#include "clang/Basic/DiagnosticIDs.h"
#include "clang/Basic/AllDiagnostics.h"
#include "clang/Basic/DiagnosticCategories.h"
#include "clang/Basic/SourceManager.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/ErrorHandling.h"
#include <map>
using namespace clang;
namespace {
enum {
CLASS_NOTE = 0x01,
CLASS_REMARK = 0x02,
CLASS_WARNING = 0x03,
CLASS_EXTENSION = 0x04,
CLASS_ERROR = 0x05
};
struct StaticDiagInfoRec {
uint16_t DiagID;
unsigned DefaultSeverity : 3;
unsigned Class : 3;
unsigned SFINAE : 2;
unsigned WarnNoWerror : 1;
unsigned WarnShowInSystemHeader : 1;
unsigned Category : 5;
uint16_t OptionGroupIndex;
uint16_t DescriptionLen;
const char *DescriptionStr;
unsigned getOptionGroupIndex() const {
return OptionGroupIndex;
}
StringRef getDescription() const {
return StringRef(DescriptionStr, DescriptionLen);
}
diag::Flavor getFlavor() const {
return Class == CLASS_REMARK ? diag::Flavor::Remark
: diag::Flavor::WarningOrError;
}
bool operator<(const StaticDiagInfoRec &RHS) const {
return DiagID < RHS.DiagID;
}
};
}
static const StaticDiagInfoRec StaticDiagInfo[] = {
#define DIAG(ENUM, CLASS, DEFAULT_SEVERITY, DESC, GROUP, SFINAE, NOWERROR, \
SHOWINSYSHEADER, CATEGORY) \
{ \
diag::ENUM, DEFAULT_SEVERITY, CLASS, DiagnosticIDs::SFINAE, NOWERROR, \
SHOWINSYSHEADER, CATEGORY, GROUP, STR_SIZE(DESC, uint16_t), DESC \
} \
,
#include "clang/Basic/DiagnosticCommonKinds.inc"
#include "clang/Basic/DiagnosticDriverKinds.inc"
#include "clang/Basic/DiagnosticFrontendKinds.inc"
#include "clang/Basic/DiagnosticSerializationKinds.inc"
#include "clang/Basic/DiagnosticLexKinds.inc"
#include "clang/Basic/DiagnosticParseKinds.inc"
#include "clang/Basic/DiagnosticASTKinds.inc"
#include "clang/Basic/DiagnosticCommentKinds.inc"
#include "clang/Basic/DiagnosticSemaKinds.inc"
#include "clang/Basic/DiagnosticAnalysisKinds.inc"
#undef DIAG
};
static const unsigned StaticDiagInfoSize = llvm::array_lengthof(StaticDiagInfo);
static const StaticDiagInfoRec *GetDiagInfo(unsigned DiagID) {
#ifndef NDEBUG
static bool IsFirst = true; if (IsFirst) {
assert(std::is_sorted(std::begin(StaticDiagInfo),
std::end(StaticDiagInfo)) &&
"Diag ID conflict, the enums at the start of clang::diag (in "
"DiagnosticIDs.h) probably need to be increased");
IsFirst = false;
}
#endif
using namespace diag;
if (DiagID >= DIAG_UPPER_LIMIT || DiagID <= DIAG_START_COMMON)
return nullptr;
unsigned Offset = 0;
unsigned ID = DiagID - DIAG_START_COMMON - 1;
#define CATEGORY(NAME, PREV) \
if (DiagID > DIAG_START_##NAME) { \
Offset += NUM_BUILTIN_##PREV##_DIAGNOSTICS - DIAG_START_##PREV - 1; \
ID -= DIAG_START_##NAME - DIAG_START_##PREV; \
}
CATEGORY(DRIVER, COMMON)
CATEGORY(FRONTEND, DRIVER)
CATEGORY(SERIALIZATION, FRONTEND)
CATEGORY(LEX, SERIALIZATION)
CATEGORY(PARSE, LEX)
CATEGORY(AST, PARSE)
CATEGORY(COMMENT, AST)
CATEGORY(SEMA, COMMENT)
CATEGORY(ANALYSIS, SEMA)
#undef CATEGORY
if (ID + Offset >= StaticDiagInfoSize)
return nullptr;
assert(ID < StaticDiagInfoSize && Offset < StaticDiagInfoSize);
const StaticDiagInfoRec *Found = &StaticDiagInfo[ID + Offset];
if (Found->DiagID != DiagID)
return nullptr;
return Found;
}
static DiagnosticMapping GetDefaultDiagMapping(unsigned DiagID) {
DiagnosticMapping Info = DiagnosticMapping::Make(
diag::Severity::Fatal, false, false);
if (const StaticDiagInfoRec *StaticInfo = GetDiagInfo(DiagID)) {
Info.setSeverity((diag::Severity)StaticInfo->DefaultSeverity);
if (StaticInfo->WarnNoWerror) {
assert(Info.getSeverity() == diag::Severity::Warning &&
"Unexpected mapping with no-Werror bit!");
Info.setNoWarningAsError(true);
}
}
return Info;
}
unsigned DiagnosticIDs::getCategoryNumberForDiag(unsigned DiagID) {
if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
return Info->Category;
return 0;
}
namespace {
struct StaticDiagCategoryRec {
const char *NameStr;
uint8_t NameLen;
StringRef getName() const {
return StringRef(NameStr, NameLen);
}
};
}
DiagnosticMapping &
DiagnosticsEngine::DiagState::getOrAddMapping(diag::kind Diag) {
std::pair<iterator, bool> Result =
DiagMap.insert(std::make_pair(Diag, DiagnosticMapping()));
if (Result.second)
Result.first->second = GetDefaultDiagMapping(Diag);
return Result.first->second;
}
static const StaticDiagCategoryRec CategoryNameTable[] = {
#define GET_CATEGORY_TABLE
#define CATEGORY(X, ENUM) { X, STR_SIZE(X, uint8_t) },
#include "clang/Basic/DiagnosticGroups.inc"
#undef GET_CATEGORY_TABLE
{ nullptr, 0 }
};
unsigned DiagnosticIDs::getNumberOfCategories() {
return llvm::array_lengthof(CategoryNameTable) - 1;
}
StringRef DiagnosticIDs::getCategoryNameFromID(unsigned CategoryID) {
if (CategoryID >= getNumberOfCategories())
return StringRef();
return CategoryNameTable[CategoryID].getName();
}
DiagnosticIDs::SFINAEResponse
DiagnosticIDs::getDiagnosticSFINAEResponse(unsigned DiagID) {
if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
return static_cast<DiagnosticIDs::SFINAEResponse>(Info->SFINAE);
return SFINAE_Report;
}
static unsigned getBuiltinDiagClass(unsigned DiagID) {
if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
return Info->Class;
return ~0U;
}
namespace clang {
namespace diag {
class CustomDiagInfo {
typedef std::pair<DiagnosticIDs::Level, std::string> DiagDesc;
std::vector<DiagDesc> DiagInfo;
std::map<DiagDesc, unsigned> DiagIDs;
public:
StringRef getDescription(unsigned DiagID) const {
assert(DiagID - DIAG_UPPER_LIMIT < DiagInfo.size() &&
"Invalid diagnostic ID");
return DiagInfo[DiagID-DIAG_UPPER_LIMIT].second;
}
DiagnosticIDs::Level getLevel(unsigned DiagID) const {
assert(DiagID - DIAG_UPPER_LIMIT < DiagInfo.size() &&
"Invalid diagnostic ID");
return DiagInfo[DiagID-DIAG_UPPER_LIMIT].first;
}
unsigned getOrCreateDiagID(DiagnosticIDs::Level L, StringRef Message,
DiagnosticIDs &Diags) {
DiagDesc D(L, Message);
std::map<DiagDesc, unsigned>::iterator I = DiagIDs.lower_bound(D);
if (I != DiagIDs.end() && I->first == D)
return I->second;
unsigned ID = DiagInfo.size()+DIAG_UPPER_LIMIT;
DiagIDs.insert(std::make_pair(D, ID));
DiagInfo.push_back(D);
return ID;
}
};
} }
DiagnosticIDs::DiagnosticIDs() { CustomDiagInfo = nullptr; }
DiagnosticIDs::~DiagnosticIDs() {
delete CustomDiagInfo;
}
unsigned DiagnosticIDs::getCustomDiagID(Level L, StringRef FormatString) {
if (!CustomDiagInfo)
CustomDiagInfo = new diag::CustomDiagInfo();
return CustomDiagInfo->getOrCreateDiagID(L, FormatString, *this);
}
bool DiagnosticIDs::isBuiltinWarningOrExtension(unsigned DiagID) {
return DiagID < diag::DIAG_UPPER_LIMIT &&
getBuiltinDiagClass(DiagID) != CLASS_ERROR;
}
bool DiagnosticIDs::isBuiltinNote(unsigned DiagID) {
return DiagID < diag::DIAG_UPPER_LIMIT &&
getBuiltinDiagClass(DiagID) == CLASS_NOTE;
}
bool DiagnosticIDs::isBuiltinExtensionDiag(unsigned DiagID,
bool &EnabledByDefault) {
if (DiagID >= diag::DIAG_UPPER_LIMIT ||
getBuiltinDiagClass(DiagID) != CLASS_EXTENSION)
return false;
EnabledByDefault =
GetDefaultDiagMapping(DiagID).getSeverity() != diag::Severity::Ignored;
return true;
}
bool DiagnosticIDs::isDefaultMappingAsError(unsigned DiagID) {
if (DiagID >= diag::DIAG_UPPER_LIMIT)
return false;
return GetDefaultDiagMapping(DiagID).getSeverity() >= diag::Severity::Error;
}
StringRef DiagnosticIDs::getDescription(unsigned DiagID) const {
if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
return Info->getDescription();
assert(CustomDiagInfo && "Invalid CustomDiagInfo");
return CustomDiagInfo->getDescription(DiagID);
}
static DiagnosticIDs::Level toLevel(diag::Severity SV) {
switch (SV) {
case diag::Severity::Ignored:
return DiagnosticIDs::Ignored;
case diag::Severity::Remark:
return DiagnosticIDs::Remark;
case diag::Severity::Warning:
return DiagnosticIDs::Warning;
case diag::Severity::Error:
return DiagnosticIDs::Error;
case diag::Severity::Fatal:
return DiagnosticIDs::Fatal;
}
llvm_unreachable("unexpected severity");
}
DiagnosticIDs::Level
DiagnosticIDs::getDiagnosticLevel(unsigned DiagID, SourceLocation Loc,
const DiagnosticsEngine &Diag) const {
if (DiagID >= diag::DIAG_UPPER_LIMIT) {
assert(CustomDiagInfo && "Invalid CustomDiagInfo");
return CustomDiagInfo->getLevel(DiagID);
}
unsigned DiagClass = getBuiltinDiagClass(DiagID);
if (DiagClass == CLASS_NOTE) return DiagnosticIDs::Note;
return toLevel(getDiagnosticSeverity(DiagID, Loc, Diag));
}
diag::Severity
DiagnosticIDs::getDiagnosticSeverity(unsigned DiagID, SourceLocation Loc,
const DiagnosticsEngine &Diag) const {
assert(getBuiltinDiagClass(DiagID) != CLASS_NOTE);
diag::Severity Result = diag::Severity::Fatal;
DiagnosticsEngine::DiagStatePointsTy::iterator
Pos = Diag.GetDiagStatePointForLoc(Loc);
DiagnosticsEngine::DiagState *State = Pos->State;
DiagnosticMapping &Mapping = State->getOrAddMapping((diag::kind)DiagID);
if (Mapping.getSeverity() != diag::Severity())
Result = Mapping.getSeverity();
if (Diag.EnableAllWarnings && Result == diag::Severity::Ignored &&
!Mapping.isUser() && getBuiltinDiagClass(DiagID) != CLASS_REMARK)
Result = diag::Severity::Warning;
bool EnabledByDefault = false;
bool IsExtensionDiag = isBuiltinExtensionDiag(DiagID, EnabledByDefault);
if (Diag.AllExtensionsSilenced && IsExtensionDiag && !EnabledByDefault)
return diag::Severity::Ignored;
if (IsExtensionDiag && !Mapping.isUser())
Result = std::max(Result, Diag.ExtBehavior);
if (Result == diag::Severity::Ignored)
return Result;
if (Result == diag::Severity::Warning && Diag.IgnoreAllWarnings)
return diag::Severity::Ignored;
if (Result == diag::Severity::Warning) {
if (Diag.WarningsAsErrors && !Mapping.hasNoWarningAsError())
Result = diag::Severity::Error;
}
if (Result == diag::Severity::Error) {
if (Diag.ErrorsAsFatal && !Mapping.hasNoErrorAsFatal())
Result = diag::Severity::Fatal;
}
if (Result == diag::Severity::Fatal) {
if (Diag.FatalsAsError)
Result = diag::Severity::Error;
}
bool ShowInSystemHeader =
!GetDiagInfo(DiagID) || GetDiagInfo(DiagID)->WarnShowInSystemHeader;
if (Diag.SuppressSystemWarnings && !ShowInSystemHeader && Loc.isValid() &&
Diag.getSourceManager().isInSystemHeader(
Diag.getSourceManager().getExpansionLoc(Loc)))
return diag::Severity::Ignored;
return Result;
}
#define GET_DIAG_ARRAYS
#include "clang/Basic/DiagnosticGroups.inc"
#undef GET_DIAG_ARRAYS
namespace {
struct WarningOption {
uint16_t NameOffset;
uint16_t Members;
uint16_t SubGroups;
StringRef getName() const {
return StringRef(DiagGroupNames + NameOffset + 1,
DiagGroupNames[NameOffset]);
}
};
}
static const WarningOption OptionTable[] = {
#define GET_DIAG_TABLE
#include "clang/Basic/DiagnosticGroups.inc"
#undef GET_DIAG_TABLE
};
StringRef DiagnosticIDs::getWarningOptionForDiag(unsigned DiagID) {
if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
return OptionTable[Info->getOptionGroupIndex()].getName();
return StringRef();
}
static bool getDiagnosticsInGroup(diag::Flavor Flavor,
const WarningOption *Group,
SmallVectorImpl<diag::kind> &Diags) {
if (!Group->Members && !Group->SubGroups)
return Flavor == diag::Flavor::Remark;
bool NotFound = true;
const int16_t *Member = DiagArrays + Group->Members;
for (; *Member != -1; ++Member) {
if (GetDiagInfo(*Member)->getFlavor() == Flavor) {
NotFound = false;
Diags.push_back(*Member);
}
}
const int16_t *SubGroups = DiagSubGroups + Group->SubGroups;
for (; *SubGroups != (int16_t)-1; ++SubGroups)
NotFound &= getDiagnosticsInGroup(Flavor, &OptionTable[(short)*SubGroups],
Diags);
return NotFound;
}
bool
DiagnosticIDs::getDiagnosticsInGroup(diag::Flavor Flavor, StringRef Group,
SmallVectorImpl<diag::kind> &Diags) const {
auto Found = std::lower_bound(std::begin(OptionTable), std::end(OptionTable),
Group,
[](const WarningOption &LHS, StringRef RHS) {
return LHS.getName() < RHS;
});
if (Found == std::end(OptionTable) || Found->getName() != Group)
return true;
return ::getDiagnosticsInGroup(Flavor, Found, Diags);
}
void DiagnosticIDs::getAllDiagnostics(diag::Flavor Flavor,
SmallVectorImpl<diag::kind> &Diags) const {
for (unsigned i = 0; i != StaticDiagInfoSize; ++i)
if (StaticDiagInfo[i].getFlavor() == Flavor)
Diags.push_back(StaticDiagInfo[i].DiagID);
}
StringRef DiagnosticIDs::getNearestOption(diag::Flavor Flavor,
StringRef Group) {
StringRef Best;
unsigned BestDistance = Group.size() + 1; for (const WarningOption &O : OptionTable) {
if (!O.Members && !O.SubGroups)
continue;
unsigned Distance = O.getName().edit_distance(Group, true, BestDistance);
if (Distance > BestDistance)
continue;
llvm::SmallVector<diag::kind, 8> Diags;
if (::getDiagnosticsInGroup(Flavor, &O, Diags) || Diags.empty())
continue;
if (Distance == BestDistance) {
Best = "";
} else if (Distance < BestDistance) {
Best = O.getName();
BestDistance = Distance;
}
}
return Best;
}
bool DiagnosticIDs::ProcessDiag(DiagnosticsEngine &Diag) const {
Diagnostic Info(&Diag);
assert(Diag.getClient() && "DiagnosticClient not set!");
unsigned DiagID = Info.getID();
DiagnosticIDs::Level DiagLevel
= getDiagnosticLevel(DiagID, Info.getLocation(), Diag);
if (DiagLevel >= DiagnosticIDs::Error) {
++Diag.TrapNumErrorsOccurred;
if (isUnrecoverable(DiagID))
++Diag.TrapNumUnrecoverableErrorsOccurred;
}
if (Diag.SuppressAllDiagnostics)
return false;
if (DiagLevel != DiagnosticIDs::Note) {
if (Diag.LastDiagLevel == DiagnosticIDs::Fatal)
Diag.FatalErrorOccurred = true;
Diag.LastDiagLevel = DiagLevel;
}
if (Diag.FatalErrorOccurred) {
if (DiagLevel >= DiagnosticIDs::Error &&
Diag.Client->IncludeInDiagnosticCounts()) {
++Diag.NumErrors;
}
return false;
}
if (DiagLevel == DiagnosticIDs::Ignored ||
(DiagLevel == DiagnosticIDs::Note &&
Diag.LastDiagLevel == DiagnosticIDs::Ignored))
return false;
if (DiagLevel >= DiagnosticIDs::Error) {
if (isUnrecoverable(DiagID))
Diag.UnrecoverableErrorOccurred = true;
if (isDefaultMappingAsError(DiagID))
Diag.UncompilableErrorOccurred = true;
Diag.ErrorOccurred = true;
if (Diag.Client->IncludeInDiagnosticCounts()) {
++Diag.NumErrors;
}
if (Diag.ErrorLimit && Diag.NumErrors > Diag.ErrorLimit &&
DiagLevel == DiagnosticIDs::Error) {
Diag.SetDelayedDiagnostic(diag::fatal_too_many_errors);
return false;
}
}
EmitDiag(Diag, DiagLevel);
return true;
}
void DiagnosticIDs::EmitDiag(DiagnosticsEngine &Diag, Level DiagLevel) const {
Diagnostic Info(&Diag);
assert(DiagLevel != DiagnosticIDs::Ignored && "Cannot emit ignored diagnostics!");
Diag.Client->HandleDiagnostic((DiagnosticsEngine::Level)DiagLevel, Info);
if (Diag.Client->IncludeInDiagnosticCounts()) {
if (DiagLevel == DiagnosticIDs::Warning)
++Diag.NumWarnings;
}
Diag.CurDiagID = ~0U;
}
bool DiagnosticIDs::isUnrecoverable(unsigned DiagID) const {
if (DiagID >= diag::DIAG_UPPER_LIMIT) {
assert(CustomDiagInfo && "Invalid CustomDiagInfo");
return CustomDiagInfo->getLevel(DiagID) >= DiagnosticIDs::Error;
}
if (getBuiltinDiagClass(DiagID) < CLASS_ERROR)
return false;
if (DiagID == diag::err_unavailable ||
DiagID == diag::err_unavailable_message)
return false;
if (isARCDiagnostic(DiagID))
return false;
return true;
}
bool DiagnosticIDs::isARCDiagnostic(unsigned DiagID) {
unsigned cat = getCategoryNumberForDiag(DiagID);
return DiagnosticIDs::getCategoryNameFromID(cat).startswith("ARC ");
}