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indexer.cc
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indexer.cc
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// Copyright 2017-2018 ccls Authors
// SPDX-License-Identifier: Apache-2.0
#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/Basic/TargetInfo.h>
#include <clang/Frontend/FrontendAction.h>
#include <clang/Frontend/MultiplexConsumer.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;
#if LLVM_VERSION_MAJOR >= 18 // llvmorg-18-init-10631-gedd690b02e16
#define TTK_Class TagTypeKind::Class
#define TTK_Enum TagTypeKind::Enum
#define TTK_Interface TagTypeKind::Interface
#define TTK_Struct TagTypeKind::Struct
#define TTK_Union TagTypeKind::Union
#endif
namespace ccls {
namespace {
GroupMatch *multiVersionMatcher;
struct File {
std::string path;
int64_t mtime;
std::string content;
std::unique_ptr<IndexFile> db;
};
struct IndexParam {
std::unordered_map<FileID, File> uid2file;
std::unordered_map<FileID, bool> uid2multi;
struct DeclInfo {
Usr usr;
std::string short_name;
std::string qualified;
};
std::unordered_map<const Decl *, DeclInfo> decl2Info;
VFS &vfs;
ASTContext *ctx;
bool no_linkage;
IndexParam(VFS &vfs, bool no_linkage) : vfs(vfs), no_linkage(no_linkage) {}
void seenFile(FileID fid) {
// 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(fid);
if (inserted) {
#if LLVM_VERSION_MAJOR < 19
const FileEntry *fe = ctx->getSourceManager().getFileEntryForID(fid);
#else
OptionalFileEntryRef fe = ctx->getSourceManager().getFileEntryRefForID(fid);
#endif
if (!fe)
return;
std::string path = pathFromFileEntry(*fe);
it->second.path = path;
it->second.mtime = fe->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, no_linkage ? 3 : 1))
return;
it->second.db = std::make_unique<IndexFile>(path, it->second.content, no_linkage);
}
}
IndexFile *consumeFile(FileID fid) {
seenFile(fid);
return uid2file[fid].db.get();
}
bool useMultiVersion(FileID fid) {
auto it = uid2multi.try_emplace(fid);
if (it.second) {
#if LLVM_VERSION_MAJOR < 19
if (const FileEntry *fe = ctx->getSourceManager().getFileEntryForID(fid))
#else
if (OptionalFileEntryRef fe = ctx->getSourceManager().getFileEntryRefForID(fid))
#endif
it.first->second = multiVersionMatcher->matches(pathFromFileEntry(*fe));
}
return it.first->second;
}
};
StringRef getSourceInRange(const SourceManager &sm, const LangOptions &langOpts, SourceRange sr) {
SourceLocation bloc = sr.getBegin(), eLoc = sr.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:
case Decl::NamespaceAlias:
kind = SymbolKind::Namespace;
return Kind::Type;
case Decl::ObjCCategory:
case Decl::ObjCCategoryImpl:
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::TemplateTypeParm:
kind = SymbolKind::TypeParameter;
return Kind::Type;
case Decl::TypeAlias:
case Decl::Typedef:
case Decl::UnresolvedUsingTypename:
kind = SymbolKind::TypeAlias;
return Kind::Type;
case Decl::Using:
kind = SymbolKind::Null; // ignored
return Kind::Invalid;
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::NonTypeTemplateParm:
// ccls extension
kind = SymbolKind::Parameter;
return Kind::Var;
case Decl::Var: {
auto vd = cast<VarDecl>(d);
if (vd->isStaticDataMember()) {
kind = SymbolKind::Field;
return Kind::Var;
}
[[fallthrough]];
}
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:
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->isExplicitSpecialization()) {
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 sr = rc->getSourceRange();
std::pair<FileID, unsigned> bInfo = sm.getDecomposedLoc(sr.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("*/") || 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();
llvm::raw_string_ostream os(info.qualified);
nd->printQualifiedName(os, getDefaultPolicy());
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.SuppressUnwrittenScope = g_config->index.name.suppressUnwrittenScope;
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(str.data(), str.size());
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 && isAsciiIdentifierContinue(name[i - 1])) || isAsciiIdentifierContinue(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;
def.short_name_size = name.size();
} 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();
}
// name may be empty while short_name is not.
def.short_name_size = name.empty() ? 0 : 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 || isAsciiIdentifierContinue(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 sr = sm.getExpansionRange(init->getSourceRange()).getAsRange();
SourceLocation l = d->getLocation();
if (l.isMacroID() || !sm.isBeforeInTranslationUnit(l, sr.getBegin()))
return;
StringRef buf = getSourceInRange(sm, lang, sr);
Twine init = buf.count('\n') <= g_config->index.maxInitializerLines - 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, FileID fid) {
auto [it, inserted] = db->uid2lid_and_path.try_emplace(fid);
if (inserted) {
#if LLVM_VERSION_MAJOR < 19
const FileEntry *fe = sm.getFileEntryForID(fid);
#else
OptionalFileEntryRef fe = sm.getFileEntryRefForID(fid);
#endif
if (!fe) {
it->second.first = -1;
return -1;
}
it->second.first = db->uid2lid_and_path.size() - 1;
it->second.second = pathFromFileEntry(*fe);
}
return it->second.first;
}
void addMacroUse(IndexFile *db, SourceManager &sm, Usr usr, Kind kind, SourceLocation sl) const {
FileID fid = sm.getFileID(sl);
int lid = getFileLID(db, sm, fid);
if (lid < 0)
return;
Range spell = fromTokenRange(sm, ctx->getLangOpts(), SourceRange(sl, sl));
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 : int(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; }
bool handleDeclOccurrence(const Decl *d, index::SymbolRoleSet roles, ArrayRef<index::SymbolRelation> relations,
SourceLocation src_loc, ASTNodeInfo ast_node) override {
if (!param.no_linkage) {
if (auto *nd = dyn_cast<NamedDecl>(d); nd && nd->hasLinkage())
;
else
return true;
}
SourceManager &sm = ctx->getSourceManager();
const LangOptions &lang = ctx->getLangOpts();
FileID fid;
SourceLocation spell = sm.getSpellingLoc(src_loc);
Range loc;
auto r = sm.isMacroArgExpansion(src_loc) ? CharSourceRange::getTokenRange(spell) : sm.getExpansionRange(src_loc);
loc = fromCharSourceRange(sm, lang, r);
fid = sm.getFileID(r.getBegin());
if (fid.isInvalid())
return true;
int lid = -1;
IndexFile *db;
if (g_config->index.multiVersion && param.useMultiVersion(fid)) {
db = param.consumeFile(sm.getMainFileID());
if (!db)
return true;
param.seenFile(fid);
if (!sm.isWrittenInMainFile(r.getBegin()))
lid = getFileLID(db, sm, fid);
} else {
db = param.consumeFile(fid);
if (!db)
return true;
}
// spell, extent, comments use OrigD while most others use adjusted |D|.
const Decl *origD = ast_node.OrigD;
const DeclContext *sem_dc = origD->getDeclContext()->getRedeclContext();
const DeclContext *lex_dc = ast_node.ContainerDC->getRedeclContext();
{
const NamespaceDecl *nd;
while ((nd = dyn_cast<NamespaceDecl>(cast<Decl>(sem_dc))) && nd->isAnonymousNamespace())
sem_dc = nd->getDeclContext()->getRedeclContext();
while ((nd = dyn_cast<NamespaceDecl>(cast<Decl>(lex_dc))) && nd->isAnonymousNamespace())
lex_dc = 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 = SymbolKind::Unknown;
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 (src_loc.isFileID()) {
SourceRange sr = cast<FunctionDecl>(origD)->getNameInfo().getSourceRange();
if (sr.getEnd().isFileID())
loc = fromTokenRange(sm, lang, sr);
}
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 sr = origD->getSourceRange();
entity->def.spell = {use, fromTokenRangeDefaulted(sm, lang, sr, fid, loc)};
entity->def.parent_kind = SymbolKind::File;
getKind(cast<Decl>(sem_dc), entity->def.parent_kind);
} else if (is_decl) {
SourceRange sr = origD->getSourceRange();
entity->declarations.push_back({use, fromTokenRangeDefaulted(sm, lang, sr, fid, 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:
if (ls_kind == SymbolKind::Unknown)
LOG_S(INFO) << "Unhandled " << int(d->getKind()) << " " << info->qualified << " in " << db->path << ":"
<< (loc.start.line + 1) << ":" << (loc.start.column + 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 != src_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>(sem_dc);
if (getKind(dc, ls_kind) == Kind::Type)
db->toType(getUsr(dc)).def.funcs.push_back(usr);
} else {
const Decl *dc = cast<Decl>(lex_dc);
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 != src_loc)
addMacroUse(db, sm, usr, Kind::Type, spell);
if ((is_def || type->def.detailed_name[0] == '\0') && info->short_name.size()) {
if (d->getKind() == Decl::TemplateTypeParm)
type->def.detailed_name = intern(info->short_name);
else
// OrigD may be detailed, e.g. "struct D : B {}"
setName(origD, info->short_name, info->qualified, type->def);
}
if (is_def || is_decl) {
const Decl *dc = cast<Decl>(sem_dc);
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 != src_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>(sem_dc);
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>(sem_dc))
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))) {
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) == fid) {
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::Enum:
case Decl::Record:
if (auto *tag_d = dyn_cast<TagDecl>(d)) {
if (type->def.detailed_name[0] == '\0' && info->short_name.empty()) {
StringRef tag;
switch (tag_d->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 = tag_d->getTypedefNameForAnonDecl()) {
StringRef name = td->getName();
std::string detailed = ("anon " + tag + " " + name).str();
type->def.detailed_name = intern(detailed);
type->def.short_name_size = detailed.size();
} else {
std::string name = ("anon " + tag).str();
type->def.detailed_name = intern(name);
type->def.short_name_size = name.size();
}
}
if (is_def && !isa<EnumDecl>(d))
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();
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:
if (auto *td = dyn_cast<TypedefNameDecl>(d)) {
bool specialization = false;
QualType t = td->getUnderlyingType();
if (const Decl *d1 = getAdjustedDecl(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) == fid)
type1.uses.push_back({{fromTokenRange(sm, lang, {l1, l1}), Role::Reference}, lid});
}
}
}