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Diffstat (limited to 'src/script/qscriptvalueimpl.cpp')
| -rw-r--r-- | src/script/qscriptvalueimpl.cpp | 450 |
1 files changed, 0 insertions, 450 deletions
diff --git a/src/script/qscriptvalueimpl.cpp b/src/script/qscriptvalueimpl.cpp deleted file mode 100644 index 58fb36364..000000000 --- a/src/script/qscriptvalueimpl.cpp +++ /dev/null @@ -1,450 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtScript module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** No Commercial Usage -** This file contains pre-release code and may not be distributed. -** You may use this file in accordance with the terms and conditions -** contained in the either Technology Preview License Agreement or the -** Beta Release License Agreement. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain -** additional rights. These rights are described in the Nokia Qt LGPL -** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this -** package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 3.0 as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU General Public License version 3.0 requirements will be -** met: http://www.gnu.org/copyleft/gpl.html. -** -** If you are unsure which license is appropriate for your use, please -** contact the sales department at http://qt.nokia.com/contact. -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qscriptvalueimpl_p.h" - -#ifndef QT_NO_SCRIPT - -#include "qscriptengine_p.h" -#include "qscriptvalueimpl_p.h" -#include "qscriptcontext_p.h" -#include "qscriptmember_p.h" -#include "qscriptobject_p.h" - -QT_BEGIN_NAMESPACE - -static void dfs(QScriptObject *instance, QHash<QScriptObject*, int> &dfn, int n) -{ - bool found = dfn.contains(instance); - dfn[instance] = n; - - if (found) - return; - - if (instance->m_prototype.isObject()) - dfs (instance->m_prototype.m_object_value, dfn, n + 1); - - if (instance->m_scope.isObject()) - dfs (instance->m_scope.m_object_value, dfn, n + 1); -} - - -static bool checkCycle(QScriptObject *instance, const QHash<QScriptObject*, int> &dfn) -{ - int n = dfn.value(instance); - - if (instance->m_prototype.isObject()) { - if (n >= dfn.value(instance->m_prototype.m_object_value)) - return true; - } - - if (instance->m_scope.isObject()) { - if (n >= dfn.value(instance->m_scope.m_object_value)) - return true; - } - - return false; -} - -bool QScriptValueImpl::detectedCycle() const -{ - QHash<QScriptObject*, int> dfn; - dfs(m_object_value, dfn, 0); - return checkCycle(m_object_value, dfn); -} - -bool QScriptValueImpl::instanceOf(const QScriptValueImpl &value) const -{ - if (! isObject() || ! value.isObject() || !value.implementsHasInstance()) - return false; - return value.hasInstance(*this); -} - -bool QScriptValueImpl::implementsHasInstance() const -{ - Q_ASSERT(isObject()); - if (isFunction()) - return true; - if (QScriptClassData *odata = classInfo()->data()) { - return odata->implementsHasInstance(*this); - } - return false; -} - -bool QScriptValueImpl::hasInstance(const QScriptValueImpl &value) const -{ - Q_ASSERT(isObject()); - - if (QScriptClassData *odata = classInfo()->data()) { - if (odata->implementsHasInstance(*this)) - return odata->hasInstance(*this, value); - } - if (!isFunction()) - return false; - - // [[HasInstance] for function objects - - if (!value.isObject()) - return false; - - QScriptEnginePrivate *eng = engine(); - QScriptValueImpl proto = property(eng->idTable()->id_prototype); - if (!proto.isObject()) { - QScriptContextPrivate *ctx = eng->currentContext(); - ctx->throwTypeError(QLatin1String("instanceof: 'prototype' property is not an object")); - return false; - } - - QScriptObject *target = proto.m_object_value; - QScriptValueImpl v = value; - while (true) { - v = v.prototype(); - if (!v.isObject()) - break; - if (target == v.m_object_value) - return true; - } - return false; -} - -bool QScriptValueImpl::resolve_helper(QScriptNameIdImpl *nameId, QScript::Member *member, - QScriptValueImpl *object, QScriptValue::ResolveFlags mode, - QScript::AccessMode access) const -{ - QScriptObject *object_data = m_object_value; - - QScriptEnginePrivate *eng_p = engine(); - - if (nameId == eng_p->idTable()->id___proto__) { - member->native(nameId, /*id=*/0, QScriptValue::Undeletable); - *object = *this; - return true; - } - - // If not found anywhere else, search in the extra members. - if (QScriptClassData *odata = classInfo()->data()) { - *object = *this; - - if (odata->resolve(*this, nameId, member, object, access)) - return true; - } - - if (mode & QScriptValue::ResolvePrototype) { - // For values and other non object based types, search in class's prototype - const QScriptValueImpl &proto = object_data->m_prototype; - - if (proto.isObject() - && proto.resolve(nameId, member, object, mode, access)) { - return true; - } - } - - if ((mode & QScriptValue::ResolveScope) && object_data->m_scope.isValid()) - return object_data->m_scope.resolve(nameId, member, object, mode, access); - - return false; -} - -void QScriptValueImpl::setProperty(QScriptNameIdImpl *nameId, - const QScriptValueImpl &value, - const QScriptValue::PropertyFlags &flags) -{ - if (!isObject()) - return; - - QScriptValueImpl base; - QScript::Member member; - - QScriptValue::ResolveFlags mode = QScriptValue::ResolveLocal; - // if we are not setting a setter or getter, look in prototype too - if (!(flags & (QScriptValue::PropertyGetter | QScriptValue::PropertySetter))) - mode |= QScriptValue::ResolvePrototype; - - if (resolve(nameId, &member, &base, mode, QScript::ReadWrite)) { - // we resolved an existing property with that name - if (flags & (QScriptValue::PropertyGetter | QScriptValue::PropertySetter)) { - // setting the getter or setter of a property in this object - if (member.isNativeProperty()) { - if (value.isValid()) { - qWarning("QScriptValue::setProperty() failed: " - "cannot set getter or setter of native property `%s'", - qPrintable(nameId->s)); - } - return; - } - if (member.isSetter()) { - // the property we resolved is a setter - if (!(flags & QScriptValue::PropertySetter) && !member.isGetter()) { - // find the getter, if not, create one - if (!m_object_value->findGetter(&member)) { - if (!value.isValid()) - return; // don't create property for invalid value - createMember(nameId, &member, flags); - } - } - } else if (member.isGetter()) { - // the property we resolved is a getter - if (!(flags & QScriptValue::PropertyGetter)) { - // find the setter, if not, create one - if (!m_object_value->findSetter(&member)) { - if (!value.isValid()) - return; // don't create property for invalid value - createMember(nameId, &member, flags); - } - } - } else { - // the property is a normal property -- change the flags - uint newFlags = flags & ~QScript::Member::InternalRange; - newFlags |= QScript::Member::ObjectProperty; - member.resetFlags(newFlags); - base.m_object_value->m_members[member.id()].resetFlags(newFlags); - } - Q_ASSERT(member.isValid()); - if (!value.isValid()) { - // remove the property - removeMember(member); - return; - } - } else { - // setting the value - if (member.isGetterOrSetter()) { - // call the setter - QScriptValueImpl setter; - if (member.isObjectProperty() && !member.isSetter()) { - if (!base.m_object_value->findSetter(&member)) { - qWarning("QScriptValue::setProperty() failed: " - "property '%s' has a getter but no setter", - qPrintable(nameId->s)); - return; - } - } - base.get(member, &setter); - setter.call(*this, QScriptValueImplList() << value); - return; - } else { - if (base.m_object_value != m_object_value) { - if (!value.isValid()) - return; // don't create property for invalid value - createMember(nameId, &member, flags); - base = *this; - } else { - if (!value.isValid()) { - // remove the property - removeMember(member); - return; - } - } - if (flags != QScriptValue::KeepExistingFlags) { - // change flags - if (member.isNativeProperty()) { - qWarning("QScriptValue::setProperty(%s): " - "cannot change flags of a native property", - qPrintable(nameId->s)); - } else { - uint newFlags = member.flags() & QScript::Member::InternalRange; - newFlags |= flags & ~QScript::Member::InternalRange; - base.m_object_value->m_members[member.id()].resetFlags(newFlags); - } - } - } - } - } else { - // property does not exist - if (!value.isValid()) - return; // don't create property for invalid value - createMember(nameId, &member, flags & ~QScript::Member::InternalRange); - base = *this; - } - - base.put(member, value); -} - -QVariant QScriptValueImpl::toVariant() const -{ - switch (m_type) { - case QScript::InvalidType: - return QVariant(); - - case QScript::UndefinedType: - case QScript::NullType: - case QScript::PointerType: - case QScript::ReferenceType: - break; - - case QScript::BooleanType: - return QVariant(m_bool_value); - - case QScript::IntegerType: - return QVariant(m_int_value); - - case QScript::NumberType: - return QVariant(m_number_value); - - case QScript::StringType: - return QVariant(m_string_value->s); - - case QScript::LazyStringType: - return QVariant(*m_lazy_string_value); - - case QScript::ObjectType: - if (isDate()) - return QVariant(toDateTime()); - -#ifndef QT_NO_REGEXP - if (isRegExp()) - return QVariant(toRegExp()); -#endif - if (isVariant()) - return variantValue(); - -#ifndef QT_NO_QOBJECT - if (isQObject()) - return qVariantFromValue(toQObject()); -#endif - if (isArray()) - return QScriptEnginePrivate::variantListFromArray(*this); - - QScriptValueImpl v = engine()->toPrimitive(*this); - if (!v.isObject()) - return v.toVariant(); - break; - } // switch - return QVariant(); -} - -QDebug &operator<<(QDebug &d, const QScriptValueImpl &object) -{ - d.nospace() << "QScriptValue("; - - switch (object.type()) { - case QScript::InvalidType: - d.nospace() << "Invalid)"; - return d; - - case QScript::BooleanType: - d.nospace() << "bool=" << object.toBoolean(); - break; - - case QScript::IntegerType: - d.nospace() << "int=" << object.toInt32(); - break; - - case QScript::NumberType: - d.nospace() << "qsreal=" << object.toNumber(); - break; - - case QScript::LazyStringType: - case QScript::StringType: - d.nospace() << "string=" << object.toString(); - break; - - case QScript::ReferenceType: - d.nospace() << "reference"; - break; - - case QScript::NullType: - d.nospace() << "null"; - break; - - case QScript::UndefinedType: - d.nospace() << "undefined"; - break; - - case QScript::PointerType: - d.nospace() << "pointer"; - break; - - case QScript::ObjectType: - d.nospace() << object.classInfo()->name() << ",{"; - QScriptObject *od = object.objectValue(); - for (int i=0; i<od->memberCount(); ++i) { - if (i != 0) - d << ','; - - QScript::Member m; - od->member(i, &m); - - if (m.isValid() && m.isObjectProperty()) { - d << object.engine()->toString(m.nameId()); - QScriptValueImpl o; - od->get(m, &o); - d.nospace() << QLatin1Char(':') - << (o.classInfo() - ? o.classInfo()->name() - : QLatin1String("?")); - } - } - - d.nospace() << "} scope={"; - QScriptValueImpl scope = object.scope(); - while (scope.isValid()) { - Q_ASSERT(scope.isObject()); - d.nospace() << ' ' << scope.objectValue(); - scope = scope.scope(); - } - d.nospace() << '}'; - break; - } - - d << ')'; - return d; -} - -void QScriptValueImpl::destroyObjectData() -{ - Q_ASSERT(isObject()); - m_object_value->finalizeData(); -} - -bool QScriptValueImpl::isMarked(int generation) const -{ - if (isString()) - return (m_string_value->used != 0); - else if (isObject()) { - QScript::GCBlock *block = QScript::GCBlock::get(m_object_value); - return (block->generation == generation); - } - return false; -} - -QT_END_NAMESPACE - -#endif // QT_NO_SCRIPT |