell =
FromTokenRange(SM, Ctx->getLangOpts(), SourceRange(Spell, Spell));
Use use{{spell, 0, SymbolKind::File, Role::Dynamic}, it->second.first};
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;
IndexFile *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 = std::max(db->language, 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, loc, SemDC, role);
SourceRange R = OrigD->getSourceRange();
entity->def.extent =
GetUse(db,
R.getBegin().isFileID()
? FromTokenRange(SM, Lang, OrigD->getSourceRange())
: loc,
LexDC, Role::None);
} else if (is_decl) {
entity->declarations.push_back(GetUse(db, loc, LexDC, role));
} else {
entity->uses.push_back(GetUse(db, 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, FromTokenRange(SM, Lang, {L1, L1}),
SemDC, Role::Definition);
type1.def.extent =
GetUse(db, 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, FromTokenRange(SM, Lang, {L, L}), SemDC,
Role::Definition);
var->def.extent =
GetUse(db, 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() ||
!ValidateRecord(RD))
offset = -1;
for (FieldDecl *FD : RD->fields()) {
int offset1 = offset >= 0 ? offset + Ctx->getFieldOffset(FD) : -1;
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, 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:
case Decl::VarTemplatePartialSpecialization:
var->def.kind = lsSymbolKind::Variable;
break;
case Decl::EnumConstant:
var->def.kind = lsSymbolKind::EnumMember;
// TODO Pretty printer may print =
if (is_def && strchr(var->def.detailed_name, '=') == nullptr) {
auto *ECD = cast<EnumConstantDecl>(D);
const auto &Val = ECD->getInitVal();
std::string init =
" = " + (Val.isSigned() ? std::to_string(Val.getSExtValue())
: std::to_string(Val.getZExtValue()));
var->def.hover = Intern(var->def.detailed_name + init);
}
break;
case Decl::UnresolvedUsingValue:
var->def.kind = lsSymbolKind::Variable;
break;
default:
LOG_S(INFO) << "Unhandled " << int(D->getKind());
break;
}
return true;
}
};
class IndexPPCallbacks : public PPCallbacks {
SourceManager &SM;
IndexParam ¶m;
std::pair<StringRef, Usr> GetMacro(const Token &Tok) const {
StringRef Name = Tok.getIdentifierInfo()->getName();
SmallString<256> USR("@macro@");
USR += Name;
return {Name, HashUsr(USR)};
}