Owen Yamauchi
4cea6506e6
Part 2: getting rid of NVTW for initializing nonscalar static properties. This is slightly messier than the equivalent for nonstatic properties.
2434 linhas
86 KiB
C++
2434 linhas
86 KiB
C++
/*
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+----------------------------------------------------------------------+
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| HipHop for PHP |
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+----------------------------------------------------------------------+
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| Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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*/
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#include "hphp/runtime/base/complex_types.h"
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#include "hphp/runtime/base/comparisons.h"
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#include "hphp/runtime/base/hphp_array.h"
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#include "hphp/util/util.h"
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#include "hphp/util/debug.h"
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#include "hphp/runtime/vm/jit/target-cache.h"
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#include "hphp/runtime/vm/jit/translator.h"
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#include "hphp/runtime/vm/treadmill.h"
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#include "hphp/runtime/vm/request_arena.h"
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#include "hphp/system/systemlib.h"
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#include "hphp/util/logger.h"
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#include "hphp/util/parser/parser.h"
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#include <iostream>
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#include <algorithm>
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namespace HPHP {
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static StringData* sd86ctor = StringData::GetStaticString("86ctor");
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static StringData* sd86pinit = StringData::GetStaticString("86pinit");
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static StringData* sd86sinit = StringData::GetStaticString("86sinit");
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hphp_hash_map<const StringData*, const HhbcExtClassInfo*,
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string_data_hash, string_data_isame> Class::s_extClassHash;
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Class::InstanceCounts Class::s_instanceCounts;
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ReadWriteMutex Class::s_instanceCountsLock(RankInstanceCounts);
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Class::InstanceBitsMap Class::s_instanceBits;
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ReadWriteMutex Class::s_instanceBitsLock(RankInstanceBits);
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std::atomic<bool> Class::s_instanceBitsInit{false};
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const StringData* PreClass::manglePropName(const StringData* className,
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const StringData* propName,
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Attr attrs) {
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switch (attrs & (AttrPublic|AttrProtected|AttrPrivate)) {
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case AttrPublic: {
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return propName;
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}
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case AttrProtected: {
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std::string mangledName = "";
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mangledName.push_back('\0');
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mangledName.push_back('*');
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mangledName.push_back('\0');
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mangledName += propName->data();
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return StringData::GetStaticString(mangledName);
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}
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case AttrPrivate: {
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std::string mangledName = "";
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mangledName.push_back('\0');
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mangledName += className->data();
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mangledName.push_back('\0');
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mangledName += propName->data();
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return StringData::GetStaticString(mangledName);
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}
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default: not_reached();
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}
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}
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//=============================================================================
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// PreClass::Prop.
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PreClass::Prop::Prop(PreClass* preClass,
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const StringData* n,
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Attr attrs,
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const StringData* typeConstraint,
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const StringData* docComment,
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const TypedValue& val,
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DataType hphpcType)
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: m_preClass(preClass)
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, m_name(n)
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, m_attrs(attrs)
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, m_typeConstraint(typeConstraint)
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, m_docComment(docComment)
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, m_hphpcType(hphpcType)
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{
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m_mangledName = manglePropName(preClass->name(), n, attrs);
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memcpy(&m_val, &val, sizeof(TypedValue));
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}
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void PreClass::Prop::prettyPrint(std::ostream& out) const {
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out << "Property ";
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if (m_attrs & AttrStatic) { out << "static "; }
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if (m_attrs & AttrPublic) { out << "public "; }
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if (m_attrs & AttrProtected) { out << "protected "; }
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if (m_attrs & AttrPrivate) { out << "private "; }
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out << m_preClass->name()->data() << "::" << m_name->data() << " = ";
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if (m_val.m_type == KindOfUninit) {
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out << "<non-scalar>";
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} else {
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std::stringstream ss;
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staticStreamer(&m_val, ss);
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out << ss.str();
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}
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out << std::endl;
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}
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//=============================================================================
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// PreClass::Const.
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PreClass::Const::Const(PreClass* preClass, const StringData* n,
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const StringData* typeConstraint,
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const TypedValue& val, const StringData* phpCode)
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: m_preClass(preClass), m_name(n), m_typeConstraint(typeConstraint),
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m_phpCode(phpCode) {
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memcpy(&m_val, &val, sizeof(TypedValue));
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}
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void PreClass::Const::prettyPrint(std::ostream& out) const {
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out << "Constant " << m_preClass->name()->data() << "::" << m_name->data()
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<< " = ";
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if (m_val.m_type == KindOfUninit) {
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out << "<non-scalar>";
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} else {
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std::stringstream ss;
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staticStreamer(&m_val, ss);
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out << ss.str();
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}
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out << std::endl;
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}
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//=============================================================================
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// PreClass.
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PreClass::PreClass(Unit* unit, int line1, int line2, Offset o,
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const StringData* n, Attr attrs, const StringData* parent,
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const StringData* docComment, Id id, Hoistable hoistable)
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: m_unit(unit), m_line1(line1), m_line2(line2), m_offset(o), m_id(id),
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m_builtinPropSize(0), m_attrs(attrs), m_hoistable(hoistable),
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m_name(n), m_parent(parent), m_docComment(docComment),
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m_InstanceCtor(nullptr) {
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m_namedEntity = Unit::GetNamedEntity(n);
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}
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PreClass::~PreClass() {
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std::for_each(methods(), methods() + numMethods(), Func::destroy);
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}
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void PreClass::atomicRelease() {
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delete this;
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}
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void PreClass::prettyPrint(std::ostream &out) const {
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out << "Class ";
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if (m_attrs & AttrAbstract) { out << "abstract "; }
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if (m_attrs & AttrFinal) { out << "final "; }
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if (m_attrs & AttrInterface) { out << "interface "; }
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out << m_name->data() << " at " << m_offset;
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if (m_hoistable == MaybeHoistable) {
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out << " (maybe-hoistable)";
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} else if (m_hoistable == AlwaysHoistable) {
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out << " (always-hoistable)";
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}
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if (m_id != -1) {
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out << " (ID " << m_id << ")";
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}
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out << std::endl;
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for (Func* const* it = methods(); it != methods() + numMethods(); ++it) {
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out << " ";
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(*it)->prettyPrint(out);
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}
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for (const Prop* it = properties();
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it != properties() + numProperties();
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++it) {
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out << " ";
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it->prettyPrint(out);
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}
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for (const Const* it = constants();
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it != constants() + numConstants();
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++it) {
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out << " ";
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it->prettyPrint(out);
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}
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}
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//=============================================================================
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// Class.
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Class* Class::newClass(PreClass* preClass, Class* parent) {
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unsigned classVecLen = (parent != nullptr) ? parent->m_classVecLen+1 : 1;
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void* mem = Util::low_malloc(sizeForNClasses(classVecLen));
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try {
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return new (mem) Class(preClass, parent, classVecLen);
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} catch (...) {
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Util::low_free(mem);
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throw;
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}
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}
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Class::Class(PreClass* preClass, Class* parent, unsigned classVecLen)
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: m_preClass(PreClassPtr(preClass)), m_parent(parent),
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m_traitsBeginIdx(0), m_traitsEndIdx(0), m_clsInfo(nullptr),
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m_builtinPropSize(0), m_classVecLen(classVecLen), m_cachedOffset(0),
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m_propDataCache(-1), m_propSDataCache(-1), m_InstanceCtor(nullptr),
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m_nextClass(nullptr) {
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setParent();
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setUsedTraits();
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setMethods();
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setSpecial();
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setODAttributes();
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setInterfaces();
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setConstants();
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setProperties();
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setInitializers();
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setClassVec();
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}
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Class::~Class() {
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releaseRefs();
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auto methods = methodRange();
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while (!methods.empty()) {
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Func* meth = methods.popFront();
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if (meth) Func::destroy(meth);
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}
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}
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void Class::releaseRefs() {
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/*
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* We have to be careful here.
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* We want to free up as much as possible as early as possible, but
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* some of our methods may actually belong to our parent
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* This means we can't destroy *our* Funcs until our refCount
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* hits zero (ie when Class::~Class gets called), because there
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* could be a child class which hasn't yet been destroyed, which
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* will need to inspect them. Also, we need to inspect the Funcs
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* now (while we still have a references to parent) to determine
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* which ones we will eventually need to free.
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* Similarly, if any of our func's belong to a parent class, we
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* can't free the parent, because one of our children could also
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* have a reference to those func's (and its only reference to
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* our parent is via this class).
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*/
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auto methods = mutableMethodRange();
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bool okToReleaseParent = true;
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while (!methods.empty()) {
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Func*& meth = methods.popFront();
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if (meth /* releaseRefs can be called more than once */ &&
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meth->cls() != this &&
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((meth->attrs() & AttrPrivate) || !meth->hasStaticLocals())) {
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meth = nullptr;
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okToReleaseParent = false;
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}
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}
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if (okToReleaseParent) {
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m_parent.reset();
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}
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m_declInterfaces.clear();
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m_usedTraits.clear();
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}
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namespace {
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class FreeClassTrigger : public Treadmill::WorkItem {
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TRACE_SET_MOD(treadmill);
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Class* m_cls;
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public:
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explicit FreeClassTrigger(Class* cls) : m_cls(cls) {
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TRACE(3, "FreeClassTrigger @ %p, cls %p\n", this, m_cls);
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}
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void operator()() {
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TRACE(3, "FreeClassTrigger: Firing @ %p , cls %p\n", this, m_cls);
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if (!m_cls->decAtomicCount()) {
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m_cls->atomicRelease();
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}
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}
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};
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}
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void Class::destroy() {
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/*
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* If we were never put on NamedEntity::classList, or
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* we've already been destroy'd, there's nothing to do
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*/
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if (!m_cachedOffset) return;
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Lock l(Unit::s_classesMutex);
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// Need to recheck now we have the lock
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if (!m_cachedOffset) return;
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// Only do this once.
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m_cachedOffset = 0;
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PreClass* pcls = m_preClass.get();
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pcls->namedEntity()->removeClass(this);
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/*
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* Regardless of refCount, this Class is now unusable.
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* Release what we can immediately, to allow dependent
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* classes to be freed.
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* Needs to be under the lock, because multiple threads
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* could call destroy
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*/
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releaseRefs();
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Treadmill::WorkItem::enqueue(new FreeClassTrigger(this));
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}
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void Class::atomicRelease() {
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assert(!m_cachedOffset);
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assert(!getCount());
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this->~Class();
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Util::low_free(this);
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}
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Class *Class::getCached() const {
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return *(Class**)Transl::TargetCache::handleToPtr(m_cachedOffset);
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}
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void Class::setCached() {
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*(Class**)Transl::TargetCache::handleToPtr(m_cachedOffset) = this;
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}
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bool Class::verifyPersistent() const {
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if (!(attrs() & AttrPersistent)) return false;
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if (m_parent.get() &&
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!Transl::TargetCache::isPersistentHandle(m_parent->m_cachedOffset)) {
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return false;
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}
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for (auto const& declInterface : m_declInterfaces) {
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if (!Transl::TargetCache::isPersistentHandle(
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declInterface->m_cachedOffset)) {
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return false;
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}
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}
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for (auto const& usedTrait : m_usedTraits) {
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if (!Transl::TargetCache::isPersistentHandle(
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usedTrait->m_cachedOffset)) {
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return false;
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}
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}
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return true;
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}
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const Func* Class::getDeclaredCtor() const {
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const Func* f = getCtor();
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return f->name() != sd86ctor ? f : nullptr;
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}
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void Class::initInstanceBits() {
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assert(Transl::Translator::WriteLease().amOwner());
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if (s_instanceBitsInit.load(std::memory_order_acquire)) return;
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// First, grab a write lock on s_instanceCounts and grab the current set of
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// counts as quickly as possible to minimize blocking other threads still
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// trying to profile instance checks.
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typedef std::pair<const StringData*, unsigned> Count;
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std::vector<Count> counts;
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uint64_t total = 0;
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{
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// If you think of the read-write lock as a shared-exclusive lock instead,
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// the fact that we're grabbing a write lock to iterate over the table
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// makes more sense: it's safe to concurrently modify a
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// tbb::concurrent_hash_map, but iteration is not guaranteed to be safe
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// with concurrent insertions.
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WriteLock l(s_instanceCountsLock);
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for (auto& pair : s_instanceCounts) {
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counts.push_back(pair);
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total += pair.second;
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}
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}
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std::sort(counts.begin(), counts.end(), [&](const Count& a, const Count& b) {
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return a.second > b.second;
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});
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// Next, initialize s_instanceBits with the top 127 most checked classes. Bit
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// 0 is reserved as an 'initialized' flag
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unsigned i = 1;
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uint64_t accum = 0;
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for (auto& item : counts) {
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if (i >= kInstanceBits) break;
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if (Class* cls = Unit::lookupUniqueClass(item.first)) {
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if (!(cls->attrs() & AttrUnique)) {
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continue;
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}
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}
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s_instanceBits[item.first] = i;
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accum += item.second;
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++i;
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}
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// Print out stats about what we ended up using
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if (Trace::moduleEnabledRelease(Trace::instancebits, 1)) {
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Trace::traceRelease("%s: %u classes, %" PRIu64 " (%.2f%%) of warmup"
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" checks\n",
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__FUNCTION__, i-1, accum, 100.0 * accum / total);
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if (Trace::moduleEnabledRelease(Trace::instancebits, 2)) {
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accum = 0;
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i = 1;
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for (auto& pair : counts) {
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if (i >= 256) {
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Trace::traceRelease("skipping the remainder of the %zu classes\n",
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counts.size());
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break;
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}
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accum += pair.second;
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Trace::traceRelease("%3u %5.2f%% %7u -- %6.2f%% %7" PRIu64 " %s\n",
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i++, 100.0 * pair.second / total, pair.second,
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100.0 * accum / total, accum,
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pair.first->data());
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}
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}
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}
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// Finally, update m_instanceBits on every Class that currently exists. This
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// must be done while holding a lock that blocks insertion of new Classes
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// into their class lists, but in practice most Classes will already be
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// created by now and this process takes at most 10ms.
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WriteLock l(s_instanceBitsLock);
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for (AllClasses ac; !ac.empty(); ) {
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Class* c = ac.popFront();
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c->setInstanceBitsAndParents();
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}
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s_instanceBitsInit.store(true, std::memory_order_release);
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}
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void Class::profileInstanceOf(const StringData* name) {
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assert(name->isStatic());
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unsigned inc = 1;
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Class* c = Unit::lookupClass(name);
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if (c && (c->attrs() & AttrInterface)) {
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// Favor interfaces
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inc = 250;
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}
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InstanceCounts::accessor acc;
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// The extra layer of locking is here so that initInstanceBits can safely
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// iterate over s_instanceCounts while building its map of names to bits.
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ReadLock l(s_instanceCountsLock);
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if (!s_instanceCounts.insert(acc, InstanceCounts::value_type(name, inc))) {
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acc->second += inc;
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}
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}
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bool Class::haveInstanceBit(const StringData* name) {
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assert(Transl::Translator::WriteLease().amOwner());
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assert(s_instanceBitsInit.load(std::memory_order_acquire));
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return mapContains(s_instanceBits, name);
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}
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bool Class::getInstanceBitMask(const StringData* name,
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int& offset, uint8_t& mask) {
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assert(Transl::Translator::WriteLease().amOwner());
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assert(s_instanceBitsInit.load(std::memory_order_acquire));
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const size_t bitWidth = sizeof(mask) * CHAR_BIT;
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unsigned bit;
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if (!mapGet(s_instanceBits, name, &bit)) return false;
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assert(bit >= 1 && bit < kInstanceBits);
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offset = offsetof(Class, m_instanceBits) + bit / bitWidth * sizeof(mask);
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mask = 1u << (bit % bitWidth);
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return true;
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}
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/*
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* Check whether a Class from a previous request is available to be defined.
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* The caller should check that it has the same preClass that is being defined.
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* Being available means that the parent, the interfaces and the traits are
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* already defined (or become defined via autoload, if tryAutoload is true).
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*
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* returns Avail::True - if it is available
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* Avail::Fail - if it is impossible to define the class at this point
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* Avail::False- if this particular Class* cant be defined at this point
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*
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* Note that Fail means that at least one of the parent, interfaces and traits
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* was not defined at all, while False means that at least one was defined but
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* did not correspond to this Class*
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*
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* The parent parameter is used for two purposes: first it avoids looking up the
|
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* active parent class for each potential Class*; and second its used on
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* Fail to return the problem class so the caller can report the error
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* correctly.
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*/
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Class::Avail Class::avail(Class*& parent, bool tryAutoload /*=false*/) const {
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if (Class *ourParent = m_parent.get()) {
|
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if (!parent) {
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PreClass *ppcls = ourParent->m_preClass.get();
|
|
parent = Unit::getClass(ppcls->namedEntity(), ppcls->name(), tryAutoload);
|
|
if (!parent) {
|
|
parent = ourParent;
|
|
return Avail::Fail;
|
|
}
|
|
}
|
|
if (parent != ourParent) {
|
|
if (UNLIKELY(ourParent->isZombie())) {
|
|
const_cast<Class*>(this)->destroy();
|
|
}
|
|
return Avail::False;
|
|
}
|
|
}
|
|
for (auto const& di : m_declInterfaces) {
|
|
Class* declInterface = di.get();
|
|
PreClass *pint = declInterface->m_preClass.get();
|
|
Class* interface = Unit::getClass(pint->namedEntity(), pint->name(),
|
|
tryAutoload);
|
|
if (interface != declInterface) {
|
|
if (interface == nullptr) {
|
|
parent = declInterface;
|
|
return Avail::Fail;
|
|
}
|
|
if (UNLIKELY(declInterface->isZombie())) {
|
|
const_cast<Class*>(this)->destroy();
|
|
}
|
|
return Avail::False;
|
|
}
|
|
}
|
|
for (auto const& ut : m_usedTraits) {
|
|
Class* usedTrait = ut.get();
|
|
PreClass* ptrait = usedTrait->m_preClass.get();
|
|
Class* trait = Unit::getClass(ptrait->namedEntity(), ptrait->name(),
|
|
tryAutoload);
|
|
if (trait != usedTrait) {
|
|
if (trait == nullptr) {
|
|
parent = usedTrait;
|
|
return Avail::Fail;
|
|
}
|
|
if (UNLIKELY(usedTrait->isZombie())) {
|
|
const_cast<Class*>(this)->destroy();
|
|
}
|
|
return Avail::False;
|
|
}
|
|
}
|
|
return Avail::True;
|
|
}
|
|
|
|
void Class::initialize(TypedValue*& sProps) const {
|
|
if (m_pinitVec.size() > 0) {
|
|
if (getPropData() == nullptr) {
|
|
initProps();
|
|
}
|
|
}
|
|
// The asymmetry between the logic around initProps() above and initSProps()
|
|
// below is due to the fact that instance properties only require storage in
|
|
// g_vmContext if there are non-scalar initializers involved, whereas static
|
|
// properties *always* require storage in g_vmContext.
|
|
if (numStaticProperties() > 0) {
|
|
if ((sProps = getSPropData()) == nullptr) {
|
|
sProps = initSProps();
|
|
}
|
|
} else {
|
|
sProps = nullptr;
|
|
}
|
|
}
|
|
|
|
void Class::initialize() const {
|
|
TypedValue* sProps;
|
|
initialize(sProps);
|
|
}
|
|
|
|
Class::PropInitVec* Class::initPropsImpl() const {
|
|
assert(m_pinitVec.size() > 0);
|
|
assert(getPropData() == nullptr);
|
|
// Copy initial values for properties to a new vector that can be used to
|
|
// complete initialization for non-scalar properties via the iterative
|
|
// 86pinit() calls below. 86pinit() takes a reference to an array to populate
|
|
// with initial property values; after it completes, we copy the values into
|
|
// the new propVec.
|
|
request_arena().beginFrame();
|
|
PropInitVec* propVec = PropInitVec::allocInRequestArena(m_declPropInit);
|
|
size_t nProps = numDeclProperties();
|
|
|
|
{
|
|
Array args;
|
|
|
|
HphpArray* propArr = ArrayData::Make(nProps);
|
|
Variant arg0(propArr);
|
|
|
|
args.appendRef(arg0);
|
|
assert(propArr->getCount() == 1); // Don't want to trigger COW
|
|
{
|
|
// Create a sentinel that uniquely identifies uninitialized properties.
|
|
ObjectData* sentinel = SystemLib::AllocPinitSentinel();
|
|
sentinel->incRefCount();
|
|
TypedValue tv;
|
|
tv.m_data.pobj = sentinel;
|
|
tv.m_type = KindOfObject;
|
|
args.append(tvAsCVarRef(&tv));
|
|
sentinel->decRefCount();
|
|
}
|
|
|
|
TypedValue* tvSentinel = args->nvGetValueRef(1);
|
|
for (size_t i = 0; i < nProps; ++i) {
|
|
TypedValue& prop = (*propVec)[i];
|
|
// We have to use m_originalMangledName here because the
|
|
// 86pinit methods for traits depend on it
|
|
auto const* k = (m_declProperties[i].m_attrs & AttrPrivate)
|
|
? m_declProperties[i].m_originalMangledName
|
|
: m_declProperties[i].m_name;
|
|
|
|
// Replace undefined values with tvSentinel, which acts as a
|
|
// unique sentinel for undefined properties in 86pinit().
|
|
if (prop.m_type == KindOfUninit) {
|
|
propArr->nvInsert(const_cast<StringData*>(k), tvSentinel);
|
|
} else {
|
|
// This may seem pointless, but if you don't populate all the keys,
|
|
// you'll get "undefined index" notices in the case where a
|
|
// scalar-initialized property overrides a parent's
|
|
// non-scalar-initialized property of the same name.
|
|
propArr->nvInsert(const_cast<StringData*>(k), &prop);
|
|
}
|
|
}
|
|
|
|
try {
|
|
// Iteratively invoke 86pinit() methods upward
|
|
// through the inheritance chain.
|
|
for (Class::InitVec::const_reverse_iterator it = m_pinitVec.rbegin();
|
|
it != m_pinitVec.rend(); ++it) {
|
|
TypedValue retval;
|
|
g_vmContext->invokeFunc(&retval, *it, args, nullptr,
|
|
const_cast<Class*>(this));
|
|
assert(retval.m_type == KindOfNull);
|
|
}
|
|
} catch (...) {
|
|
// Undo the allocation of propVec
|
|
request_arena().endFrame();
|
|
throw;
|
|
}
|
|
|
|
// Pull the values out of the populated array and put them in propVec
|
|
for (size_t i = 0; i < nProps; ++i) {
|
|
TypedValue& prop = (*propVec)[i];
|
|
if (prop.m_type == KindOfUninit) {
|
|
auto const* k = (m_declProperties[i].m_attrs & AttrPrivate)
|
|
? m_declProperties[i].m_originalMangledName
|
|
: m_declProperties[i].m_name;
|
|
|
|
auto const* value = propArr->nvGet(k);
|
|
assert(value);
|
|
tvDup(*value, prop);
|
|
}
|
|
}
|
|
}
|
|
|
|
// For properties that do not require deep initialization, promote strings
|
|
// and arrays that came from 86pinit to static. This allows us to initialize
|
|
// object properties very quickly because we can just memcpy and we don't
|
|
// have to do any refcounting.
|
|
// For properties that require "deep" initialization, we have to do a little
|
|
// more work at object creation time.
|
|
Slot slot = 0;
|
|
for (PropInitVec::iterator it = propVec->begin();
|
|
it != propVec->end(); ++it, ++slot) {
|
|
TypedValueAux* tv = &(*it);
|
|
// Set deepInit if the property requires "deep" initialization.
|
|
if (m_declProperties[slot].m_attrs & AttrDeepInit) {
|
|
tv->deepInit() = true;
|
|
} else {
|
|
tvAsVariant(tv).setEvalScalar();
|
|
tv->deepInit() = false;
|
|
}
|
|
}
|
|
|
|
return propVec;
|
|
}
|
|
|
|
Slot Class::getDeclPropIndex(Class* ctx, const StringData* key,
|
|
bool& accessible) const {
|
|
Slot propInd = lookupDeclProp(key);
|
|
if (propInd != kInvalidSlot) {
|
|
Attr attrs = m_declProperties[propInd].m_attrs;
|
|
if ((attrs & (AttrProtected|AttrPrivate)) &&
|
|
!g_vmContext->getDebuggerBypassCheck()) {
|
|
// Fetch 'baseClass', which is the class in the inheritance
|
|
// tree which first declared the property
|
|
Class* baseClass = m_declProperties[propInd].m_class;
|
|
assert(baseClass);
|
|
// If ctx == baseClass, we know we have the right property
|
|
// and we can stop here.
|
|
if (ctx == baseClass) {
|
|
accessible = true;
|
|
return propInd;
|
|
}
|
|
// The anonymous context cannot access protected or private
|
|
// properties, so we can fail fast here.
|
|
if (ctx == nullptr) {
|
|
accessible = false;
|
|
return propInd;
|
|
}
|
|
assert(ctx);
|
|
if (attrs & AttrPrivate) {
|
|
// ctx != baseClass and the property is private, so it is not
|
|
// accessible. We need to keep going because ctx may define a
|
|
// private property with this name.
|
|
accessible = false;
|
|
} else {
|
|
if (ctx->classof(baseClass)) {
|
|
// ctx is derived from baseClass, so we know this protected
|
|
// property is accessible and we know ctx cannot have private
|
|
// property with the same name, so we're done.
|
|
accessible = true;
|
|
return propInd;
|
|
}
|
|
if (!baseClass->classof(ctx)) {
|
|
// ctx is not the same, an ancestor, or a descendent of baseClass,
|
|
// so the property is not accessible. Also, we know that ctx cannot
|
|
// be the same or an ancestor of this, so we don't need to check if
|
|
// ctx declares a private property with the same name and we can
|
|
// fail fast here.
|
|
accessible = false;
|
|
return propInd;
|
|
}
|
|
// We now know this protected property is accessible, but we need to
|
|
// keep going because ctx may define a private property with the same
|
|
// name.
|
|
accessible = true;
|
|
assert(baseClass->classof(ctx));
|
|
}
|
|
} else {
|
|
// The property is public (or we're in the debugger and we are bypassing
|
|
// accessibility checks).
|
|
accessible = true;
|
|
// If ctx == this, we don't have to check if ctx defines a private
|
|
// property with the same name and we can stop here.
|
|
if (ctx == this) {
|
|
return propInd;
|
|
}
|
|
// We still need to check if ctx defines a private property with the
|
|
// same name.
|
|
}
|
|
} else {
|
|
// We didn't find a visible declared property in this's property map
|
|
accessible = false;
|
|
}
|
|
// If ctx is an ancestor of this, check if ctx has a private property
|
|
// with the same name.
|
|
if (ctx && classof(ctx)) {
|
|
Slot ctxPropInd = ctx->lookupDeclProp(key);
|
|
if (ctxPropInd != kInvalidSlot &&
|
|
ctx->m_declProperties[ctxPropInd].m_class == ctx &&
|
|
(ctx->m_declProperties[ctxPropInd].m_attrs & AttrPrivate)) {
|
|
// A private property from ctx trumps any other property we may
|
|
// have found.
|
|
accessible = true;
|
|
return ctxPropInd;
|
|
}
|
|
}
|
|
return propInd;
|
|
}
|
|
|
|
TypedValue* Class::initSPropsImpl() const {
|
|
assert(numStaticProperties() > 0);
|
|
assert(getSPropData() == nullptr);
|
|
// Create an array that is initially large enough to hold all static
|
|
// properties.
|
|
TypedValue* const spropTable =
|
|
new (request_arena()) TypedValue[m_staticProperties.size()];
|
|
|
|
const bool hasNonscalarInit = !m_sinitVec.empty();
|
|
Array propArr;
|
|
TypedValue tvSentinel;
|
|
tvWriteUninit(&tvSentinel);
|
|
|
|
SCOPE_EXIT {
|
|
tvRefcountedDecRef(&tvSentinel);
|
|
};
|
|
|
|
// If there are non-scalar initializers (i.e. 86sinit methods), run them now.
|
|
// They'll put their initialized values into an array, and we'll read any
|
|
// values we need out of the array later.
|
|
if (hasNonscalarInit) {
|
|
HphpArray* propData = ArrayData::Make(m_staticProperties.size());
|
|
Variant arg0(propData);
|
|
|
|
// The 86sinit functions will initialize some subset of the static props.
|
|
// Set all of them to a sentinel object so we can distinguish these.
|
|
tvSentinel.m_type = KindOfObject;
|
|
tvSentinel.m_data.pobj = SystemLib::AllocPinitSentinel();
|
|
tvSentinel.m_data.pobj->incRefCount();
|
|
|
|
for (Slot slot = 0; slot < m_staticProperties.size(); ++slot) {
|
|
auto const& sProp = m_staticProperties[slot];
|
|
propData->set(const_cast<StringData*>(sProp.m_name),
|
|
tvAsCVarRef(&tvSentinel),
|
|
false);
|
|
}
|
|
|
|
// Run the 86sinit functions, going up the inheritance chain.
|
|
Array args;
|
|
args.appendRef(arg0);
|
|
assert(propData->getCount() == 1); // don't want to trigger COW
|
|
|
|
for (unsigned i = 0; i < m_sinitVec.size(); i++) {
|
|
TypedValue retval;
|
|
g_vmContext->invokeFunc(&retval, m_sinitVec[i], args, nullptr,
|
|
const_cast<Class*>(this));
|
|
assert(retval.m_type == KindOfNull);
|
|
}
|
|
|
|
// Transfer ownership of the reference to the outer scope.
|
|
propArr = propData;
|
|
}
|
|
|
|
// A helper to look up values produced by 86sinit.
|
|
auto getValueFromArr = [&](const StringData* name) -> const TypedValue* {
|
|
if (!propArr.isNull()) {
|
|
assert(tvSentinel.m_type == KindOfObject);
|
|
auto const* v = propArr.get()->nvGet(name);
|
|
if (v->m_type != KindOfObject ||
|
|
v->m_data.pobj != tvSentinel.m_data.pobj) {
|
|
return v;
|
|
}
|
|
}
|
|
return nullptr;
|
|
};
|
|
|
|
for (Slot slot = 0; slot < m_staticProperties.size(); ++slot) {
|
|
auto const& sProp = m_staticProperties[slot];
|
|
auto const* propName = sProp.m_name;
|
|
|
|
if (sProp.m_class == this) {
|
|
auto const* value = getValueFromArr(propName);
|
|
if (value) {
|
|
tvDup(*value, spropTable[slot]);
|
|
} else {
|
|
assert(tvIsStatic(&sProp.m_val));
|
|
spropTable[slot] = sProp.m_val;
|
|
}
|
|
} else {
|
|
bool visible, accessible;
|
|
auto* storage = sProp.m_class->getSProp(nullptr, propName,
|
|
visible, accessible);
|
|
auto const* value = getValueFromArr(propName);
|
|
if (value) {
|
|
tvDup(*value, *storage);
|
|
}
|
|
|
|
tvBindIndirect(&spropTable[slot], storage);
|
|
}
|
|
}
|
|
|
|
return spropTable;
|
|
}
|
|
|
|
TypedValue* Class::getSProp(Class* ctx, const StringData* sPropName,
|
|
bool& visible, bool& accessible) const {
|
|
TypedValue* sProps;
|
|
initialize(sProps);
|
|
|
|
Slot sPropInd = lookupSProp(sPropName);
|
|
if (sPropInd == kInvalidSlot) {
|
|
// Non-existant property.
|
|
visible = false;
|
|
accessible = false;
|
|
return nullptr;
|
|
}
|
|
|
|
visible = true;
|
|
if (ctx == this) {
|
|
// Property access is from within a method of this class, so the property
|
|
// is accessible.
|
|
accessible = true;
|
|
} else {
|
|
Attr sPropAttrs = m_staticProperties[sPropInd].m_attrs;
|
|
if ((ctx != nullptr) && (classof(ctx) || ctx->classof(this))) {
|
|
// Property access is from within a parent class's method, which is
|
|
// allowed for protected/public properties.
|
|
switch (sPropAttrs & (AttrPublic|AttrProtected|AttrPrivate)) {
|
|
case AttrPublic:
|
|
case AttrProtected: accessible = true; break;
|
|
case AttrPrivate:
|
|
accessible = g_vmContext->getDebuggerBypassCheck(); break;
|
|
default: not_reached();
|
|
}
|
|
} else {
|
|
// Property access is in an effectively anonymous context, so only public
|
|
// properties are accessible.
|
|
switch (sPropAttrs & (AttrPublic|AttrProtected|AttrPrivate)) {
|
|
case AttrPublic: accessible = true; break;
|
|
case AttrProtected:
|
|
case AttrPrivate:
|
|
accessible = g_vmContext->getDebuggerBypassCheck(); break;
|
|
default: not_reached();
|
|
}
|
|
}
|
|
}
|
|
|
|
assert(sProps != nullptr);
|
|
TypedValue* sProp = tvDerefIndirect(&sProps[sPropInd]);
|
|
assert(sProp->m_type != KindOfUninit &&
|
|
"static property initialization failed to initialize a property");
|
|
return sProp;
|
|
}
|
|
|
|
bool Class::IsPropAccessible(const Prop& prop, Class* ctx) {
|
|
if (prop.m_attrs & AttrPublic) return true;
|
|
if (prop.m_attrs & AttrPrivate) return prop.m_class == ctx;
|
|
if (!ctx) return false;
|
|
|
|
return prop.m_class->classof(ctx) || ctx->classof(prop.m_class);
|
|
}
|
|
|
|
TypedValue Class::getStaticPropInitVal(const SProp& prop) {
|
|
Class* declCls = prop.m_class;
|
|
Slot s = declCls->m_staticProperties.findIndex(prop.m_name);
|
|
assert(s != kInvalidSlot);
|
|
return declCls->m_staticProperties[s].m_val;
|
|
}
|
|
|
|
HphpArray* Class::initClsCnsData() const {
|
|
Slot nConstants = m_constants.size();
|
|
HphpArray* constants = ArrayData::Make(nConstants);
|
|
constants->incRefCount();
|
|
|
|
if (m_parent.get() != nullptr) {
|
|
if (g_vmContext->getClsCnsData(m_parent.get()) == nullptr) {
|
|
// Initialize recursively up the inheritance chain.
|
|
m_parent->initClsCnsData();
|
|
}
|
|
}
|
|
|
|
for (Slot i = 0; i < nConstants; ++i) {
|
|
const Const& constant = m_constants[i];
|
|
const TypedValue* tv = &constant.m_val;
|
|
constants->set((StringData*)constant.m_name, tvAsCVarRef(tv), false);
|
|
// XXX: set() converts KindOfUninit to KindOfNull, but our class
|
|
// constant logic needs to store KindOfUninit to indicate the the
|
|
// constant's value has not been computed yet. We should find a better
|
|
// way to deal with this.
|
|
if (tv->m_type == KindOfUninit) {
|
|
constants->nvGetValueRef(i)->m_type = KindOfUninit;
|
|
}
|
|
}
|
|
|
|
g_vmContext->setClsCnsData(this, constants);
|
|
return constants;
|
|
}
|
|
|
|
TypedValue* Class::cnsNameToTV(const StringData* clsCnsName,
|
|
Slot& clsCnsInd) const {
|
|
clsCnsInd = m_constants.findIndex(clsCnsName);
|
|
if (clsCnsInd == kInvalidSlot) {
|
|
return nullptr;
|
|
}
|
|
return const_cast<TypedValue*>(&m_constants[clsCnsInd].m_val);
|
|
}
|
|
|
|
TypedValue* Class::clsCnsGet(const StringData* clsCnsName) const {
|
|
Slot clsCnsInd;
|
|
TypedValue* clsCns = cnsNameToTV(clsCnsName, clsCnsInd);
|
|
if (!clsCns || clsCns->m_type != KindOfUninit) {
|
|
return clsCns;
|
|
}
|
|
|
|
// This constant has a non-scalar initializer, so look in g_vmContext for
|
|
// an entry associated with this class.
|
|
HphpArray* clsCnsData = g_vmContext->getClsCnsData(this);
|
|
if (clsCnsData == nullptr) {
|
|
clsCnsData = initClsCnsData();
|
|
}
|
|
|
|
clsCns = clsCnsData->nvGetValueRef(clsCnsInd);
|
|
if (clsCns->m_type == KindOfUninit) {
|
|
// The class constant has not been initialized yet; do so.
|
|
static StringData* sd86cinit = StringData::GetStaticString("86cinit");
|
|
const Func* meth86cinit =
|
|
m_constants[clsCnsInd].m_class->lookupMethod(sd86cinit);
|
|
TypedValue tv[1];
|
|
tv->m_data.pstr = (StringData*)clsCnsName;
|
|
tv->m_type = KindOfString;
|
|
clsCnsName->incRefCount();
|
|
g_vmContext->invokeFuncFew(clsCns, meth86cinit, ActRec::encodeClass(this),
|
|
nullptr, 1, tv);
|
|
}
|
|
return clsCns;
|
|
}
|
|
|
|
DataType Class::clsCnsType(const StringData* cnsName) const {
|
|
Slot slot;
|
|
TypedValue* cns = cnsNameToTV(cnsName, slot);
|
|
// TODO: lookup the constant in target cache in case it's dynamic
|
|
// and already initialized.
|
|
if (!cns) return KindOfUninit;
|
|
return cns->m_type;
|
|
}
|
|
|
|
void Class::setParent() {
|
|
// Validate the parent
|
|
if (m_parent.get() != nullptr) {
|
|
Attr attrs = m_parent->attrs();
|
|
if (UNLIKELY(attrs & (AttrFinal | AttrInterface | AttrTrait))) {
|
|
static StringData* sd___MockClass =
|
|
StringData::GetStaticString("__MockClass");
|
|
if (!(attrs & AttrFinal) ||
|
|
m_preClass->userAttributes().find(sd___MockClass) ==
|
|
m_preClass->userAttributes().end()) {
|
|
raise_error("Class %s may not inherit from %s (%s)",
|
|
m_preClass->name()->data(),
|
|
((attrs & AttrFinal) ? "final class" :
|
|
(attrs & AttrInterface) ? "interface" : "trait"),
|
|
m_parent->name()->data());
|
|
}
|
|
}
|
|
}
|
|
// Cache m_preClass->attrs()
|
|
m_attrCopy = m_preClass->attrs();
|
|
// Handle stuff specific to cppext classes
|
|
if (m_preClass->instanceCtor()) {
|
|
m_InstanceCtor = m_preClass->instanceCtor();
|
|
m_builtinPropSize = m_preClass->builtinPropSize();
|
|
m_clsInfo = ClassInfo::FindSystemClassInterfaceOrTrait(nameRef());
|
|
} else if (m_parent.get()) {
|
|
m_InstanceCtor = m_parent->m_InstanceCtor;
|
|
m_builtinPropSize = m_parent->m_builtinPropSize;
|
|
}
|
|
}
|
|
|
|
static Func* findSpecialMethod(Class* cls, const StringData* name) {
|
|
if (!cls->preClass()->hasMethod(name)) return nullptr;
|
|
Func* f = cls->preClass()->lookupMethod(name);
|
|
f = f->clone();
|
|
f->setNewFuncId();
|
|
f->setCls(cls);
|
|
f->setBaseCls(cls);
|
|
f->setHasPrivateAncestor(false);
|
|
return f;
|
|
}
|
|
|
|
void Class::setSpecial() {
|
|
static StringData* sd_toString = StringData::GetStaticString("__toString");
|
|
static StringData* sd_uuconstruct =
|
|
StringData::GetStaticString("__construct");
|
|
static StringData* sd_uudestruct =
|
|
StringData::GetStaticString("__destruct");
|
|
|
|
m_toString = lookupMethod(sd_toString);
|
|
m_dtor = lookupMethod(sd_uudestruct);
|
|
|
|
// Look for __construct() declared in either this class or a trait
|
|
Func* fConstruct = lookupMethod(sd_uuconstruct);
|
|
if (fConstruct && (fConstruct->preClass() == m_preClass.get() ||
|
|
fConstruct->preClass()->attrs() & AttrTrait)) {
|
|
m_ctor = fConstruct;
|
|
return;
|
|
}
|
|
|
|
if (!(attrs() & AttrTrait)) {
|
|
// Look for Foo::Foo() declared in this class (cannot be via trait).
|
|
Func* fNamedCtor = lookupMethod(m_preClass->name());
|
|
if (fNamedCtor && fNamedCtor->preClass() == m_preClass.get() &&
|
|
!(fNamedCtor->attrs() & AttrTrait)) {
|
|
/*
|
|
Note: AttrTrait was set by the emitter if hphpc inlined a trait
|
|
method into a class (WholeProgram mode only), so that we dont
|
|
accidently mark it as a constructor here
|
|
*/
|
|
m_ctor = fNamedCtor;
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Look for parent constructor other than 86ctor().
|
|
if (m_parent.get() != nullptr &&
|
|
m_parent->m_ctor->name() != sd86ctor) {
|
|
m_ctor = m_parent->m_ctor;
|
|
return;
|
|
}
|
|
|
|
// Use 86ctor(), since no program-supplied constructor exists
|
|
m_ctor = findSpecialMethod(this, sd86ctor);
|
|
assert(m_ctor && "class had no user-defined constructor or 86ctor");
|
|
assert((m_ctor->attrs() & ~AttrBuiltin) ==
|
|
(AttrPublic|AttrNoInjection|AttrPhpLeafFn));
|
|
}
|
|
|
|
void Class::applyTraitPrecRule(const PreClass::TraitPrecRule& rule,
|
|
MethodToTraitListMap& importMethToTraitMap) {
|
|
const StringData* methName = rule.getMethodName();
|
|
const StringData* selectedTraitName = rule.getSelectedTraitName();
|
|
TraitNameSet otherTraitNames;
|
|
rule.getOtherTraitNames(otherTraitNames);
|
|
|
|
auto methIter = importMethToTraitMap.find(methName);
|
|
if (methIter == importMethToTraitMap.end()) {
|
|
raise_error("unknown method '%s'", methName->data());
|
|
}
|
|
|
|
bool foundSelectedTrait = false;
|
|
|
|
TraitMethodList &methList = methIter->second;
|
|
for (TraitMethodList::iterator nextTraitIter = methList.begin();
|
|
nextTraitIter != methList.end(); ) {
|
|
TraitMethodList::iterator traitIter = nextTraitIter++;
|
|
const StringData* availTraitName = traitIter->m_trait->name();
|
|
if (availTraitName == selectedTraitName) {
|
|
foundSelectedTrait = true;
|
|
} else {
|
|
if (otherTraitNames.find(availTraitName) != otherTraitNames.end()) {
|
|
otherTraitNames.erase(availTraitName);
|
|
methList.erase(traitIter);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check error conditions
|
|
if (!foundSelectedTrait) {
|
|
raise_error("unknown trait '%s'", selectedTraitName->data());
|
|
}
|
|
if (otherTraitNames.size()) {
|
|
raise_error("unknown trait '%s'", (*otherTraitNames.begin())->data());
|
|
}
|
|
}
|
|
|
|
Class* Class::findSingleTraitWithMethod(const StringData* methName) {
|
|
// Note: m_methods includes methods from parents / traits recursively
|
|
Class* traitCls = nullptr;
|
|
for (auto const& t : m_usedTraits) {
|
|
if (t->m_methods.contains(methName)) {
|
|
if (traitCls != nullptr) { // more than one trait contains method
|
|
return nullptr;
|
|
}
|
|
traitCls = t.get();
|
|
}
|
|
}
|
|
return traitCls;
|
|
}
|
|
|
|
void Class::setImportTraitMethodModifiers(TraitMethodList& methList,
|
|
Class* traitCls,
|
|
Attr modifiers) {
|
|
for (TraitMethodList::iterator iter = methList.begin();
|
|
iter != methList.end(); iter++) {
|
|
if (iter->m_trait == traitCls) {
|
|
iter->m_modifiers = modifiers;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Keep track of trait aliases in the class to support
|
|
// ReflectionClass::getTraitAliases
|
|
void Class::addTraitAlias(const StringData* traitName,
|
|
const StringData* origMethName,
|
|
const StringData* newMethName) {
|
|
char buf[traitName->size() + origMethName->size() + 9];
|
|
sprintf(buf, "%s::%s", (traitName->empty() ? "(null)" : traitName->data()),
|
|
origMethName->data());
|
|
const StringData* origName = StringData::GetStaticString(buf);
|
|
m_traitAliases.push_back(std::pair<const StringData*, const StringData*>
|
|
(newMethName, origName));
|
|
}
|
|
|
|
void Class::applyTraitAliasRule(const PreClass::TraitAliasRule& rule,
|
|
MethodToTraitListMap& importMethToTraitMap) {
|
|
const StringData* traitName = rule.getTraitName();
|
|
const StringData* origMethName = rule.getOrigMethodName();
|
|
const StringData* newMethName = rule.getNewMethodName();
|
|
|
|
Class* traitCls = nullptr;
|
|
if (traitName->empty()) {
|
|
traitCls = findSingleTraitWithMethod(origMethName);
|
|
} else {
|
|
traitCls = Unit::loadClass(traitName);
|
|
}
|
|
|
|
if (!traitCls || (!(traitCls->attrs() & AttrTrait))) {
|
|
raise_error("unknown trait '%s'", traitName->data());
|
|
}
|
|
|
|
// Save info to support ReflectionClass::getTraitAliases
|
|
addTraitAlias(traitName, origMethName, newMethName);
|
|
|
|
Func* traitMeth = traitCls->lookupMethod(origMethName);
|
|
if (!traitMeth) {
|
|
raise_error("unknown trait method '%s'", origMethName->data());
|
|
}
|
|
|
|
Attr ruleModifiers;
|
|
if (origMethName == newMethName) {
|
|
ruleModifiers = rule.getModifiers();
|
|
setImportTraitMethodModifiers(importMethToTraitMap[origMethName],
|
|
traitCls, ruleModifiers);
|
|
} else {
|
|
ruleModifiers = rule.getModifiers();
|
|
TraitMethod traitMethod(traitCls, traitMeth, ruleModifiers);
|
|
if (!Func::isSpecial(newMethName)) {
|
|
importMethToTraitMap[newMethName].push_back(traitMethod);
|
|
}
|
|
}
|
|
if (ruleModifiers & AttrStatic) {
|
|
raise_error("cannot use 'static' as access modifier");
|
|
}
|
|
}
|
|
|
|
void Class::applyTraitRules(MethodToTraitListMap& importMethToTraitMap) {
|
|
for (size_t i = 0; i < m_preClass->traitPrecRules().size(); i++) {
|
|
applyTraitPrecRule(m_preClass->traitPrecRules()[i],
|
|
importMethToTraitMap);
|
|
}
|
|
for (size_t i = 0; i < m_preClass->traitAliasRules().size(); i++) {
|
|
applyTraitAliasRule(m_preClass->traitAliasRules()[i],
|
|
importMethToTraitMap);
|
|
}
|
|
}
|
|
|
|
void Class::importTraitMethod(const TraitMethod& traitMethod,
|
|
const StringData* methName,
|
|
MethodMap::Builder& builder) {
|
|
Func* method = traitMethod.m_method;
|
|
Attr modifiers = traitMethod.m_modifiers;
|
|
|
|
MethodMap::Builder::iterator mm_iter = builder.find(methName);
|
|
// For abstract methods, simply return if method already declared
|
|
if ((modifiers & AttrAbstract) && mm_iter != builder.end()) {
|
|
return;
|
|
}
|
|
|
|
if (modifiers == AttrNone) {
|
|
modifiers = method->attrs();
|
|
} else {
|
|
// Trait alias statements are only allowed to change the attributes that
|
|
// are part 'attrMask' below; all other method attributes are preserved
|
|
Attr attrMask = (Attr)(AttrPublic | AttrProtected | AttrPrivate |
|
|
AttrAbstract | AttrFinal);
|
|
modifiers = (Attr)((modifiers & (attrMask)) |
|
|
(method->attrs() & ~(attrMask)));
|
|
}
|
|
|
|
Func* parentMethod = nullptr;
|
|
if (mm_iter != builder.end()) {
|
|
Func* existingMethod = builder[mm_iter->second];
|
|
if (existingMethod->cls() == this) {
|
|
// Don't override an existing method if this class provided an
|
|
// implementation
|
|
return;
|
|
}
|
|
parentMethod = existingMethod;
|
|
}
|
|
Func* f = method->clone();
|
|
f->setNewFuncId();
|
|
f->setClsAndName(this, methName);
|
|
f->setAttrs(modifiers);
|
|
if (!parentMethod) {
|
|
// New method
|
|
builder.add(methName, f);
|
|
f->setBaseCls(this);
|
|
f->setHasPrivateAncestor(false);
|
|
} else {
|
|
// Override an existing method
|
|
Class* baseClass;
|
|
|
|
methodOverrideCheck(parentMethod, f);
|
|
|
|
assert(!(f->attrs() & AttrPrivate) ||
|
|
(parentMethod->attrs() & AttrPrivate));
|
|
if ((parentMethod->attrs() & AttrPrivate) || (f->attrs() & AttrPrivate)) {
|
|
baseClass = this;
|
|
} else {
|
|
baseClass = parentMethod->baseCls();
|
|
}
|
|
f->setBaseCls(baseClass);
|
|
f->setHasPrivateAncestor(
|
|
parentMethod->hasPrivateAncestor() ||
|
|
(parentMethod->attrs() & AttrPrivate));
|
|
builder[mm_iter->second] = f;
|
|
}
|
|
}
|
|
|
|
// This method removes trait abstract methods that are either:
|
|
// 1) implemented by other traits
|
|
// 2) duplicate
|
|
void Class::removeSpareTraitAbstractMethods(
|
|
MethodToTraitListMap& importMethToTraitMap) {
|
|
|
|
for (MethodToTraitListMap::iterator iter = importMethToTraitMap.begin();
|
|
iter != importMethToTraitMap.end(); iter++) {
|
|
|
|
TraitMethodList& tMethList = iter->second;
|
|
bool hasNonAbstractMeth = false;
|
|
unsigned countAbstractMeths = 0;
|
|
for (TraitMethodList::const_iterator traitMethIter = tMethList.begin();
|
|
traitMethIter != tMethList.end(); traitMethIter++) {
|
|
if (!(traitMethIter->m_modifiers & AttrAbstract)) {
|
|
hasNonAbstractMeth = true;
|
|
} else {
|
|
countAbstractMeths++;
|
|
}
|
|
}
|
|
if (hasNonAbstractMeth || countAbstractMeths > 1) {
|
|
// Erase spare abstract declarations
|
|
bool firstAbstractMeth = true;
|
|
for (TraitMethodList::iterator nextTraitIter = tMethList.begin();
|
|
nextTraitIter != tMethList.end(); ) {
|
|
TraitMethodList::iterator traitIter = nextTraitIter++;
|
|
if (traitIter->m_modifiers & AttrAbstract) {
|
|
if (hasNonAbstractMeth || !firstAbstractMeth) {
|
|
tMethList.erase(traitIter);
|
|
}
|
|
firstAbstractMeth = false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// fatals on error
|
|
void Class::importTraitMethods(MethodMap::Builder& builder) {
|
|
MethodToTraitListMap importMethToTraitMap;
|
|
|
|
// 1. Find all methods to be imported
|
|
for (auto const& t : m_usedTraits) {
|
|
Class* trait = t.get();
|
|
for (Slot i = 0; i < trait->m_methods.size(); ++i) {
|
|
Func* method = trait->m_methods[i];
|
|
const StringData* methName = method->name();
|
|
TraitMethod traitMethod(trait, method, method->attrs());
|
|
if (!Func::isSpecial(methName)) {
|
|
importMethToTraitMap[methName].push_back(traitMethod);
|
|
}
|
|
}
|
|
}
|
|
|
|
// 2. Apply trait rules
|
|
applyTraitRules(importMethToTraitMap);
|
|
|
|
// 3. Remove abstract methods provided by other traits, and also duplicates
|
|
removeSpareTraitAbstractMethods(importMethToTraitMap);
|
|
|
|
// 4. Actually import the methods
|
|
for (MethodToTraitListMap::const_iterator iter =
|
|
importMethToTraitMap.begin();
|
|
iter != importMethToTraitMap.end(); iter++) {
|
|
|
|
// The rules may rule out a method from all traits.
|
|
// In this case, simply don't import the method.
|
|
if (iter->second.size() == 0) {
|
|
continue;
|
|
}
|
|
|
|
// Consistency checking: each name must only refer to one imported method
|
|
if (iter->second.size() > 1) {
|
|
// OK if the class will override the method...
|
|
if (m_preClass->hasMethod(iter->first)) continue;
|
|
|
|
raise_error("method '%s' declared in multiple traits",
|
|
iter->first->data());
|
|
}
|
|
|
|
TraitMethodList::const_iterator traitMethIter = iter->second.begin();
|
|
importTraitMethod(*traitMethIter, iter->first, builder);
|
|
}
|
|
}
|
|
|
|
|
|
void Class::methodOverrideCheck(const Func* parentMethod, const Func* method) {
|
|
// Skip special methods
|
|
if (method->isGenerated()) return;
|
|
|
|
if ((parentMethod->attrs() & AttrFinal)) {
|
|
static StringData* sd___MockClass =
|
|
StringData::GetStaticString("__MockClass");
|
|
if (m_preClass->userAttributes().find(sd___MockClass) ==
|
|
m_preClass->userAttributes().end()) {
|
|
raise_error("Cannot override final method %s::%s()",
|
|
m_parent->name()->data(), parentMethod->name()->data());
|
|
}
|
|
}
|
|
|
|
if (method->attrs() & AttrAbstract) {
|
|
raise_error("Cannot re-declare %sabstract method %s::%s() abstract in "
|
|
"class %s",
|
|
(parentMethod->attrs() & AttrAbstract) ? "" : "non-",
|
|
m_parent->m_preClass->name()->data(),
|
|
parentMethod->name()->data(), m_preClass->name()->data());
|
|
}
|
|
|
|
if ((method->attrs() & (AttrPublic | AttrProtected | AttrPrivate)) >
|
|
(parentMethod->attrs() & (AttrPublic | AttrProtected | AttrPrivate))) {
|
|
raise_error(
|
|
"Access level to %s::%s() must be %s (as in class %s) or weaker",
|
|
m_preClass->name()->data(), method->name()->data(),
|
|
attrToVisibilityStr(parentMethod->attrs()),
|
|
m_parent->name()->data());
|
|
}
|
|
|
|
if ((method->attrs() & AttrStatic) != (parentMethod->attrs() & AttrStatic)) {
|
|
raise_error("Cannot change %sstatic method %s::%s() to %sstatic in %s",
|
|
(parentMethod->attrs() & AttrStatic) ? "" : "non-",
|
|
parentMethod->baseCls()->name()->data(),
|
|
method->name()->data(),
|
|
(method->attrs() & AttrStatic) ? "" : "non-",
|
|
m_preClass->name()->data());
|
|
}
|
|
|
|
Func* baseMethod = parentMethod->baseCls()->lookupMethod(method->name());
|
|
if (!(method->attrs() & AttrAbstract) &&
|
|
(baseMethod->attrs() & AttrAbstract) &&
|
|
(!hphpiCompat || strcmp(method->name()->data(), "__construct"))) {
|
|
method->parametersCompat(m_preClass.get(), baseMethod);
|
|
}
|
|
}
|
|
|
|
void Class::setMethods() {
|
|
std::vector<Slot> parentMethodsWithStaticLocals;
|
|
MethodMap::Builder builder;
|
|
|
|
if (m_parent.get() != nullptr) {
|
|
// Copy down the parent's method entries. These may be overridden below.
|
|
for (Slot i = 0; i < m_parent->m_methods.size(); ++i) {
|
|
Func* f = m_parent->m_methods[i];
|
|
assert(f);
|
|
if ((f->attrs() & AttrClone) ||
|
|
(!(f->attrs() & AttrPrivate) && f->hasStaticLocals())) {
|
|
// When copying down an entry for a non-private method that has
|
|
// static locals, we want to make a copy of the Func so that it
|
|
// gets a distinct set of static locals variables. We defer making
|
|
// a copy of the parent method until the end because it might get
|
|
// overriden below.
|
|
parentMethodsWithStaticLocals.push_back(i);
|
|
}
|
|
assert(builder.size() == i);
|
|
builder.add(f->name(), f);
|
|
}
|
|
}
|
|
|
|
assert(AttrPublic < AttrProtected && AttrProtected < AttrPrivate);
|
|
// Overlay/append this class's public/protected methods onto/to those of the
|
|
// parent.
|
|
for (size_t methI = 0; methI < m_preClass->numMethods(); ++methI) {
|
|
Func* method = m_preClass->methods()[methI];
|
|
if (Func::isSpecial(method->name())) {
|
|
if (method->name() == sd86ctor ||
|
|
method->name() == sd86sinit ||
|
|
method->name() == sd86pinit) {
|
|
/*
|
|
* we could also skip the cinit function here, but
|
|
* that would mean storing it somewhere else.
|
|
*/
|
|
continue;
|
|
}
|
|
}
|
|
MethodMap::Builder::iterator it2 = builder.find(method->name());
|
|
if (it2 != builder.end()) {
|
|
Func* parentMethod = builder[it2->second];
|
|
// We should never have null func pointers to deal with
|
|
assert(parentMethod);
|
|
methodOverrideCheck(parentMethod, method);
|
|
// Overlay.
|
|
Func* f = method->clone();
|
|
f->setNewFuncId();
|
|
f->setCls(this);
|
|
Class* baseClass;
|
|
assert(!(f->attrs() & AttrPrivate) ||
|
|
(parentMethod->attrs() & AttrPrivate));
|
|
if ((parentMethod->attrs() & AttrPrivate) || (f->attrs() & AttrPrivate)) {
|
|
baseClass = this;
|
|
} else {
|
|
baseClass = parentMethod->baseCls();
|
|
}
|
|
f->setBaseCls(baseClass);
|
|
f->setHasPrivateAncestor(
|
|
parentMethod->hasPrivateAncestor() ||
|
|
(parentMethod->attrs() & AttrPrivate));
|
|
builder[it2->second] = f;
|
|
} else {
|
|
// This is the first class that declares the method
|
|
Class* baseClass = this;
|
|
// Append.
|
|
Func* f = method->clone();
|
|
f->setNewFuncId();
|
|
f->setCls(this);
|
|
f->setBaseCls(baseClass);
|
|
f->setHasPrivateAncestor(false);
|
|
builder.add(method->name(), f);
|
|
}
|
|
}
|
|
|
|
m_traitsBeginIdx = builder.size();
|
|
if (m_usedTraits.size()) {
|
|
importTraitMethods(builder);
|
|
}
|
|
m_traitsEndIdx = builder.size();
|
|
|
|
// Make copies of Funcs inherited from the parent class that have
|
|
// static locals
|
|
std::vector<Slot>::const_iterator it;
|
|
for (it = parentMethodsWithStaticLocals.begin();
|
|
it != parentMethodsWithStaticLocals.end(); ++it) {
|
|
Func*& f = builder[*it];
|
|
if (f->cls() != this) {
|
|
// Don't update f's m_cls if it doesn't have AttrClone set:
|
|
// we're cloning it so that we get a distinct set of static
|
|
// locals and a separate translation, not a different context
|
|
// class.
|
|
f = f->clone();
|
|
if (f->attrs() & AttrClone) {
|
|
f->setCls(this);
|
|
}
|
|
f->setNewFuncId();
|
|
}
|
|
}
|
|
|
|
// If class is not abstract, check that all abstract methods have been defined
|
|
if (!(attrs() & (AttrTrait | AttrInterface | AttrAbstract))) {
|
|
for (Slot i = 0; i < builder.size(); i++) {
|
|
const Func* meth = builder[i];
|
|
if (meth->attrs() & AttrAbstract) {
|
|
raise_error("Class %s contains abstract method (%s) and "
|
|
"must therefore be declared abstract or implement "
|
|
"the remaining methods", m_preClass->name()->data(),
|
|
meth->name()->data());
|
|
}
|
|
}
|
|
}
|
|
|
|
m_methods.create(builder);
|
|
for (Slot i = 0; i < m_methods.size(); ++i) {
|
|
m_methods[i]->setMethodSlot(i);
|
|
}
|
|
}
|
|
|
|
void Class::setODAttributes() {
|
|
static StringData* sd__sleep = StringData::GetStaticString("__sleep");
|
|
static StringData* sd__get = StringData::GetStaticString("__get");
|
|
static StringData* sd__set = StringData::GetStaticString("__set");
|
|
static StringData* sd__isset = StringData::GetStaticString("__isset");
|
|
static StringData* sd__unset = StringData::GetStaticString("__unset");
|
|
static StringData* sd__call = StringData::GetStaticString("__call");
|
|
static StringData* sd__callStatic
|
|
= StringData::GetStaticString("__callStatic");
|
|
|
|
m_ODAttrs = 0;
|
|
if (lookupMethod(sd__sleep )) { m_ODAttrs |= ObjectData::HasSleep; }
|
|
if (lookupMethod(sd__get )) { m_ODAttrs |= ObjectData::UseGet; }
|
|
if (lookupMethod(sd__set )) { m_ODAttrs |= ObjectData::UseSet; }
|
|
if (lookupMethod(sd__isset )) { m_ODAttrs |= ObjectData::UseIsset; }
|
|
if (lookupMethod(sd__unset )) { m_ODAttrs |= ObjectData::UseUnset; }
|
|
if (lookupMethod(sd__call )) { m_ODAttrs |= ObjectData::HasCall; }
|
|
if (lookupMethod(sd__callStatic)) { m_ODAttrs |= ObjectData::HasCallStatic; }
|
|
}
|
|
|
|
void Class::setConstants() {
|
|
ConstMap::Builder builder;
|
|
|
|
if (m_parent.get() != nullptr) {
|
|
for (Slot i = 0; i < m_parent->m_constants.size(); ++i) {
|
|
// Copy parent's constants.
|
|
builder.add(m_parent->m_constants[i].m_name, m_parent->m_constants[i]);
|
|
}
|
|
}
|
|
|
|
// Copy in interface constants.
|
|
for (auto it = m_declInterfaces.begin(); it != m_declInterfaces.end(); ++it) {
|
|
for (Slot slot = 0; slot < (*it)->m_constants.size(); ++slot) {
|
|
const Const& iConst = (*it)->m_constants[slot];
|
|
|
|
// If you're inheriting a constant with the same name as an
|
|
// existing one, they must originate from the same place.
|
|
ConstMap::Builder::iterator existing = builder.find(iConst.m_name);
|
|
if (existing != builder.end() &&
|
|
builder[existing->second].m_class != iConst.m_class) {
|
|
raise_error("Cannot inherit previously-inherited constant %s",
|
|
iConst.m_name->data());
|
|
}
|
|
|
|
builder.add(iConst.m_name, iConst);
|
|
}
|
|
}
|
|
|
|
for (Slot i = 0, sz = m_preClass->numConstants(); i < sz; ++i) {
|
|
const PreClass::Const* preConst = &m_preClass->constants()[i];
|
|
ConstMap::Builder::iterator it2 = builder.find(preConst->name());
|
|
if (it2 != builder.end()) {
|
|
if (!(builder[it2->second].m_class->attrs() & AttrInterface)) {
|
|
// Overlay ancestor's constant, only if it was not an interface const.
|
|
builder[it2->second].m_class = this;
|
|
builder[it2->second].m_val = preConst->val();
|
|
} else {
|
|
raise_error("Cannot override previously defined constant %s::%s in %s",
|
|
builder[it2->second].m_class->name()->data(),
|
|
preConst->name()->data(),
|
|
m_preClass->name()->data());
|
|
}
|
|
} else {
|
|
// Append constant.
|
|
Const constant;
|
|
constant.m_class = this;
|
|
constant.m_name = preConst->name();
|
|
constant.m_val = preConst->val();
|
|
constant.m_phpCode = preConst->phpCode();
|
|
builder.add(preConst->name(), constant);
|
|
}
|
|
}
|
|
|
|
m_constants.create(builder);
|
|
}
|
|
|
|
static void copyDeepInitAttr(const PreClass::Prop* pclsProp,
|
|
Class::Prop* clsProp) {
|
|
if (pclsProp->attrs() & AttrDeepInit) {
|
|
clsProp->m_attrs = (Attr)(clsProp->m_attrs | AttrDeepInit);
|
|
} else {
|
|
clsProp->m_attrs = (Attr)(clsProp->m_attrs & ~AttrDeepInit);
|
|
}
|
|
}
|
|
|
|
void Class::setProperties() {
|
|
int numInaccessible = 0;
|
|
PropMap::Builder curPropMap;
|
|
SPropMap::Builder curSPropMap;
|
|
m_hasDeepInitProps = false;
|
|
|
|
if (m_parent.get() != nullptr) {
|
|
// m_hasDeepInitProps indicates if there are properties that require
|
|
// deep initialization. Note there are cases where m_hasDeepInitProps is
|
|
// true but none of the properties require deep initialization; this can
|
|
// happen if a derived class redeclares a public or protected property
|
|
// from an ancestor class. We still get correct behavior in these cases,
|
|
// so it works out okay.
|
|
m_hasDeepInitProps = m_parent->m_hasDeepInitProps;
|
|
for (Slot slot = 0; slot < m_parent->m_declProperties.size(); ++slot) {
|
|
const Prop& parentProp = m_parent->m_declProperties[slot];
|
|
|
|
// Copy parent's declared property. Protected properties may be
|
|
// weakened to public below, but otherwise, the parent's properties
|
|
// will stay the same for this class.
|
|
Prop prop;
|
|
prop.m_class = parentProp.m_class;
|
|
prop.m_mangledName = parentProp.m_mangledName;
|
|
prop.m_originalMangledName = parentProp.m_originalMangledName;
|
|
prop.m_attrs = parentProp.m_attrs;
|
|
prop.m_docComment = parentProp.m_docComment;
|
|
prop.m_typeConstraint = parentProp.m_typeConstraint;
|
|
prop.m_name = parentProp.m_name;
|
|
prop.m_hphpcType = parentProp.m_hphpcType;
|
|
if (!(parentProp.m_attrs & AttrPrivate)) {
|
|
curPropMap.add(prop.m_name, prop);
|
|
} else {
|
|
++numInaccessible;
|
|
curPropMap.addUnnamed(prop);
|
|
}
|
|
}
|
|
m_declPropInit = m_parent->m_declPropInit;
|
|
for (Slot slot = 0; slot < m_parent->m_staticProperties.size(); ++slot) {
|
|
const SProp& parentProp = m_parent->m_staticProperties[slot];
|
|
if (parentProp.m_attrs & AttrPrivate) continue;
|
|
|
|
// Alias parent's static property.
|
|
SProp sProp;
|
|
sProp.m_name = parentProp.m_name;
|
|
sProp.m_attrs = parentProp.m_attrs;
|
|
sProp.m_typeConstraint = parentProp.m_typeConstraint;
|
|
sProp.m_docComment = parentProp.m_docComment;
|
|
sProp.m_class = parentProp.m_class;
|
|
tvWriteUninit(&sProp.m_val);
|
|
curSPropMap.add(sProp.m_name, sProp);
|
|
}
|
|
}
|
|
|
|
assert(AttrPublic < AttrProtected && AttrProtected < AttrPrivate);
|
|
for (Slot slot = 0; slot < m_preClass->numProperties(); ++slot) {
|
|
const PreClass::Prop* preProp = &m_preClass->properties()[slot];
|
|
|
|
if (!(preProp->attrs() & AttrStatic)) {
|
|
// Overlay/append this class's protected and public properties onto/to
|
|
// those of the parent, and append this class's private properties.
|
|
// Append order doesn't matter here (unlike in setMethods()).
|
|
// Prohibit static-->non-static redeclaration.
|
|
SPropMap::Builder::iterator it2 = curSPropMap.find(preProp->name());
|
|
if (it2 != curSPropMap.end()) {
|
|
raise_error("Cannot redeclare static %s::$%s as non-static %s::$%s",
|
|
curSPropMap[it2->second].m_class->name()->data(),
|
|
preProp->name()->data(), m_preClass->name()->data(),
|
|
preProp->name()->data());
|
|
}
|
|
// Get parent's equivalent property, if one exists.
|
|
const Prop* parentProp = nullptr;
|
|
if (m_parent.get() != nullptr) {
|
|
Slot id = m_parent->m_declProperties.findIndex(preProp->name());
|
|
if (id != kInvalidSlot) {
|
|
parentProp = &m_parent->m_declProperties[id];
|
|
}
|
|
}
|
|
// Prohibit strengthening.
|
|
if (parentProp
|
|
&& (preProp->attrs() & (AttrPublic|AttrProtected|AttrPrivate))
|
|
> (parentProp->m_attrs & (AttrPublic|AttrProtected|AttrPrivate))) {
|
|
raise_error(
|
|
"Access level to %s::$%s() must be %s (as in class %s) or weaker",
|
|
m_preClass->name()->data(), preProp->name()->data(),
|
|
attrToVisibilityStr(parentProp->m_attrs),
|
|
m_parent->name()->data());
|
|
}
|
|
if (preProp->attrs() & AttrDeepInit) {
|
|
m_hasDeepInitProps = true;
|
|
}
|
|
switch (preProp->attrs() & (AttrPublic|AttrProtected|AttrPrivate)) {
|
|
case AttrPrivate: {
|
|
// Append a new private property.
|
|
Prop prop;
|
|
prop.m_name = preProp->name();
|
|
prop.m_mangledName = preProp->mangledName();
|
|
prop.m_originalMangledName = preProp->mangledName();
|
|
prop.m_attrs = preProp->attrs();
|
|
// This is the first class to declare this property
|
|
prop.m_class = this;
|
|
prop.m_typeConstraint = preProp->typeConstraint();
|
|
prop.m_docComment = preProp->docComment();
|
|
prop.m_hphpcType = preProp->hphpcType();
|
|
curPropMap.add(preProp->name(), prop);
|
|
m_declPropInit.push_back(m_preClass->lookupProp(preProp->name())
|
|
->val());
|
|
break;
|
|
}
|
|
case AttrProtected: {
|
|
// Check whether a superclass has already declared this protected
|
|
// property.
|
|
PropMap::Builder::iterator it2 = curPropMap.find(preProp->name());
|
|
if (it2 != curPropMap.end()) {
|
|
assert((curPropMap[it2->second].m_attrs
|
|
& (AttrPublic|AttrProtected|AttrPrivate)) == AttrProtected);
|
|
const TypedValue& tv = m_preClass->lookupProp(preProp->name())->val();
|
|
TypedValueAux& tvaux = m_declPropInit[it2->second];
|
|
tvaux.m_data = tv.m_data;
|
|
tvaux.m_type = tv.m_type;
|
|
copyDeepInitAttr(preProp, &curPropMap[it2->second]);
|
|
break;
|
|
}
|
|
// Append a new protected property.
|
|
Prop prop;
|
|
prop.m_name = preProp->name();
|
|
prop.m_mangledName = preProp->mangledName();
|
|
prop.m_originalMangledName = preProp->mangledName();
|
|
prop.m_attrs = preProp->attrs();
|
|
prop.m_typeConstraint = preProp->typeConstraint();
|
|
// This is the first class to declare this property
|
|
prop.m_class = this;
|
|
prop.m_docComment = preProp->docComment();
|
|
prop.m_hphpcType = preProp->hphpcType();
|
|
curPropMap.add(preProp->name(), prop);
|
|
m_declPropInit.push_back(m_preClass->lookupProp(preProp->name())
|
|
->val());
|
|
break;
|
|
}
|
|
case AttrPublic: {
|
|
// Check whether a superclass has already declared this as a
|
|
// protected/public property.
|
|
PropMap::Builder::iterator it2 = curPropMap.find(preProp->name());
|
|
if (it2 != curPropMap.end()) {
|
|
Prop& prop = curPropMap[it2->second];
|
|
if ((prop.m_attrs & (AttrPublic|AttrProtected|AttrPrivate))
|
|
== AttrProtected) {
|
|
// Weaken protected property to public.
|
|
prop.m_mangledName = preProp->mangledName();
|
|
prop.m_originalMangledName = preProp->mangledName();
|
|
prop.m_attrs = Attr(prop.m_attrs ^ (AttrProtected|AttrPublic));
|
|
prop.m_typeConstraint = preProp->typeConstraint();
|
|
}
|
|
const TypedValue& tv = m_preClass->lookupProp(preProp->name())->val();
|
|
TypedValueAux& tvaux = m_declPropInit[it2->second];
|
|
tvaux.m_data = tv.m_data;
|
|
tvaux.m_type = tv.m_type;
|
|
copyDeepInitAttr(preProp, &curPropMap[it2->second]);
|
|
break;
|
|
}
|
|
// Append a new public property.
|
|
Prop prop;
|
|
prop.m_name = preProp->name();
|
|
prop.m_mangledName = preProp->mangledName();
|
|
prop.m_originalMangledName = preProp->mangledName();
|
|
prop.m_attrs = preProp->attrs();
|
|
prop.m_typeConstraint = preProp->typeConstraint();
|
|
// This is the first class to declare this property
|
|
prop.m_class = this;
|
|
prop.m_docComment = preProp->docComment();
|
|
prop.m_hphpcType = preProp->hphpcType();
|
|
curPropMap.add(preProp->name(), prop);
|
|
m_declPropInit.push_back(m_preClass->lookupProp(preProp->name())
|
|
->val());
|
|
break;
|
|
}
|
|
default: assert(false);
|
|
}
|
|
} else { // Static property.
|
|
// Prohibit non-static-->static redeclaration.
|
|
PropMap::Builder::iterator it2 = curPropMap.find(preProp->name());
|
|
if (it2 != curPropMap.end()) {
|
|
// Find class that declared non-static property.
|
|
Class* ancestor;
|
|
for (ancestor = m_parent.get();
|
|
!ancestor->m_preClass->hasProp(preProp->name());
|
|
ancestor = ancestor->m_parent.get()) {
|
|
}
|
|
raise_error("Cannot redeclare non-static %s::$%s as static %s::$%s",
|
|
ancestor->name()->data(),
|
|
preProp->name()->data(),
|
|
m_preClass->name()->data(),
|
|
preProp->name()->data());
|
|
}
|
|
// Get parent's equivalent property, if one exists.
|
|
SPropMap::Builder::iterator it3 = curSPropMap.find(preProp->name());
|
|
Slot sPropInd = kInvalidSlot;
|
|
// Prohibit strengthening.
|
|
if (it3 != curSPropMap.end()) {
|
|
const SProp& parentSProp = curSPropMap[it3->second];
|
|
if ((preProp->attrs() & (AttrPublic|AttrProtected|AttrPrivate))
|
|
> (parentSProp.m_attrs & (AttrPublic|AttrProtected|AttrPrivate))) {
|
|
raise_error(
|
|
"Access level to %s::$%s() must be %s (as in class %s) or weaker",
|
|
m_preClass->name()->data(), preProp->name()->data(),
|
|
attrToVisibilityStr(parentSProp.m_attrs),
|
|
m_parent->name()->data());
|
|
}
|
|
sPropInd = it3->second;
|
|
}
|
|
// Create a new property, or overlay ancestor's property if one exists.
|
|
if (sPropInd == kInvalidSlot) {
|
|
SProp sProp;
|
|
sProp.m_name = preProp->name();
|
|
sPropInd = curSPropMap.size();
|
|
curSPropMap.add(sProp.m_name, sProp);
|
|
}
|
|
SProp& sProp = curSPropMap[sPropInd];
|
|
// Finish initializing.
|
|
sProp.m_attrs = preProp->attrs();
|
|
sProp.m_typeConstraint = preProp->typeConstraint();
|
|
sProp.m_docComment = preProp->docComment();
|
|
sProp.m_class = this;
|
|
sProp.m_val = m_preClass->lookupProp(preProp->name())->val();
|
|
}
|
|
}
|
|
|
|
importTraitProps(curPropMap, curSPropMap);
|
|
|
|
m_declProperties.create(curPropMap);
|
|
m_staticProperties.create(curSPropMap);
|
|
|
|
m_declPropNumAccessible = m_declProperties.size() - numInaccessible;
|
|
}
|
|
|
|
bool Class::compatibleTraitPropInit(TypedValue& tv1, TypedValue& tv2) {
|
|
if (tv1.m_type != tv2.m_type) return false;
|
|
switch (tv1.m_type) {
|
|
case KindOfNull: return true;
|
|
case KindOfBoolean:
|
|
case KindOfInt64:
|
|
case KindOfDouble:
|
|
case KindOfStaticString:
|
|
case KindOfString:
|
|
return same(tvAsVariant(&tv1), tvAsVariant(&tv2));
|
|
default: return false;
|
|
}
|
|
}
|
|
|
|
void Class::importTraitInstanceProp(Class* trait,
|
|
Prop& traitProp,
|
|
TypedValue& traitPropVal,
|
|
PropMap::Builder& curPropMap) {
|
|
PropMap::Builder::iterator prevIt = curPropMap.find(traitProp.m_name);
|
|
|
|
if (prevIt == curPropMap.end()) {
|
|
// New prop, go ahead and add it
|
|
Prop prop = traitProp;
|
|
prop.m_class = this; // set current class as the first declaring prop
|
|
// private props' mangled names contain the class name, so regenerate them
|
|
if (prop.m_attrs & AttrPrivate) {
|
|
prop.m_mangledName = PreClass::manglePropName(m_preClass->name(),
|
|
prop.m_name,
|
|
prop.m_attrs);
|
|
}
|
|
curPropMap.add(prop.m_name, prop);
|
|
m_declPropInit.push_back(traitPropVal);
|
|
} else {
|
|
// Redeclared prop, make sure it matches previous declarations
|
|
Prop& prevProp = curPropMap[prevIt->second];
|
|
TypedValue& prevPropVal = m_declPropInit[prevIt->second];
|
|
if (prevProp.m_attrs != traitProp.m_attrs ||
|
|
!compatibleTraitPropInit(prevPropVal, traitPropVal)) {
|
|
raise_error("trait declaration of property '%s' is incompatible with "
|
|
"previous declaration", traitProp.m_name->data());
|
|
}
|
|
}
|
|
}
|
|
|
|
void Class::importTraitStaticProp(Class* trait,
|
|
SProp& traitProp,
|
|
PropMap::Builder& curPropMap,
|
|
SPropMap::Builder& curSPropMap) {
|
|
// Check if prop already declared as non-static
|
|
if (curPropMap.find(traitProp.m_name) != curPropMap.end()) {
|
|
raise_error("trait declaration of property '%s' is incompatible with "
|
|
"previous declaration", traitProp.m_name->data());
|
|
}
|
|
|
|
SPropMap::Builder::iterator prevIt = curSPropMap.find(traitProp.m_name);
|
|
if (prevIt == curSPropMap.end()) {
|
|
// New prop, go ahead and add it
|
|
SProp prop = traitProp;
|
|
prop.m_class = this; // set current class as the first declaring prop
|
|
curSPropMap.add(prop.m_name, prop);
|
|
} else {
|
|
// Redeclared prop, make sure it matches previous declaration
|
|
SProp& prevProp = curSPropMap[prevIt->second];
|
|
TypedValue prevPropVal;
|
|
if (prevProp.m_class == this) {
|
|
// If this static property was declared by this class, we can
|
|
// get the initial value directly from m_val
|
|
prevPropVal = prevProp.m_val;
|
|
} else {
|
|
// If this static property was declared in a parent class, m_val
|
|
// will be KindOfUninit, and we'll need to consult the appropriate
|
|
// parent class to get the initial value.
|
|
prevPropVal = getStaticPropInitVal(prevProp);
|
|
}
|
|
if (prevProp.m_attrs != traitProp.m_attrs ||
|
|
!compatibleTraitPropInit(traitProp.m_val, prevPropVal)) {
|
|
raise_error("trait declaration of property '%s' is incompatible with "
|
|
"previous declaration", traitProp.m_name->data());
|
|
}
|
|
prevProp.m_class = this;
|
|
prevProp.m_val = prevPropVal;
|
|
}
|
|
}
|
|
|
|
void Class::importTraitProps(PropMap::Builder& curPropMap,
|
|
SPropMap::Builder& curSPropMap) {
|
|
if (attrs() & AttrNoExpandTrait) return;
|
|
for (auto& t : m_usedTraits) {
|
|
Class* trait = t.get();
|
|
|
|
// instance properties
|
|
for (Slot p = 0; p < trait->m_declProperties.size(); p++) {
|
|
Prop& traitProp = trait->m_declProperties[p];
|
|
TypedValue& traitPropVal = trait->m_declPropInit[p];
|
|
importTraitInstanceProp(trait, traitProp, traitPropVal,
|
|
curPropMap);
|
|
}
|
|
|
|
// static properties
|
|
for (Slot p = 0; p < trait->m_staticProperties.size(); ++p) {
|
|
SProp& traitProp = trait->m_staticProperties[p];
|
|
importTraitStaticProp(trait, traitProp, curPropMap,
|
|
curSPropMap);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Class::addTraitPropInitializers(bool staticProps) {
|
|
if (attrs() & AttrNoExpandTrait) return;
|
|
for (unsigned t = 0; t < m_usedTraits.size(); t++) {
|
|
Class* trait = m_usedTraits[t].get();
|
|
InitVec& traitInitVec = staticProps ? trait->m_sinitVec : trait->m_pinitVec;
|
|
InitVec& thisInitVec = staticProps ? m_sinitVec : m_pinitVec;
|
|
// Insert trait's 86[ps]init into the current class, avoiding repetitions.
|
|
for (unsigned m = 0; m < traitInitVec.size(); m++) {
|
|
// Linear search, but these vectors shouldn't be big.
|
|
if (find(thisInitVec.begin(), thisInitVec.end(), traitInitVec[m]) ==
|
|
thisInitVec.end()) {
|
|
thisInitVec.push_back(traitInitVec[m]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Class::setInitializers() {
|
|
if (m_parent.get() != nullptr) {
|
|
// Copy parent's 86pinit() vector, so that the 86pinit() methods can be
|
|
// called in reverse order without any search/recursion during
|
|
// initialization.
|
|
m_pinitVec = m_parent->m_pinitVec;
|
|
}
|
|
|
|
// This class only has a __[ps]init() method if it's needed. Append to the
|
|
// vectors of __[ps]init() methods, so that reverse iteration of the vectors
|
|
// runs this class's __[ps]init() first, in case multiple classes in the
|
|
// hierarchy initialize the same property.
|
|
const Func* meth86pinit = findSpecialMethod(this, sd86pinit);
|
|
if (meth86pinit != nullptr) {
|
|
m_pinitVec.push_back(meth86pinit);
|
|
}
|
|
addTraitPropInitializers(false);
|
|
const Func* sinit = findSpecialMethod(this, sd86sinit);
|
|
if (sinit) {
|
|
m_sinitVec.push_back(sinit);
|
|
}
|
|
addTraitPropInitializers(true);
|
|
|
|
m_needInitialization = (m_pinitVec.size() > 0 ||
|
|
m_staticProperties.size() > 0);
|
|
m_hasInitMethods = (m_pinitVec.size() > 0 || m_sinitVec.size() > 0);
|
|
|
|
// The __init__ method defined in the Exception class gets special treatment
|
|
static StringData* sd__init__ = StringData::GetStaticString("__init__");
|
|
static StringData* sd_exn = StringData::GetStaticString("Exception");
|
|
const Func* einit = lookupMethod(sd__init__);
|
|
m_callsCustomInstanceInit =
|
|
(einit && einit->preClass()->name()->isame(sd_exn));
|
|
}
|
|
|
|
// Checks if interface methods are OK:
|
|
// - there's no requirement if this is a trait, interface, or abstract class
|
|
// - a non-abstract class must implement all methods from interfaces it
|
|
// declares to implement (either directly or indirectly), arity must be
|
|
// compatible (at least as many parameters, additional parameters must have
|
|
// defaults), and typehints must be compatible
|
|
void Class::checkInterfaceMethods() {
|
|
for (int i = 0, size = m_interfaces.size(); i < size; i++) {
|
|
const Class* iface = m_interfaces[i];
|
|
|
|
for (size_t m = 0; m < iface->m_methods.size(); m++) {
|
|
Func* imeth = iface->m_methods[m];
|
|
const StringData* methName = imeth->name();
|
|
|
|
// Skip special methods
|
|
if (Func::isSpecial(methName)) continue;
|
|
|
|
Func* meth = lookupMethod(methName);
|
|
|
|
if (attrs() & (AttrTrait | AttrInterface | AttrAbstract)) {
|
|
if (meth == nullptr) {
|
|
// Skip unimplemented method.
|
|
continue;
|
|
}
|
|
} else {
|
|
// Verify that method is not abstract within concrete class.
|
|
if (meth == nullptr || (meth->attrs() & AttrAbstract)) {
|
|
raise_error("Class %s contains abstract method (%s) and "
|
|
"must therefore be declared abstract or implement "
|
|
"the remaining methods", name()->data(),
|
|
methName->data());
|
|
}
|
|
}
|
|
bool ifaceStaticMethod = imeth->attrs() & AttrStatic;
|
|
bool classStaticMethod = meth->attrs() & AttrStatic;
|
|
if (classStaticMethod != ifaceStaticMethod) {
|
|
raise_error("Cannot make %sstatic method %s::%s() %sstatic "
|
|
"in class %s",
|
|
ifaceStaticMethod ? "" : "non-",
|
|
iface->m_preClass->name()->data(), methName->data(),
|
|
classStaticMethod ? "" : "non-",
|
|
m_preClass->name()->data());
|
|
}
|
|
if ((imeth->attrs() & AttrPublic) &&
|
|
!(meth->attrs() & AttrPublic)) {
|
|
raise_error("Access level to %s::%s() must be public "
|
|
"(as in interface %s)", m_preClass->name()->data(),
|
|
methName->data(), iface->m_preClass->name()->data());
|
|
}
|
|
meth->parametersCompat(m_preClass.get(), imeth);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Class::setInterfaces() {
|
|
InterfaceMap::Builder interfacesBuilder;
|
|
if (m_parent.get() != nullptr) {
|
|
int size = m_parent->m_interfaces.size();
|
|
for (int i = 0; i < size; i++) {
|
|
Class* interface = m_parent->m_interfaces[i];
|
|
interfacesBuilder.add(interface->name(), interface);
|
|
}
|
|
}
|
|
for (PreClass::InterfaceVec::const_iterator it =
|
|
m_preClass->interfaces().begin();
|
|
it != m_preClass->interfaces().end(); ++it) {
|
|
Class* cp = Unit::loadClass(*it);
|
|
if (cp == nullptr) {
|
|
raise_error("Undefined interface: %s", (*it)->data());
|
|
}
|
|
if (!(cp->attrs() & AttrInterface)) {
|
|
raise_error("%s cannot implement %s - it is not an interface",
|
|
m_preClass->name()->data(), cp->name()->data());
|
|
}
|
|
m_declInterfaces.push_back(ClassPtr(cp));
|
|
if (interfacesBuilder.find(cp->name()) == interfacesBuilder.end()) {
|
|
interfacesBuilder.add(cp->name(), cp);
|
|
}
|
|
int size = cp->m_interfaces.size();
|
|
for (int i = 0; i < size; i++) {
|
|
Class* interface = cp->m_interfaces[i];
|
|
interfacesBuilder.find(interface->name());
|
|
if (interfacesBuilder.find(interface->name()) ==
|
|
interfacesBuilder.end()) {
|
|
interfacesBuilder.add(interface->name(), interface);
|
|
}
|
|
}
|
|
}
|
|
m_interfaces.create(interfacesBuilder);
|
|
checkInterfaceMethods();
|
|
}
|
|
|
|
void Class::setUsedTraits() {
|
|
for (PreClass::UsedTraitVec::const_iterator
|
|
it = m_preClass->usedTraits().begin();
|
|
it != m_preClass->usedTraits().end(); it++) {
|
|
Class* classPtr = Unit::loadClass(*it);
|
|
if (classPtr == nullptr) {
|
|
raise_error("Trait '%s' not found", (*it)->data());
|
|
}
|
|
if (!(classPtr->attrs() & AttrTrait)) {
|
|
raise_error("%s cannot use %s - it is not a trait",
|
|
m_preClass->name()->data(),
|
|
classPtr->name()->data());
|
|
}
|
|
m_usedTraits.push_back(ClassPtr(classPtr));
|
|
}
|
|
}
|
|
|
|
void Class::setClassVec() {
|
|
if (m_classVecLen > 1) {
|
|
assert(m_parent.get() != nullptr);
|
|
memcpy(m_classVec, m_parent->m_classVec,
|
|
(m_classVecLen-1) * sizeof(Class*));
|
|
}
|
|
m_classVec[m_classVecLen-1] = this;
|
|
}
|
|
|
|
void Class::setInstanceBits() {
|
|
setInstanceBitsImpl<false>();
|
|
}
|
|
void Class::setInstanceBitsAndParents() {
|
|
setInstanceBitsImpl<true>();
|
|
}
|
|
|
|
template<bool setParents>
|
|
void Class::setInstanceBitsImpl() {
|
|
// Bit 0 is reserved to indicate whether or not the rest of the bits
|
|
// are initialized yet.
|
|
if (m_instanceBits.test(0)) return;
|
|
|
|
InstanceBits bits;
|
|
bits.set(0);
|
|
auto setBits = [&](Class* c) {
|
|
if (setParents) c->setInstanceBitsAndParents();
|
|
bits |= c->m_instanceBits;
|
|
};
|
|
if (m_parent.get()) setBits(m_parent.get());
|
|
for (auto& di : m_declInterfaces) setBits(di.get());
|
|
|
|
unsigned bit;
|
|
if (mapGet(s_instanceBits, m_preClass->name(), &bit)) {
|
|
bits.set(bit);
|
|
}
|
|
m_instanceBits = bits;
|
|
}
|
|
|
|
// Finds the base class defining the given method (NULL if none).
|
|
// Note: for methods imported via traits, the base class is the one that
|
|
// uses/imports the trait.
|
|
Class* Class::findMethodBaseClass(const StringData* methName) {
|
|
const Func* f = lookupMethod(methName);
|
|
if (f == nullptr) return nullptr;
|
|
return f->baseCls();
|
|
}
|
|
|
|
void Class::getMethodNames(const Class* ctx, HphpArray* methods) const {
|
|
Func* const* pcMethods = m_preClass->methods();
|
|
for (size_t i = 0, sz = m_preClass->numMethods(); i < sz; i++) {
|
|
Func* func = pcMethods[i];
|
|
if (func->isGenerated()) continue;
|
|
if (!(func->attrs() & AttrPublic)) {
|
|
if (!ctx) continue;
|
|
if (ctx != this) {
|
|
if (func->attrs() & AttrPrivate) continue;
|
|
func = lookupMethod(func->name());
|
|
if (!ctx->classof(func->baseCls()) &&
|
|
!func->baseCls()->classof(ctx)) {
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
methods->set(const_cast<StringData*>(func->name()), true_varNR, false);
|
|
}
|
|
if (m_parent.get()) m_parent->getMethodNames(ctx, methods);
|
|
for (int i = 0, sz = m_declInterfaces.size(); i < sz; i++) {
|
|
m_declInterfaces[i]->getMethodNames(ctx, methods);
|
|
}
|
|
}
|
|
|
|
// Returns true iff this class declared the given method.
|
|
// For trait methods, the class declaring them is the one that uses/imports
|
|
// the trait.
|
|
bool Class::declaredMethod(const Func* method) {
|
|
if (method->preClass()->attrs() & AttrTrait) {
|
|
return findMethodBaseClass(method->name()) == this;
|
|
}
|
|
return method->preClass() == m_preClass.get();
|
|
}
|
|
|
|
void Class::getClassInfo(ClassInfoVM* ci) {
|
|
assert(ci);
|
|
|
|
// Miscellaneous.
|
|
Attr clsAttrs = attrs();
|
|
int attr = 0;
|
|
if (clsAttrs & AttrInterface) attr |= ClassInfo::IsInterface;
|
|
if (clsAttrs & AttrAbstract) attr |= ClassInfo::IsAbstract;
|
|
if (clsAttrs & AttrFinal) attr |= ClassInfo::IsFinal;
|
|
if (clsAttrs & AttrTrait) attr |= ClassInfo::IsTrait;
|
|
if (attr == 0) attr = ClassInfo::IsNothing;
|
|
ci->m_attribute = (ClassInfo::Attribute)attr;
|
|
|
|
ci->m_name = m_preClass->name()->data();
|
|
|
|
ci->m_file = m_preClass->unit()->filepath()->data();
|
|
ci->m_line1 = m_preClass->line1();
|
|
ci->m_line2 = m_preClass->line2();
|
|
ci->m_docComment = (m_preClass->docComment() != nullptr)
|
|
? m_preClass->docComment()->data() : "";
|
|
|
|
// Parent class.
|
|
if (m_parent.get()) {
|
|
ci->m_parentClass = m_parent->name()->data();
|
|
} else {
|
|
ci->m_parentClass = "";
|
|
}
|
|
|
|
// Interfaces.
|
|
for (unsigned i = 0; i < m_declInterfaces.size(); i++) {
|
|
ci->m_interfacesVec.push_back(
|
|
m_declInterfaces[i]->name()->data());
|
|
ci->m_interfaces.insert(
|
|
m_declInterfaces[i]->name()->data());
|
|
}
|
|
|
|
// Used traits.
|
|
for (unsigned t = 0; t < m_usedTraits.size(); t++) {
|
|
const char* traitName = m_usedTraits[t]->name()->data();
|
|
ci->m_traitsVec.push_back(traitName);
|
|
ci->m_traits.insert(traitName);
|
|
}
|
|
|
|
// Trait aliases.
|
|
for (unsigned a = 0; a < m_traitAliases.size(); a++) {
|
|
ci->m_traitAliasesVec.push_back(std::pair<String, String>
|
|
(m_traitAliases[a].first->data(),
|
|
m_traitAliases[a].second->data()));
|
|
}
|
|
|
|
#define SET_FUNCINFO_BODY \
|
|
ClassInfo::MethodInfo *m = new ClassInfo::MethodInfo; \
|
|
func->getFuncInfo(m); \
|
|
ci->m_methods[func->name()->data()] = m; \
|
|
ci->m_methodsVec.push_back(m);
|
|
|
|
// Methods: in source order (from our PreClass), then traits.
|
|
for (size_t i = 0; i < m_preClass->numMethods(); ++i) {
|
|
Func* func = lookupMethod(m_preClass->methods()[i]->name());
|
|
// Filter out special methods
|
|
if (!func) {
|
|
DEBUG_ONLY const StringData* name = m_preClass->methods()[i]->name();
|
|
assert(!strcmp(name->data(), "86ctor"));
|
|
continue;
|
|
}
|
|
if (func->isGenerated()) continue;
|
|
assert(func);
|
|
assert(declaredMethod(func));
|
|
SET_FUNCINFO_BODY;
|
|
}
|
|
|
|
for (Slot i = m_traitsBeginIdx; i < m_traitsEndIdx; ++i) {
|
|
Func* func = m_methods[i];
|
|
assert(func);
|
|
if (!func->isGenerated()) {
|
|
SET_FUNCINFO_BODY;
|
|
}
|
|
}
|
|
#undef SET_FUNCINFO_BODY
|
|
|
|
// Properties.
|
|
for (Slot i = 0; i < m_declProperties.size(); ++i) {
|
|
if (m_declProperties[i].m_class != this) continue;
|
|
ClassInfo::PropertyInfo *pi = new ClassInfo::PropertyInfo;
|
|
pi->owner = ci;
|
|
pi->name = m_declProperties[i].m_name->data();
|
|
Attr propAttrs = m_declProperties[i].m_attrs;
|
|
attr = 0;
|
|
if (propAttrs & AttrProtected) attr |= ClassInfo::IsProtected;
|
|
if (propAttrs & AttrPrivate) attr |= ClassInfo::IsPrivate;
|
|
if (attr == 0) attr |= ClassInfo::IsPublic;
|
|
if (propAttrs & AttrStatic) attr |= ClassInfo::IsStatic;
|
|
pi->attribute = (ClassInfo::Attribute)attr;
|
|
pi->docComment = (m_declProperties[i].m_docComment != nullptr)
|
|
? m_declProperties[i].m_docComment->data() : "";
|
|
|
|
ci->m_properties[pi->name] = pi;
|
|
ci->m_propertiesVec.push_back(pi);
|
|
}
|
|
|
|
for (Slot i = 0; i < m_staticProperties.size(); ++i) {
|
|
if (m_staticProperties[i].m_class != this) continue;
|
|
ClassInfo::PropertyInfo *pi = new ClassInfo::PropertyInfo;
|
|
pi->owner = ci;
|
|
pi->name = m_staticProperties[i].m_name->data();
|
|
Attr propAttrs = m_staticProperties[i].m_attrs;
|
|
attr = 0;
|
|
if (propAttrs & AttrProtected) attr |= ClassInfo::IsProtected;
|
|
if (propAttrs & AttrPrivate) attr |= ClassInfo::IsPrivate;
|
|
if (attr == 0) attr |= ClassInfo::IsPublic;
|
|
if (propAttrs & AttrStatic) attr |= ClassInfo::IsStatic;
|
|
pi->attribute = (ClassInfo::Attribute)attr;
|
|
pi->docComment = (m_staticProperties[i].m_docComment != nullptr)
|
|
? m_staticProperties[i].m_docComment->data() : "";
|
|
|
|
ci->m_properties[pi->name] = pi;
|
|
ci->m_propertiesVec.push_back(pi);
|
|
}
|
|
|
|
// Constants.
|
|
for (Slot i = 0; i < m_constants.size(); ++i) {
|
|
// Only include constants declared on this class
|
|
if (m_constants[i].m_class != this) continue;
|
|
|
|
ClassInfo::ConstantInfo *ki = new ClassInfo::ConstantInfo;
|
|
ki->name = m_constants[i].m_name->data();
|
|
ki->valueLen = m_constants[i].m_phpCode->size();
|
|
ki->valueText = m_constants[i].m_phpCode->data();
|
|
ki->setValue(tvAsCVarRef(clsCnsGet(m_constants[i].m_name)));
|
|
|
|
ci->m_constants[ki->name] = ki;
|
|
ci->m_constantsVec.push_back(ki);
|
|
}
|
|
}
|
|
|
|
size_t Class::declPropOffset(Slot index) const {
|
|
assert(index >= 0);
|
|
return sizeof(ObjectData) + m_builtinPropSize
|
|
+ index * sizeof(TypedValue);
|
|
}
|
|
|
|
Class::PropInitVec::~PropInitVec() {
|
|
if (!m_smart) free(m_data);
|
|
}
|
|
|
|
Class::PropInitVec::PropInitVec() : m_data(nullptr), m_size(0), m_smart(false) {}
|
|
|
|
Class::PropInitVec*
|
|
Class::PropInitVec::allocInRequestArena(const PropInitVec& src) {
|
|
ThreadInfo* info UNUSED = ThreadInfo::s_threadInfo.getNoCheck();
|
|
PropInitVec* p = new (request_arena()) PropInitVec;
|
|
p->m_size = src.size();
|
|
p->m_data = new (request_arena()) TypedValueAux[src.size()];
|
|
memcpy(p->m_data, src.m_data, src.size() * sizeof(*p->m_data));
|
|
p->m_smart = true;
|
|
return p;
|
|
}
|
|
|
|
const Class::PropInitVec&
|
|
Class::PropInitVec::operator=(const PropInitVec& piv) {
|
|
assert(!m_smart);
|
|
if (this != &piv) {
|
|
unsigned sz = m_size = piv.size();
|
|
if (sz) sz = Util::roundUpToPowerOfTwo(sz);
|
|
free(m_data);
|
|
m_data = (TypedValueAux*)malloc(sz * sizeof(*m_data));
|
|
assert(m_data);
|
|
memcpy(m_data, piv.m_data, piv.size() * sizeof(*m_data));
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
void Class::PropInitVec::push_back(const TypedValue& v) {
|
|
assert(!m_smart);
|
|
/*
|
|
* the allocated size is always the next power of two (or zero)
|
|
* so we just need to reallocate when we hit a power of two
|
|
*/
|
|
if (!m_size || Util::isPowerOfTwo(m_size)) {
|
|
unsigned size = m_size ? m_size * 2 : 1;
|
|
m_data = (TypedValueAux*)realloc(m_data, size * sizeof(*m_data));
|
|
assert(m_data);
|
|
}
|
|
tvDup(v, m_data[m_size++]);
|
|
}
|
|
|
|
using Transl::TargetCache::handleToRef;
|
|
|
|
const Class::PropInitVec* Class::getPropData() const {
|
|
if (m_propDataCache == (unsigned)-1) return nullptr;
|
|
return handleToRef<PropInitVec*>(m_propDataCache);
|
|
}
|
|
|
|
void Class::initPropHandle() const {
|
|
if (UNLIKELY(m_propDataCache == (unsigned)-1)) {
|
|
const_cast<unsigned&>(m_propDataCache) =
|
|
Transl::TargetCache::allocClassInitProp(name());
|
|
}
|
|
}
|
|
|
|
void Class::initProps() const {
|
|
setPropData(initPropsImpl());
|
|
}
|
|
|
|
void Class::setPropData(PropInitVec* propData) const {
|
|
assert(getPropData() == nullptr);
|
|
initPropHandle();
|
|
handleToRef<PropInitVec*>(m_propDataCache) = propData;
|
|
}
|
|
|
|
TypedValue* Class::getSPropData() const {
|
|
if (m_propSDataCache == (unsigned)-1) return nullptr;
|
|
return handleToRef<TypedValue*>(m_propSDataCache);
|
|
}
|
|
|
|
void Class::initSPropHandle() const {
|
|
if (UNLIKELY(m_propSDataCache == (unsigned)-1)) {
|
|
const_cast<unsigned&>(m_propSDataCache) =
|
|
Transl::TargetCache::allocClassInitSProp(name());
|
|
}
|
|
}
|
|
|
|
TypedValue* Class::initSProps() const {
|
|
TypedValue* sprops = initSPropsImpl();
|
|
setSPropData(sprops);
|
|
return sprops;
|
|
}
|
|
|
|
void Class::setSPropData(TypedValue* sPropData) const {
|
|
assert(getSPropData() == nullptr);
|
|
initSPropHandle();
|
|
handleToRef<TypedValue*>(m_propSDataCache) = sPropData;
|
|
}
|
|
|
|
void Class::getChildren(std::vector<TypedValue *> &out) {
|
|
for (Slot i = 0; i < m_staticProperties.size(); ++i) {
|
|
if (m_staticProperties[i].m_class != this) continue;
|
|
out.push_back(&m_staticProperties[i].m_val);
|
|
}
|
|
}
|
|
|
|
} // HPHP::VM
|