SSATmp* implInstanceOfD(IRGS& env, SSATmp* src, const StringData* className) {
/*
* InstanceOfD is always false if it's not an object.
*
* We're prepared to generate translations for known non-object types, but if
* it's Gen/Cell we're going to PUNT because it's natural to translate that
* case with control flow TODO(#2020251)
*/
if (TObj < src->type()) {
PUNT(InstanceOfD_MaybeObj);
}
if (!src->isA(TObj)) {
bool res = ((src->isA(TArr) && interface_supports_array(className))) ||
(src->isA(TStr) && interface_supports_string(className)) ||
(src->isA(TInt) && interface_supports_int(className)) ||
(src->isA(TDbl) && interface_supports_double(className));
return cns(env, res);
}
auto const checkCls = ldClassSafe(env, className);
if (auto isInstance = implInstanceCheck(env, src, className, checkCls)) {
return isInstance;
}
return gen(env, InstanceOf, gen(env, LdObjClass, src), checkCls);
}
bool
TypeConstraint::check(const TypedValue* tv, const Func* func) const {
assert(hasConstraint());
// This is part of the interpreter runtime; perf matters.
if (tv->m_type == KindOfRef) {
tv = tv->m_data.pref->tv();
}
if (nullable() && IS_NULL_TYPE(tv->m_type)) return true;
if (tv->m_type == KindOfObject) {
if (!isObjectOrTypedef()) return false;
// Perfect match seems common enough to be worth skipping the hash
// table lookup.
if (m_typeName->isame(tv->m_data.pobj->getVMClass()->name())) {
if (shouldProfile()) Class::profileInstanceOf(m_typeName);
return true;
}
const Class *c = nullptr;
const bool selfOrParentOrCallable = isSelf() || isParent() || isCallable();
if (selfOrParentOrCallable) {
if (isSelf()) {
selfToClass(func, &c);
} else if (isParent()) {
parentToClass(func, &c);
} else {
assert(isCallable());
return f_is_callable(tvAsCVarRef(tv));
}
} else {
// We can't save the Class* since it moves around from request
// to request.
assert(m_namedEntity);
c = Unit::lookupClass(m_namedEntity);
}
if (shouldProfile() && c) {
Class::profileInstanceOf(c->preClass()->name());
}
if (c && tv->m_data.pobj->instanceof(c)) {
return true;
}
return !selfOrParentOrCallable && checkTypedefObj(tv);
}
if (isObjectOrTypedef()) {
switch (tv->m_type) {
case KindOfArray:
if (interface_supports_array(m_typeName)) {
return true;
}
break;
case KindOfString:
case KindOfStaticString:
if (interface_supports_string(m_typeName)) {
return true;
}
break;
case KindOfInt64:
if (interface_supports_int(m_typeName)) {
return true;
}
break;
case KindOfDouble:
if (interface_supports_double(m_typeName)) {
return true;
}
break;
default:
break;
}
if (isCallable()) {
return f_is_callable(tvAsCVarRef(tv));
}
return isPrecise() && checkTypedefNonObj(tv);
}
return equivDataTypes(m_type.m_dt, tv->m_type);
}
bool TypeConstraint::check(TypedValue* tv, const Func* func) const {
assert(hasConstraint());
// This is part of the interpreter runtime; perf matters.
if (tv->m_type == KindOfRef) {
tv = tv->m_data.pref->tv();
}
if (isNullable() && tv->m_type == KindOfNull) return true;
if (isNumber()) {
return IS_INT_TYPE(tv->m_type) || IS_DOUBLE_TYPE(tv->m_type);
}
if (isArrayKey()) {
return IS_INT_TYPE(tv->m_type) || IS_STRING_TYPE(tv->m_type);
}
if (tv->m_type == KindOfObject) {
if (!isObjectOrTypeAlias()) return false;
// Perfect match seems common enough to be worth skipping the hash
// table lookup.
if (m_typeName->isame(tv->m_data.pobj->getVMClass()->name())) {
if (isProfileRequest()) InstanceBits::profile(m_typeName);
return true;
}
const Class *c = nullptr;
const bool selfOrParentOrCallable = isSelf() || isParent() || isCallable();
if (selfOrParentOrCallable) {
if (isSelf()) {
selfToClass(func, &c);
} else if (isParent()) {
parentToClass(func, &c);
} else {
assert(isCallable());
return HHVM_FN(is_callable)(tvAsCVarRef(tv));
}
} else {
// We can't save the Class* since it moves around from request
// to request.
assert(m_namedEntity);
c = Unit::lookupClass(m_namedEntity);
}
if (isProfileRequest() && c) {
InstanceBits::profile(c->preClass()->name());
}
if (c && tv->m_data.pobj->instanceof(c)) {
return true;
}
return !selfOrParentOrCallable && checkTypeAliasObj(tv);
}
if (isObjectOrTypeAlias()) {
do {
switch (tv->m_type) {
case KindOfInt64:
if (interface_supports_int(m_typeName)) {
return true;
}
continue;
case KindOfDouble:
if (interface_supports_double(m_typeName)) {
return true;
}
continue;
case KindOfStaticString:
case KindOfString:
if (interface_supports_string(m_typeName)) {
return true;
}
continue;
case KindOfArray:
if (interface_supports_array(m_typeName)) {
return true;
}
continue;
case KindOfUninit:
case KindOfNull:
case KindOfBoolean:
case KindOfObject:
case KindOfResource:
continue;
case KindOfRef:
case KindOfClass:
break;
}
not_reached();
} while (0);
if (isCallable()) {
return HHVM_FN(is_callable)(tvAsCVarRef(tv));
}
return isPrecise() && checkTypeAliasNonObj(tv);
}
return m_type.dt && equivDataTypes(*m_type.dt, tv->m_type);
}