DeclContext::lookup_result
DeclContext::lookup(DeclarationName Name) {
DeclContext *PrimaryContext = getPrimaryContext();
if (PrimaryContext != this)
return PrimaryContext->lookup(Name);
if (hasExternalVisibleStorage())
LoadVisibleDeclsFromExternalStorage();
/// If there is no lookup data structure, build one now by walking
/// all of the linked DeclContexts (in declaration order!) and
/// inserting their values.
if (!LookupPtr) {
buildLookup(this);
if (!LookupPtr)
return lookup_result(0, 0);
}
StoredDeclsMap *Map = static_cast<StoredDeclsMap*>(LookupPtr);
StoredDeclsMap::iterator Pos = Map->find(Name);
if (Pos == Map->end())
return lookup_result(0, 0);
return Pos->second.getLookupResult(getParentASTContext());
}
void DeclContext::makeDeclVisibleInContextImpl(NamedDecl *D, bool Internal) {
// Find or create the stored declaration map.
// AXEL:
#if AXEL_LOOKUP_CHANGES
bool MustVisitExternalSources = false;
#endif
StoredDeclsMap *Map = LookupPtr.getPointer();
if (!Map) {
ASTContext *C = &getParentASTContext();
Map = CreateStoredDeclsMap(*C);
#ifndef AXEL_LOOKUP_CHANGES
}
// If there is an external AST source, load any declarations it knows about
// with this declaration's name.
// If the lookup table contains an entry about this name it means that we
// have already checked the external source.
if (!Internal)
if (ExternalASTSource *Source = getParentASTContext().getExternalSource())
if (hasExternalVisibleStorage() &&
Map->find(D->getDeclName()) == Map->end())
Source->FindExternalVisibleDeclsByName(this, D->getDeclName());
#else
MustVisitExternalSources = hasExternalVisibleStorage();
} else if (hasExternalVisibleStorage() &&
void DeclContext::makeDeclVisibleInContextImpl(NamedDecl *D, bool Internal) {
// Find or create the stored declaration map.
StoredDeclsMap *Map = LookupPtr.getPointer();
if (!Map) {
ASTContext *C = &getParentASTContext();
Map = CreateStoredDeclsMap(*C);
}
// If there is an external AST source, load any declarations it knows about
// with this declaration's name.
// If the lookup table contains an entry about this name it means that we
// have already checked the external source.
if (!Internal)
if (ExternalASTSource *Source = getParentASTContext().getExternalSource())
if (hasExternalVisibleStorage() &&
Map->find(D->getDeclName()) == Map->end())
Source->FindExternalVisibleDeclsByName(this, D->getDeclName());
// Insert this declaration into the map.
StoredDeclsList &DeclNameEntries = (*Map)[D->getDeclName()];
if (DeclNameEntries.isNull()) {
DeclNameEntries.setOnlyValue(D);
return;
}
if (DeclNameEntries.HandleRedeclaration(D)) {
// This declaration has replaced an existing one for which
// declarationReplaces returns true.
return;
}
// Put this declaration into the appropriate slot.
DeclNameEntries.AddSubsequentDecl(D);
}
void DeclContext::removeDecl(Decl *D) {
assert(D->getLexicalDeclContext() == this &&
"decl being removed from non-lexical context");
assert((D->NextInContextAndBits.getPointer() || D == LastDecl) &&
"decl is not in decls list");
// Remove D from the decl chain. This is O(n) but hopefully rare.
if (D == FirstDecl) {
if (D == LastDecl)
FirstDecl = LastDecl = 0;
else
FirstDecl = D->NextInContextAndBits.getPointer();
} else {
for (Decl *I = FirstDecl; true; I = I->NextInContextAndBits.getPointer()) {
assert(I && "decl not found in linked list");
if (I->NextInContextAndBits.getPointer() == D) {
I->NextInContextAndBits.setPointer(D->NextInContextAndBits.getPointer());
if (D == LastDecl) LastDecl = I;
break;
}
}
}
// Mark that D is no longer in the decl chain.
D->NextInContextAndBits.setPointer(0);
// Remove D from the lookup table if necessary.
if (isa<NamedDecl>(D)) {
NamedDecl *ND = cast<NamedDecl>(D);
// Remove only decls that have a name or registered in the lookup.
if (!ND->getDeclName() || ND->isHidden()) return;
StoredDeclsMap *Map = D->getDeclContext()->getPrimaryContext()->LookupPtr.getPointer();
if (!Map) return;
StoredDeclsMap::iterator Pos = Map->find(ND->getDeclName());
#ifndef NDEBUG
assert(Pos != Map->end() && "no lookup entry for decl");
#endif
if (Pos != Map->end()
&& (Pos->second.getAsVector() || Pos->second.getAsDecl() == ND)
)
Pos->second.remove(ND);
}
}
DeclContext::lookup_result
DeclContext::noload_lookup(DeclarationName Name) {
assert(DeclKind != Decl::LinkageSpec &&
"Should not perform lookups into linkage specs!");
if (!hasExternalVisibleStorage())
return lookup(Name);
DeclContext *PrimaryContext = getPrimaryContext();
if (PrimaryContext != this)
return PrimaryContext->noload_lookup(Name);
StoredDeclsMap *Map = LookupPtr.getPointer();
if (LookupPtr.getInt()) {
// Carefully build the lookup map, without deserializing anything.
SmallVector<DeclContext *, 2> Contexts;
collectAllContexts(Contexts);
for (unsigned I = 0, N = Contexts.size(); I != N; ++I)
buildLookupImpl<&DeclContext::noload_decls_begin,
&DeclContext::noload_decls_end>(Contexts[I]);
// We no longer have any lazy decls.
LookupPtr.setInt(false);
// There may now be names for which we have local decls but are
// missing the external decls. FIXME: Just set the hasExternalDecls
// flag on those names that have external decls.
NeedToReconcileExternalVisibleStorage = true;
Map = LookupPtr.getPointer();
}
if (!Map)
return lookup_result(lookup_iterator(0), lookup_iterator(0));
StoredDeclsMap::iterator I = Map->find(Name);
return I != Map->end()
? I->second.getLookupResult()
: lookup_result(lookup_iterator(0), lookup_iterator(0));
}
void DeclContext::removeDecl(Decl *D) {
assert(D->getLexicalDeclContext() == this &&
"decl being removed from non-lexical context");
assert((D->NextDeclInContext || D == LastDecl) &&
"decl is not in decls list");
// Remove D from the decl chain. This is O(n) but hopefully rare.
if (D == FirstDecl) {
if (D == LastDecl)
FirstDecl = LastDecl = 0;
else
FirstDecl = D->NextDeclInContext;
} else {
for (Decl *I = FirstDecl; true; I = I->NextDeclInContext) {
assert(I && "decl not found in linked list");
if (I->NextDeclInContext == D) {
I->NextDeclInContext = D->NextDeclInContext;
if (D == LastDecl) LastDecl = I;
break;
}
}
}
// Mark that D is no longer in the decl chain.
D->NextDeclInContext = 0;
// Remove D from the lookup table if necessary.
if (isa<NamedDecl>(D)) {
NamedDecl *ND = cast<NamedDecl>(D);
StoredDeclsMap *Map = getPrimaryContext()->LookupPtr;
if (!Map) return;
StoredDeclsMap::iterator Pos = Map->find(ND->getDeclName());
assert(Pos != Map->end() && "no lookup entry for decl");
Pos->second.remove(ND);
}
}
DeclContext::lookup_result
DeclContext::lookup(DeclarationName Name) {
assert(DeclKind != Decl::LinkageSpec &&
"Should not perform lookups into linkage specs!");
DeclContext *PrimaryContext = getPrimaryContext();
if (PrimaryContext != this)
return PrimaryContext->lookup(Name);
if (hasExternalVisibleStorage()) {
StoredDeclsMap *Map = LookupPtr.getPointer();
if (LookupPtr.getInt())
Map = buildLookup();
else if (NeedToReconcileExternalVisibleStorage)
reconcileExternalVisibleStorage();
if (!Map)
Map = CreateStoredDeclsMap(getParentASTContext());
// If a PCH/module has a result for this name, and we have a local
// declaration, we will have imported the PCH/module result when adding the
// local declaration or when reconciling the module.
std::pair<StoredDeclsMap::iterator, bool> R =
Map->insert(std::make_pair(Name, StoredDeclsList()));
if (!R.second)
return R.first->second.getLookupResult();
ExternalASTSource *Source = getParentASTContext().getExternalSource();
if (Source->FindExternalVisibleDeclsByName(this, Name)) {
if (StoredDeclsMap *Map = LookupPtr.getPointer()) {
StoredDeclsMap::iterator I = Map->find(Name);
if (I != Map->end())
return I->second.getLookupResult();
}
}
return lookup_result(lookup_iterator(0), lookup_iterator(0));
}
StoredDeclsMap *Map = LookupPtr.getPointer();
if (LookupPtr.getInt())
Map = buildLookup();
if (!Map)
return lookup_result(lookup_iterator(0), lookup_iterator(0));
StoredDeclsMap::iterator I = Map->find(Name);
if (I == Map->end())
return lookup_result(lookup_iterator(0), lookup_iterator(0));
return I->second.getLookupResult();
}
DeclContext::lookup_result
DeclContext::lookup(DeclarationName Name) {
assert(DeclKind != Decl::LinkageSpec &&
"Should not perform lookups into linkage specs!");
DeclContext *PrimaryContext = getPrimaryContext();
if (PrimaryContext != this)
return PrimaryContext->lookup(Name);
if (hasExternalVisibleStorage()) {
// If a PCH has a result for this name, and we have a local declaration, we
// will have imported the PCH result when adding the local declaration.
// FIXME: For modules, we could have had more declarations added by module
// imoprts since we saw the declaration of the local name.
if (StoredDeclsMap *Map = LookupPtr.getPointer()) {
StoredDeclsMap::iterator I = Map->find(Name);
if (I != Map->end())
return I->second.getLookupResult();
}
ExternalASTSource *Source = getParentASTContext().getExternalSource();
return Source->FindExternalVisibleDeclsByName(this, Name);
}
StoredDeclsMap *Map = LookupPtr.getPointer();
if (LookupPtr.getInt())
Map = buildLookup();
if (!Map)
return lookup_result(lookup_iterator(0), lookup_iterator(0));
StoredDeclsMap::iterator I = Map->find(Name);
if (I == Map->end())
return lookup_result(lookup_iterator(0), lookup_iterator(0));
return I->second.getLookupResult();
}
DeclContext::lookup_result
DeclContext::lookup(IdentifierInfo &Name) {
DeclContext *PrimaryContext = getPrimaryContext();
if (PrimaryContext != this) // FIXME: not needed?
return PrimaryContext->lookup(Name);
#if 0 // FIXME: modules. eventually. resync this part from clang.
if (hasExternalVisibleStorage()) {
// If a PCH has a result for this name, and we have a local declaration, we
// will have imported the PCH result when adding the local declaration.
// FIXME: For modules, we could have had more declarations added by module
// imoprts since we saw the declaration of the local name.
if (StoredDeclsMap *Map = LookupPtr.getPointer()) {
StoredDeclsMap::iterator I = Map->find(&Name);
if (I != Map->end())
return I->second.getLookupResult();
}
ExternalASTSource *Source = getParentASTContext().getExternalSource();
return Source->FindExternalVisibleDeclsByName(this, Name);
}
#endif
StoredDeclsMap *Map = LookupPtr.getPointer();
if (LookupPtr.getInt())
Map = buildLookup();
if (!Map)
return lookup_result(lookup_iterator(0), lookup_iterator(0));
StoredDeclsMap::iterator I = Map->find(&Name);
if (I == Map->end())
return lookup_result(lookup_iterator(0), lookup_iterator(0));
return I->second.getLookupResult();
}
DeclContext::lookup_result
DeclContext::lookup(DeclarationName Name) {
assert(DeclKind != Decl::LinkageSpec &&
"Should not perform lookups into linkage specs!");
DeclContext *PrimaryContext = getPrimaryContext();
if (PrimaryContext != this)
return PrimaryContext->lookup(Name);
#if AXEL_LOOKUP_CHANGES
StoredDeclsMap *Map = LookupPtr.getPointer();
if (LookupPtr.getInt())
Map = buildLookup();
#endif
if (hasExternalVisibleStorage()) {
// If a PCH has a result for this name, and we have a local declaration, we
// will have imported the PCH result when adding the local declaration.
// FIXME: For modules, we could have had more declarations added by module
// imoprts since we saw the declaration of the local name.
#if AXEL_LOOKUP_CHANGES
if (Map) {
#else
if (StoredDeclsMap *Map = LookupPtr.getPointer()) {
#endif
StoredDeclsMap::iterator I = Map->find(Name);
if (I != Map->end())
return I->second.getLookupResult();
}
ExternalASTSource *Source = getParentASTContext().getExternalSource();
return Source->FindExternalVisibleDeclsByName(this, Name);
}
#ifndef AXEL_LOOKUP_CHANGES
StoredDeclsMap *Map = LookupPtr.getPointer();
if (LookupPtr.getInt())
Map = buildLookup();
#endif
if (!Map)
return lookup_result(lookup_iterator(0), lookup_iterator(0));
StoredDeclsMap::iterator I = Map->find(Name);
if (I == Map->end())
return lookup_result(lookup_iterator(0), lookup_iterator(0));
return I->second.getLookupResult();
}
void DeclContext::localUncachedLookup(DeclarationName Name,
llvm::SmallVectorImpl<NamedDecl *> &Results) {
Results.clear();
// If there's no external storage, just perform a normal lookup and copy
// the results.
if (!hasExternalVisibleStorage() && !hasExternalLexicalStorage() && Name) {
lookup_result LookupResults = lookup(Name);
Results.insert(Results.end(), LookupResults.first, LookupResults.second);
return;
}
// If we have a lookup table, check there first. Maybe we'll get lucky.
if (Name) {
if (StoredDeclsMap *Map = LookupPtr.getPointer()) {
StoredDeclsMap::iterator Pos = Map->find(Name);
if (Pos != Map->end()) {
Results.insert(Results.end(),
Pos->second.getLookupResult().first,
Pos->second.getLookupResult().second);
return;
}
}
}
// Slow case: grovel through the declarations in our chain looking for
// matches.
for (Decl *D = FirstDecl; D; D = D->getNextDeclInContext()) {
if (NamedDecl *ND = dyn_cast<NamedDecl>(D))
if (ND->getDeclName() == Name)
Results.push_back(ND);
}
}
