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//===- ExtractAPI/API.cpp ---------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file implements the APIRecord and derived record structs,
/// and the APISet class.
///
//===----------------------------------------------------------------------===//
#include "clang/ExtractAPI/API.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/ErrorHandling.h"
#include <memory>
using namespace clang::extractapi;
using namespace llvm;
SymbolReference::SymbolReference(const APIRecord *R)
: Name(R->Name), USR(R->USR), Record(R) {}
APIRecord *APIRecord::castFromRecordContext(const RecordContext *Ctx) {
switch (Ctx->getKind()) {
#define RECORD_CONTEXT(CLASS, KIND) \
case KIND: \
return static_cast<CLASS *>(const_cast<RecordContext *>(Ctx));
#include "clang/ExtractAPI/APIRecords.inc"
default:
return nullptr;
// llvm_unreachable("RecordContext derived class isn't propertly
// implemented");
}
}
RecordContext *APIRecord::castToRecordContext(const APIRecord *Record) {
if (!Record)
return nullptr;
switch (Record->getKind()) {
#define RECORD_CONTEXT(CLASS, KIND) \
case KIND: \
return static_cast<CLASS *>(const_cast<APIRecord *>(Record));
#include "clang/ExtractAPI/APIRecords.inc"
default:
return nullptr;
// llvm_unreachable("RecordContext derived class isn't propertly
// implemented");
}
}
bool RecordContext::IsWellFormed() const {
// Check that First and Last are both null or both non-null.
return (First == nullptr) == (Last == nullptr);
}
void RecordContext::stealRecordChain(RecordContext &Other) {
assert(IsWellFormed());
// Other's record chain is empty, nothing to do
if (Other.First == nullptr && Other.Last == nullptr)
return;
// If we don't have an empty chain append Other's chain into ours.
if (First)
Last->NextInContext = Other.First;
else
First = Other.First;
Last = Other.Last;
for (auto *StolenRecord = Other.First; StolenRecord != nullptr;
StolenRecord = StolenRecord->getNextInContext())
StolenRecord->Parent = SymbolReference(cast<APIRecord>(this));
// Delete Other's chain to ensure we don't accidentally traverse it.
Other.First = nullptr;
Other.Last = nullptr;
}
void RecordContext::addToRecordChain(APIRecord *Record) const {
assert(IsWellFormed());
if (!First) {
First = Record;
Last = Record;
return;
}
Last->NextInContext = Record;
Last = Record;
}
void RecordContext::removeFromRecordChain(APIRecord *Record) {
APIRecord *Prev = nullptr;
for (APIRecord *Curr = First; Curr != Record; Curr = Curr->NextInContext)
Prev = Curr;
if (Prev)
Prev->NextInContext = Record->NextInContext;
else
First = Record->NextInContext;
if (Last == Record)
Last = Prev;
Record->NextInContext = nullptr;
}
APIRecord *APISet::findRecordForUSR(StringRef USR) const {
if (USR.empty())
return nullptr;
auto FindIt = USRBasedLookupTable.find(USR);
if (FindIt != USRBasedLookupTable.end())
return FindIt->getSecond().get();
return nullptr;
}
StringRef APISet::copyString(StringRef String) {
if (String.empty())
return {};
// No need to allocate memory and copy if the string has already been stored.
if (Allocator.identifyObject(String.data()))
return String;
void *Ptr = Allocator.Allocate(String.size(), 1);
memcpy(Ptr, String.data(), String.size());
return StringRef(reinterpret_cast<const char *>(Ptr), String.size());
}
SymbolReference APISet::createSymbolReference(StringRef Name, StringRef USR,
StringRef Source) {
return SymbolReference(copyString(Name), copyString(USR), copyString(Source));
}
void APISet::removeRecord(StringRef USR) {
auto Result = USRBasedLookupTable.find(USR);
if (Result != USRBasedLookupTable.end()) {
auto *Record = Result->getSecond().get();
auto &ParentReference = Record->Parent;
auto *ParentRecord = const_cast<APIRecord *>(ParentReference.Record);
if (!ParentRecord)
ParentRecord = findRecordForUSR(ParentReference.USR);
if (auto *ParentCtx = llvm::cast_if_present<RecordContext>(ParentRecord)) {
ParentCtx->removeFromRecordChain(Record);
if (auto *RecordAsCtx = llvm::dyn_cast<RecordContext>(Record))
ParentCtx->stealRecordChain(*RecordAsCtx);
} else {
auto *It = llvm::find(TopLevelRecords, Record);
if (It != TopLevelRecords.end())
TopLevelRecords.erase(It);
if (auto *RecordAsCtx = llvm::dyn_cast<RecordContext>(Record)) {
for (const auto *Child = RecordAsCtx->First; Child != nullptr;
Child = Child->getNextInContext())
TopLevelRecords.push_back(Child);
}
}
USRBasedLookupTable.erase(Result);
}
}
void APISet::removeRecord(APIRecord *Record) { removeRecord(Record->USR); }
APIRecord::~APIRecord() {}
TagRecord::~TagRecord() {}
RecordRecord::~RecordRecord() {}
RecordFieldRecord::~RecordFieldRecord() {}
ObjCContainerRecord::~ObjCContainerRecord() {}
ObjCMethodRecord::~ObjCMethodRecord() {}
ObjCPropertyRecord::~ObjCPropertyRecord() {}
CXXMethodRecord::~CXXMethodRecord() {}
void GlobalFunctionRecord::anchor() {}
void GlobalVariableRecord::anchor() {}
void EnumConstantRecord::anchor() {}
void EnumRecord::anchor() {}
void StructFieldRecord::anchor() {}
void StructRecord::anchor() {}
void UnionFieldRecord::anchor() {}
void UnionRecord::anchor() {}
void CXXFieldRecord::anchor() {}
void CXXClassRecord::anchor() {}
void CXXConstructorRecord::anchor() {}
void CXXDestructorRecord::anchor() {}
void CXXInstanceMethodRecord::anchor() {}
void CXXStaticMethodRecord::anchor() {}
void ObjCInstancePropertyRecord::anchor() {}
void ObjCClassPropertyRecord::anchor() {}
void ObjCInstanceVariableRecord::anchor() {}
void ObjCInstanceMethodRecord::anchor() {}
void ObjCClassMethodRecord::anchor() {}
void ObjCCategoryRecord::anchor() {}
void ObjCInterfaceRecord::anchor() {}
void ObjCProtocolRecord::anchor() {}
void MacroDefinitionRecord::anchor() {}
void TypedefRecord::anchor() {}
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