void UseNodiscardCheck::registerMatchers(MatchFinder *Finder) {
// If we use ``[[nodiscard]]`` attribute, we require at least C++17. Use a
// macro or ``__attribute__`` with pre c++17 compilers by using
// ReplacementString option.
if ((NoDiscardMacro == "[[nodiscard]]" && !getLangOpts().CPlusPlus17) ||
!getLangOpts().CPlusPlus)
return;
auto FunctionObj =
cxxRecordDecl(hasAnyName("::std::function", "::boost::function"));
// Find all non-void const methods which have not already been marked to
// warn on unused result.
Finder->addMatcher(
cxxMethodDecl(
allOf(isConst(), isDefinitionOrInline(),
unless(anyOf(
returns(voidType()), isNoReturn(), isOverloadedOperator(),
isVariadic(), hasTemplateReturnType(),
hasClassMutableFields(), isConversionOperator(),
hasAttr(clang::attr::WarnUnusedResult),
hasType(isInstantiationDependentType()),
hasAnyParameter(anyOf(
parmVarDecl(anyOf(hasType(FunctionObj),
hasType(references(FunctionObj)))),
hasType(isNonConstReferenceOrPointer()),
hasParameterPack()))))))
.bind("no_discard"),
this);
}
void cacheable_function::useLegacyCache(XQueryDiagnostics* aDiag)
{
if (isUpdating() || isVariadic())
{
if (aDiag)
{
aDiag->add_warning(
NEW_XQUERY_WARNING(zwarn::ZWST0005_CACHING_NOT_POSSIBLE,
WARN_PARAMS(getName()->getStringValue(), isUpdating() ? ZED(ZWST0005_UPDATING) : ZED(ZWST0005_VARIADIC)),
WARN_LOC(theLoc)));
}
theHasCache = false;
return;
}
if (isSequential() || !isDeterministic())
{
if (aDiag)
{
aDiag->add_warning(
NEW_XQUERY_WARNING(zwarn::ZWST0006_CACHING_MIGHT_NOT_BE_INTENDED,
WARN_PARAMS(getName()->getStringValue(), (isSequential() ? "sequential" : "non-deterministic")),
WARN_LOC(theLoc)));
}
}
parseCachingAnnotations(aDiag);
theHasCache = true;
theIsCacheAutomatic = false;
theCacheAcrossSnapshots = true;
}
void cacheable_function::useDefaultCachingSettings()
{
if (isVariadic() || isUpdating() || isSequential() || !isDeterministic())
{
theHasCache = false;
}
else
{
if (!haveAtomicArgumentsAndReturnType())
{
theHasCache = false;
}
else
{
theHasCache = true;
theIsCacheAutomatic = true;
theCacheAcrossSnapshots = false;
}
}
}
void cacheable_function::useStrictlyDeterministicCache(XQueryDiagnostics* aDiag)
{
if (isUpdating() || isSequential() || isVariadic())
{
if (aDiag)
{
aDiag->add_warning(
NEW_XQUERY_WARNING(zwarn::ZWST0005_CACHING_NOT_POSSIBLE,
WARN_PARAMS(getName()->getStringValue(),
isUpdating() ? ZED(ZWST0005_UPDATING) :
(isSequential() ? ZED(ZWST0005_SEQUENTIAL) : ZED(ZWST0005_VARIADIC))),
WARN_LOC(theLoc)));
}
theHasCache = false;
}
else
{
parseCachingAnnotations(aDiag);
theHasCache = true;
theIsCacheAutomatic = false;
theCacheAcrossSnapshots = false;
}
}
Func* FuncEmitter::create(Unit& unit, PreClass* preClass /* = NULL */) const {
bool isGenerated = isdigit(name->data()[0]) ||
ParserBase::IsClosureName(name->toCppString());
Attr attrs = this->attrs;
if (preClass && preClass->attrs() & AttrInterface) {
attrs |= AttrAbstract;
}
if (attrs & AttrPersistent &&
((RuntimeOption::EvalJitEnableRenameFunction && !isGenerated) ||
(!RuntimeOption::RepoAuthoritative && SystemLib::s_inited) ||
attrs & AttrInterceptable)) {
if (attrs & AttrBuiltin) {
SystemLib::s_anyNonPersistentBuiltins = true;
}
attrs = Attr(attrs & ~AttrPersistent);
}
if (RuntimeOption::EvalJitEnableRenameFunction &&
!name->empty() &&
!Func::isSpecial(name) &&
!isClosureBody) {
// intercepted functions need to pass all args through
// to the interceptee
attrs |= AttrMayUseVV;
}
if (isVariadic()) { attrs |= AttrVariadicParam; }
if (!containsCalls) { attrs |= AttrPhpLeafFn; }
assert(!m_pce == !preClass);
Func* f = m_ue.newFunc(this, unit, preClass, line1, line2, base,
past, name, attrs, top, docComment,
params.size(), isClosureBody);
f->shared()->m_info = m_info;
f->shared()->m_returnType = returnType;
std::vector<Func::ParamInfo> fParams;
for (unsigned i = 0; i < params.size(); ++i) {
Func::ParamInfo pi = params[i];
f->appendParam(params[i].byRef, pi, fParams);
}
f->shared()->m_localNames.create(m_localNames);
f->shared()->m_numLocals = m_numLocals;
f->shared()->m_numIterators = m_numIterators;
f->m_maxStackCells = maxStackCells;
f->shared()->m_staticVars = staticVars;
f->shared()->m_ehtab = ehtab;
f->shared()->m_fpitab = fpitab;
f->shared()->m_isClosureBody = isClosureBody;
f->shared()->m_isAsync = isAsync;
f->shared()->m_isGenerator = isGenerator;
f->shared()->m_isPairGenerator = isPairGenerator;
f->shared()->m_userAttributes = userAttributes;
f->shared()->m_builtinFuncPtr = m_builtinFuncPtr;
f->shared()->m_nativeFuncPtr = m_nativeFuncPtr;
f->shared()->m_retTypeConstraint = retTypeConstraint;
f->shared()->m_retUserType = retUserType;
f->shared()->m_originalFilename = originalFilename;
f->shared()->m_isGenerated = isGenerated;
f->finishedEmittingParams(fParams);
if (attrs & AttrNative) {
auto nif = Native::GetBuiltinFunction(name,
m_pce ? m_pce->name() : nullptr,
f->isStatic());
if (nif) {
Attr dummy = AttrNone;
int nativeAttrs = parseNativeAttributes(dummy);
if (nativeAttrs & Native::AttrZendCompat) {
f->shared()->m_nativeFuncPtr = nif;
f->shared()->m_builtinFuncPtr = zend_wrap_func;
} else {
if (parseNativeAttributes(dummy) & Native::AttrActRec) {
f->shared()->m_builtinFuncPtr = nif;
f->shared()->m_nativeFuncPtr = nullptr;
} else {
f->shared()->m_nativeFuncPtr = nif;
f->shared()->m_builtinFuncPtr = m_pce ? Native::methodWrapper
: Native::functionWrapper;
}
}
} else {
f->shared()->m_builtinFuncPtr = Native::unimplementedWrapper;
}
}
return f;
}
Func* FuncEmitter::create(Unit& unit, PreClass* preClass /* = NULL */) const {
bool isGenerated = isdigit(name->data()[0]) || needsStripInOut(name);
Attr attrs = this->attrs;
if (preClass && preClass->attrs() & AttrInterface) {
attrs |= AttrAbstract;
}
if (!RuntimeOption::RepoAuthoritative) {
if (RuntimeOption::EvalJitEnableRenameFunction) {
attrs |= AttrInterceptable;
} else {
attrs = Attr(attrs & ~AttrInterceptable);
}
}
if (attrs & AttrPersistent && !preClass) {
if ((RuntimeOption::EvalJitEnableRenameFunction ||
attrs & AttrInterceptable ||
(!RuntimeOption::RepoAuthoritative && SystemLib::s_inited))) {
if (attrs & AttrBuiltin) {
SystemLib::s_anyNonPersistentBuiltins = true;
}
attrs = Attr(attrs & ~AttrPersistent);
}
} else {
assertx(preClass || !(attrs & AttrBuiltin));
}
if (!RuntimeOption::RepoAuthoritative) {
// In non-RepoAuthoritative mode, any function could get a VarEnv because
// of evalPHPDebugger.
attrs |= AttrMayUseVV;
} else if ((attrs & AttrInterceptable) &&
!name->empty() &&
!Func::isSpecial(name) &&
!isClosureBody) {
// intercepted functions need to pass all args through
// to the interceptee
attrs |= AttrMayUseVV;
}
if (isVariadic()) {
attrs |= AttrVariadicParam;
if (isVariadicByRef()) {
attrs |= AttrVariadicByRef;
}
}
assertx(!m_pce == !preClass);
auto f = m_ue.newFunc(this, unit, name, attrs, params.size());
f->m_isPreFunc = !!preClass;
bool const needsExtendedSharedData =
isNative ||
line2 - line1 >= Func::kSmallDeltaLimit ||
past - base >= Func::kSmallDeltaLimit ||
m_numClsRefSlots > 3;
f->m_shared.reset(
needsExtendedSharedData
? new Func::ExtendedSharedData(preClass, base, past, line1, line2,
top, !containsCalls, docComment)
: new Func::SharedData(preClass, base, past,
line1, line2, top, !containsCalls, docComment)
);
f->init(params.size());
if (auto const ex = f->extShared()) {
ex->m_hasExtendedSharedData = true;
ex->m_arFuncPtr = nullptr;
ex->m_nativeFuncPtr = nullptr;
ex->m_line2 = line2;
ex->m_past = past;
ex->m_returnByValue = false;
ex->m_isMemoizeWrapper = false;
ex->m_isMemoizeWrapperLSB = false;
ex->m_actualNumClsRefSlots = m_numClsRefSlots;
}
std::vector<Func::ParamInfo> fParams;
for (unsigned i = 0; i < params.size(); ++i) {
Func::ParamInfo pi = params[i];
if (pi.isVariadic()) {
pi.builtinType = RuntimeOption::EvalHackArrDVArrs
? KindOfVec : KindOfArray;
}
f->appendParam(params[i].byRef, pi, fParams);
}
auto const originalFullName =
(!originalFilename ||
!RuntimeOption::RepoAuthoritative ||
FileUtil::isAbsolutePath(originalFilename->slice())) ?
originalFilename :
makeStaticString(RuntimeOption::SourceRoot +
originalFilename->toCppString());
f->shared()->m_localNames.create(m_localNames);
f->shared()->m_numLocals = m_numLocals;
f->shared()->m_numIterators = m_numIterators;
f->m_maxStackCells = maxStackCells;
f->shared()->m_staticVars = staticVars;
f->shared()->m_ehtab = ehtab;
f->shared()->m_fpitab = fpitab;
f->shared()->m_isClosureBody = isClosureBody;
f->shared()->m_isAsync = isAsync;
f->shared()->m_isGenerator = isGenerator;
f->shared()->m_isPairGenerator = isPairGenerator;
f->shared()->m_userAttributes = userAttributes;
f->shared()->m_retTypeConstraint = retTypeConstraint;
f->shared()->m_retUserType = retUserType;
f->shared()->m_originalFilename = originalFullName;
f->shared()->m_isGenerated = isGenerated;
f->shared()->m_repoReturnType = repoReturnType;
f->shared()->m_repoAwaitedReturnType = repoAwaitedReturnType;
f->shared()->m_isMemoizeWrapper = isMemoizeWrapper;
f->shared()->m_isMemoizeWrapperLSB = isMemoizeWrapperLSB;
f->shared()->m_numClsRefSlots = m_numClsRefSlots;
if (isNative) {
auto const ex = f->extShared();
ex->m_hniReturnType = hniReturnType;
auto const info = getNativeInfo();
Attr dummy = AttrNone;
auto nativeAttributes = parseNativeAttributes(dummy);
Native::getFunctionPointers(
info,
nativeAttributes,
ex->m_arFuncPtr,
ex->m_nativeFuncPtr
);
ex->m_takesNumArgs = !!(nativeAttributes & Native::AttrTakesNumArgs);
if (ex->m_nativeFuncPtr) {
if (info.sig.ret == Native::NativeSig::Type::MixedTV) {
ex->m_returnByValue = true;
}
int extra =
(nativeAttributes & Native::AttrTakesNumArgs ? 1 : 0) +
(isMethod() ? 1 : 0);
assertx(info.sig.args.size() == params.size() + extra);
for (auto i = params.size(); i--; ) {
switch (info.sig.args[extra + i]) {
case Native::NativeSig::Type::ObjectArg:
case Native::NativeSig::Type::StringArg:
case Native::NativeSig::Type::ArrayArg:
case Native::NativeSig::Type::ResourceArg:
case Native::NativeSig::Type::OutputArg:
case Native::NativeSig::Type::MixedTV:
fParams[i].nativeArg = true;
break;
default:
break;
}
}
}
}
f->finishedEmittingParams(fParams);
return f;
}
Func* FuncEmitter::create(Unit& unit, PreClass* preClass /* = NULL */) const {
bool isGenerated = isdigit(name->data()[0]) ||
ParserBase::IsClosureName(name->toCppString());
Attr attrs = this->attrs;
if (preClass && preClass->attrs() & AttrInterface) {
attrs |= AttrAbstract;
}
if (attrs & AttrPersistent &&
((RuntimeOption::EvalJitEnableRenameFunction && !isGenerated) ||
(!RuntimeOption::RepoAuthoritative && SystemLib::s_inited) ||
attrs & AttrInterceptable)) {
if (attrs & AttrBuiltin) {
SystemLib::s_anyNonPersistentBuiltins = true;
}
attrs = Attr(attrs & ~AttrPersistent);
}
if (!RuntimeOption::RepoAuthoritative) {
// In non-RepoAuthoritative mode, any function could get a VarEnv because
// of evalPHPDebugger.
attrs |= AttrMayUseVV;
} else if (RuntimeOption::EvalJitEnableRenameFunction &&
!name->empty() &&
!Func::isSpecial(name) &&
!isClosureBody) {
// intercepted functions need to pass all args through
// to the interceptee
attrs |= AttrMayUseVV;
}
if (isVariadic()) { attrs |= AttrVariadicParam; }
if (!containsCalls) { attrs |= AttrPhpLeafFn; }
assert(!m_pce == !preClass);
auto f = m_ue.newFunc(this, unit, name, attrs, params.size());
f->m_isPreFunc = !!preClass;
bool const needsExtendedSharedData =
m_info ||
m_builtinFuncPtr ||
m_nativeFuncPtr ||
(attrs & AttrNative) ||
line2 - line1 >= Func::kSmallDeltaLimit ||
past - base >= Func::kSmallDeltaLimit;
f->m_shared.reset(
needsExtendedSharedData
? new Func::ExtendedSharedData(preClass, base, past, line1, line2,
top, docComment)
: new Func::SharedData(preClass, base, past,
line1, line2, top, docComment)
);
f->init(params.size());
if (auto const ex = f->extShared()) {
ex->m_hasExtendedSharedData = true;
ex->m_builtinFuncPtr = m_builtinFuncPtr;
ex->m_nativeFuncPtr = m_nativeFuncPtr;
ex->m_info = m_info;
ex->m_line2 = line2;
ex->m_past = past;
ex->m_returnByValue = false;
}
std::vector<Func::ParamInfo> fParams;
for (unsigned i = 0; i < params.size(); ++i) {
Func::ParamInfo pi = params[i];
if (pi.isVariadic()) {
pi.builtinType = KindOfArray;
}
f->appendParam(params[i].byRef, pi, fParams);
}
f->shared()->m_returnType = returnType;
f->shared()->m_localNames.create(m_localNames);
f->shared()->m_numLocals = m_numLocals;
f->shared()->m_numIterators = m_numIterators;
f->m_maxStackCells = maxStackCells;
f->shared()->m_staticVars = staticVars;
f->shared()->m_ehtab = toFixed(ehtab);
f->shared()->m_fpitab = fpitab;
f->shared()->m_isClosureBody = isClosureBody;
f->shared()->m_isAsync = isAsync;
f->shared()->m_isGenerator = isGenerator;
f->shared()->m_isPairGenerator = isPairGenerator;
f->shared()->m_userAttributes = userAttributes;
f->shared()->m_retTypeConstraint = retTypeConstraint;
f->shared()->m_retUserType = retUserType;
f->shared()->m_originalFilename = originalFilename;
f->shared()->m_isGenerated = isGenerated;
if (attrs & AttrNative) {
auto const ex = f->extShared();
auto const& info = Native::GetBuiltinFunction(
name,
m_pce ? m_pce->name() : nullptr,
f->isStatic()
);
Attr dummy = AttrNone;
auto nativeAttributes = parseNativeAttributes(dummy);
Native::getFunctionPointers(
info,
nativeAttributes,
ex->m_builtinFuncPtr,
ex->m_nativeFuncPtr
);
if (ex->m_nativeFuncPtr &&
!(nativeAttributes & Native::AttrZendCompat)) {
if (info.sig.ret == Native::NativeSig::Type::MixedTV) {
ex->m_returnByValue = true;
}
int extra =
(attrs & AttrNumArgs ? 1 : 0) +
(isMethod() ? 1 : 0);
assert(info.sig.args.size() == params.size() + extra);
for (auto i = params.size(); i--; ) {
switch (info.sig.args[extra + i]) {
case Native::NativeSig::Type::ObjectArg:
case Native::NativeSig::Type::StringArg:
case Native::NativeSig::Type::ArrayArg:
case Native::NativeSig::Type::ResourceArg:
case Native::NativeSig::Type::OutputArg:
case Native::NativeSig::Type::MixedTV:
fParams[i].nativeArg = true;
break;
default:
break;
}
}
}
}
f->finishedEmittingParams(fParams);
return f;
}
ir::Type* TypeParser::_parseType()
{
std::string nextToken = _lexer->peek();
ir::Type* type = nullptr;
if(isFunction(nextToken))
{
type = _parseFunction();
}
else if(isStructure(nextToken))
{
type = _parseStructure();
}
else if(isPrimitive(_compiler, nextToken))
{
type = _parsePrimitive();
nextToken = _lexer->peek();
if(isFunction(nextToken))
{
type = _parseFunction(type);
}
}
else if(isArray(nextToken))
{
type = _parseArray();
}
else if(isVariadic(nextToken))
{
_lexer->scan("...");
type = *_compiler->getOrInsertType(ir::VariadicType(_compiler));
}
else if(isTypeAlias(nextToken))
{
type = _parseTypeAlias();
}
else if(isOpaqueType(nextToken))
{
_lexer->scan("opaque");
type = *_compiler->getOrInsertType(ir::OpaqueType(_compiler));
}
nextToken = _lexer->peek();
while(isPointer(nextToken))
{
_lexer->scan("*");
type = *_compiler->getOrInsertType(ir::PointerType(_compiler, type));
nextToken = _lexer->peek();
}
if(type == nullptr)
{
throw std::runtime_error("Failed to parse type.");
}
hydrazine::log("TypeParser::Parser") << "Parsed type " << type->name
<< ".\n";
return type;
}
Func* FuncEmitter::create(Unit& unit, PreClass* preClass /* = NULL */) const {
bool isGenerated = isdigit(name->data()[0]) ||
ParserBase::IsClosureName(name->toCppString());
Attr attrs = this->attrs;
if (preClass && preClass->attrs() & AttrInterface) {
attrs |= AttrAbstract;
}
if (attrs & AttrPersistent &&
((RuntimeOption::EvalJitEnableRenameFunction && !isGenerated) ||
(!RuntimeOption::RepoAuthoritative && SystemLib::s_inited) ||
attrs & AttrInterceptable)) {
if (attrs & AttrBuiltin) {
SystemLib::s_anyNonPersistentBuiltins = true;
}
attrs = Attr(attrs & ~AttrPersistent);
}
if (!RuntimeOption::RepoAuthoritative) {
// In non-RepoAuthoritative mode, any function could get a VarEnv because
// of evalPHPDebugger.
attrs |= AttrMayUseVV;
} else if (RuntimeOption::EvalJitEnableRenameFunction &&
!name->empty() &&
!Func::isSpecial(name) &&
!isClosureBody) {
// intercepted functions need to pass all args through
// to the interceptee
attrs |= AttrMayUseVV;
}
if (isVariadic()) { attrs |= AttrVariadicParam; }
if (!containsCalls) { attrs |= AttrPhpLeafFn; }
assert(!m_pce == !preClass);
auto f = m_ue.newFunc(this, unit, name, attrs, params.size());
f->m_isPreFunc = !!preClass;
bool const needsExtendedSharedData =
m_info ||
m_builtinFuncPtr ||
m_nativeFuncPtr ||
(attrs & AttrNative) ||
line2 - line1 >= Func::kSmallDeltaLimit ||
past - base >= Func::kSmallDeltaLimit;
f->m_shared.reset(
needsExtendedSharedData
? new Func::ExtendedSharedData(preClass, base, past, line1, line2,
top, docComment)
: new Func::SharedData(preClass, base, past,
line1, line2, top, docComment)
);
f->init(params.size());
if (auto const ex = f->extShared()) {
ex->m_hasExtendedSharedData = true;
ex->m_builtinFuncPtr = m_builtinFuncPtr;
ex->m_nativeFuncPtr = m_nativeFuncPtr;
ex->m_info = m_info;
ex->m_line2 = line2;
ex->m_past = past;
}
std::vector<Func::ParamInfo> fParams;
bool usesDoubles = false, variadic = false;
for (unsigned i = 0; i < params.size(); ++i) {
Func::ParamInfo pi = params[i];
if (pi.builtinType == KindOfDouble) usesDoubles = true;
if (pi.isVariadic()) variadic = true;
f->appendParam(params[i].byRef, pi, fParams);
}
f->shared()->m_returnType = returnType;
f->shared()->m_localNames.create(m_localNames);
f->shared()->m_numLocals = m_numLocals;
f->shared()->m_numIterators = m_numIterators;
f->m_maxStackCells = maxStackCells;
f->shared()->m_staticVars = staticVars;
f->shared()->m_ehtab = toFixed(ehtab);
f->shared()->m_fpitab = fpitab;
f->shared()->m_isClosureBody = isClosureBody;
f->shared()->m_isAsync = isAsync;
f->shared()->m_isGenerator = isGenerator;
f->shared()->m_isPairGenerator = isPairGenerator;
f->shared()->m_userAttributes = userAttributes;
f->shared()->m_retTypeConstraint = retTypeConstraint;
f->shared()->m_retUserType = retUserType;
f->shared()->m_originalFilename = originalFilename;
f->shared()->m_isGenerated = isGenerated;
f->finishedEmittingParams(fParams);
if (attrs & AttrNative) {
auto const ex = f->extShared();
auto const& info = Native::GetBuiltinFunction(
name,
m_pce ? m_pce->name() : nullptr,
f->isStatic()
);
auto const nif = info.ptr;
if (nif) {
Attr dummy = AttrNone;
int nativeAttrs = parseNativeAttributes(dummy);
if (nativeAttrs & Native::AttrZendCompat) {
ex->m_nativeFuncPtr = nif;
ex->m_builtinFuncPtr = zend_wrap_func;
} else {
if (parseNativeAttributes(dummy) & Native::AttrActRec) {
ex->m_builtinFuncPtr = nif;
ex->m_nativeFuncPtr = nullptr;
} else {
ex->m_nativeFuncPtr = nif;
ex->m_builtinFuncPtr =
Native::getWrapper(m_pce, usesDoubles, variadic);
}
}
} else {
ex->m_builtinFuncPtr = Native::unimplementedWrapper;
}
}
return f;
}
