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/*
* Copyright (C) 2008, 2009 Nokia Corporation.
*
* Contact: Marius Vollmer <marius.vollmer@nokia.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include "contexttypeinfo.h"
#include "logging.h"
#include "loggingfeatures.h"
#include "contexttyperegistryinfo.h"
/* Public */
/* The AssocTree in a ContextTypeInfo corresponds directly to what has
been written in the property declarations. For example, a property
declaration of this form
<key name="Foo.Bar"
type="string"/>
will yield a ContextTypeInfo with this tree:
"string"
while this declaration
<key name="Foo.Bar">
<type>
<string-enum>
<foo/>
<bar/>
</string-enum>
</type>
</key>
yields this tree
[ "string-enum", [ "foo" ], [ "bar" ] ]
The first element in this list is the name of the type, the rest of
the list are the parameters.
The first form of just "string" is short-hand for [ "string" ],
i.e., you can use it when the list of parameters is empty.
*/
/// Returns a ContexTypeInfo where old-style type names (INTEGER,
/// STRING, BOOL) are replaced with new-style type names (integer,
/// string, bool). Returns self if the ContextTypeInfo is already
/// new-style.
ContextTypeInfo ContextTypeInfo::ensureNewTypes()
{
QString newName;
QString oldName = name();
if (oldName == "TRUTH")
newName = "bool";
else if (oldName == "INT" || oldName == "INTEGER")
newName = "integer";
else if (oldName == "STRING")
newName = "string";
else if (oldName == "DOUBLE")
newName = "number";
else
return *this;
return ContextTypeInfo(QVariant(newName));
}
/// Verifies if \a value is acceptable as a representative of the type that
/// this ContextTypeInfo object describes.
bool ContextTypeInfo::typeCheck(const QVariant &value) const
{
QString me = name();
// First check against the parametrized base type.
ContextTypeInfo baseType(base());
if (!baseType.isNull()) {
// Combine type instance parameters with default parameters of the
// base type. (Suboptimal.)
if (baseType.type() != QVariant::List)
baseType = AssocTree(QVariantList() << baseType.name());
foreach (AssocTree p, parameters()) {
baseType = baseType.filterOut(p.name());
baseType = AssocTree(baseType.toList() << p);
}
if (!baseType.typeCheck(value))
return false;
}
// Now let's see our hardwired knowledge about our types.
QVariant::Type vtype = value.type();
if (me == "value") {
return true;
}
else if (me == "bool") {
bool ok = vtype == QVariant::Bool;
if (!ok)
contextWarning() << F_TYPES << value << "is not a bool";
return ok;
}
else if (me == "number") {
if (!value.canConvert(QVariant::Double)) {
contextWarning() << F_TYPES << value << "is not a number";
return false;
}
QVariant min = parameterValue("min");
QVariant max = parameterValue("max");
double v = value.toDouble();
if (!min.isNull() && v < min.toDouble()) {
contextWarning() << F_TYPES << v << "below minimum:" << min.toDouble();
return false;
}
if (!max.isNull() && max.toDouble() < v) {
contextWarning() << F_TYPES << v << "above maximum:" << max.toDouble();
return false;
}
return true;
}
else if (me == "integer") {
bool ok = (vtype == QVariant::Int ||
vtype == QVariant::UInt ||
vtype == QVariant::LongLong ||
vtype == QVariant::ULongLong);
if (!ok)
contextWarning() << F_TYPES << value << "is not an integer type";
return ok;
}
else if (me == "string") {
bool ok = vtype == QVariant::String;
if (!ok)
contextWarning() << F_TYPES << value << "is not a string";
return ok;
}
else if (me == "list") {
if (vtype != QVariant::List) {
contextWarning() << F_TYPES << value << "is not a list";
return false;
}
QVariant minlen = parameterValue("min");
QVariant maxlen = parameterValue("max");
ContextTypeInfo eltype = parameterValue("type");
QVariantList vl = value.toList();
if (!minlen.isNull() && vl.size() < minlen.toInt()) {
contextWarning() << F_TYPES << value << "shorter than minimum";
return false;
}
if (!maxlen.isNull() && vl.size() > maxlen.toInt()) {
contextWarning() << F_TYPES << value << "length over maximum";
return false;
}
if (!eltype.isNull())
foreach (QVariant el, vl)
if (!eltype.typeCheck(el)) {
contextWarning() << F_TYPES << "element" << el
<< "is of incorrect type";
return false;
}
return true;
}
else if (me == "map") {
if (vtype != QVariant::Map) {
contextWarning() << F_TYPES << value << "is not a map";
return false;
}
QHash<QString, ContextTypeInfo> allowedKeys;
bool othersAllowed = false;
foreach (ContextTypeInfo keyInfo, parameters()) {
QString keyname = keyInfo.name();
if (keyname == "allow-other-keys") {
othersAllowed = true;
continue;
}
allowedKeys.insert(keyname, keyInfo.parameterValue("type"));
}
if (allowedKeys.size() == 0)
return true;
QMapIterator<QString, QVariant> it(value.toMap());
while (it.hasNext()) {
it.next();
QString key = it.key();
if (allowedKeys.contains(key)) {
if (allowedKeys[key].isNull())
continue;
if (!allowedKeys[key].typeCheck(it.value())) {
contextWarning() << F_TYPES << "value for" << key
<< "(" << it.value() << ")"
<< "is of incorrect type";
return false;
}
} else if (!othersAllowed) {
contextWarning() << F_TYPES << "unknown key" << key;
return false;
}
}
return true;
}
else if (me == "string-enum") {
QSet<QString> enumerators;
foreach (AssocTree enumerator, parameters())
enumerators.insert(enumerator.name());
bool ok = enumerators.contains(value.toString());
if (!ok)
contextWarning() << F_TYPES
<< value << "is not valid in this string-enum";
return ok;
}
else if (me == "int-enum") {
QSet<int> enumerators;
foreach (AssocTree enumerator, parameters())
enumerators.insert(enumerator.value("value").toInt());
bool ok = enumerators.contains(value.toInt());
if (!ok)
contextWarning() << F_TYPES << value << "is not valid in this int-enum";
return ok;
}
return true;
}
/// Returns the AssocTree with the type definition for this type.
AssocTree ContextTypeInfo::definition() const
{
return ContextTypeRegistryInfo::instance()->typeDefinitionForName(name());
}
/* ContextStringEnumInfo
*/
QStringList ContextStringEnumInfo::choices() const
{
QStringList result;
foreach (const AssocTree &p, parameters()) {
result.append (p.name());
}
return result;
}
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