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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qv4compileddata_p.h"
#include "qv4jsir_p.h"
#include <private/qv4engine_p.h>
#include <private/qv4function_p.h>
#include <private/qv4objectproto_p.h>
#include <private/qv4lookup_p.h>
#include <private/qv4regexpobject_p.h>
#include <algorithm>
QT_BEGIN_NAMESPACE
namespace QV4 {
namespace CompiledData {
CompilationUnit::~CompilationUnit()
{
unlink();
}
QV4::Function *CompilationUnit::linkToEngine(ExecutionEngine *engine)
{
this->engine = engine;
engine->compilationUnits.insert(this);
assert(!runtimeStrings);
assert(data);
runtimeStrings = (QV4::SafeString *)malloc(data->stringTableSize * sizeof(QV4::SafeString));
// memset the strings to 0 in case a GC run happens while we're within the loop below
memset(runtimeStrings, 0, data->stringTableSize * sizeof(QV4::SafeString));
for (uint i = 0; i < data->stringTableSize; ++i)
runtimeStrings[i] = engine->newIdentifier(data->stringAt(i));
runtimeRegularExpressions = new QV4::SafeValue[data->regexpTableSize];
// memset the regexps to 0 in case a GC run happens while we're within the loop below
memset(runtimeRegularExpressions, 0, data->regexpTableSize * sizeof(QV4::SafeValue));
for (uint i = 0; i < data->regexpTableSize; ++i) {
const CompiledData::RegExp *re = data->regexpAt(i);
int flags = 0;
if (re->flags & CompiledData::RegExp::RegExp_Global)
flags |= QQmlJS::V4IR::RegExp::RegExp_Global;
if (re->flags & CompiledData::RegExp::RegExp_IgnoreCase)
flags |= QQmlJS::V4IR::RegExp::RegExp_IgnoreCase;
if (re->flags & CompiledData::RegExp::RegExp_Multiline)
flags |= QQmlJS::V4IR::RegExp::RegExp_Multiline;
runtimeRegularExpressions[i] = engine->newRegExpObject(data->stringAt(re->stringIndex), flags);
}
if (data->lookupTableSize) {
runtimeLookups = new QV4::Lookup[data->lookupTableSize];
memset(runtimeLookups, 0, data->lookupTableSize * sizeof(QV4::Lookup));
const CompiledData::Lookup *compiledLookups = data->lookupTable();
for (uint i = 0; i < data->lookupTableSize; ++i) {
QV4::Lookup *l = runtimeLookups + i;
if (compiledLookups[i].type_and_flags == CompiledData::Lookup::Type_Getter)
l->getter = QV4::Lookup::getterGeneric;
else if (compiledLookups[i].type_and_flags == CompiledData::Lookup::Type_Setter)
l->setter = QV4::Lookup::setterGeneric;
else if (compiledLookups[i].type_and_flags == CompiledData::Lookup::Type_GlobalGetter)
l->globalGetter = QV4::Lookup::globalGetterGeneric;
for (int j = 0; j < QV4::Lookup::Size; ++j)
l->classList[j] = 0;
l->level = -1;
l->index = UINT_MAX;
l->name = runtimeStrings[compiledLookups[i].nameIndex].asString();
}
}
if (data->jsClassTableSize) {
runtimeClasses = (QV4::InternalClass**)malloc(data->jsClassTableSize * sizeof(QV4::InternalClass*));
for (uint i = 0; i < data->jsClassTableSize; ++i) {
int memberCount = 0;
const CompiledData::JSClassMember *member = data->jsClassAt(i, &memberCount);
QV4::InternalClass *klass = engine->objectClass;
for (int j = 0; j < memberCount; ++j, ++member)
klass = klass->addMember(runtimeStrings[member->nameOffset].asString(), member->isAccessor ? QV4::Attr_Accessor : QV4::Attr_Data);
runtimeClasses[i] = klass;
}
}
linkBackendToEngine(engine);
#if 0
runtimeFunctionsSortedByAddress.resize(runtimeFunctions.size());
memcpy(runtimeFunctionsSortedByAddress.data(), runtimeFunctions.data(), runtimeFunctions.size() * sizeof(QV4::Function*));
std::sort(runtimeFunctionsSortedByAddress.begin(), runtimeFunctionsSortedByAddress.end(), functionSortHelper);
#endif
if (data->indexOfRootFunction != -1)
return runtimeFunctions[data->indexOfRootFunction];
else
return 0;
}
void CompilationUnit::unlink()
{
if (engine)
engine->compilationUnits.erase(engine->compilationUnits.find(this));
engine = 0;
if (ownsData)
free(data);
data = 0;
free(runtimeStrings);
runtimeStrings = 0;
delete [] runtimeLookups;
runtimeLookups = 0;
delete [] runtimeRegularExpressions;
runtimeRegularExpressions = 0;
free(runtimeClasses);
runtimeClasses = 0;
qDeleteAll(runtimeFunctions);
runtimeFunctions.clear();
}
void CompilationUnit::markObjects(QV4::ExecutionEngine *e)
{
for (uint i = 0; i < data->stringTableSize; ++i)
runtimeStrings[i].mark(e);
if (runtimeRegularExpressions) {
for (uint i = 0; i < data->regexpTableSize; ++i)
runtimeRegularExpressions[i].mark(e);
}
for (int i = 0; i < runtimeFunctions.count(); ++i)
if (runtimeFunctions[i])
runtimeFunctions[i]->mark(e);
if (runtimeLookups) {
for (uint i = 0; i < data->lookupTableSize; ++i)
runtimeLookups[i].name->mark(e);
}
}
QString Binding::valueAsString(const Unit *unit) const
{
switch (type) {
case Type_Script:
case Type_String:
return unit->stringAt(stringIndex);
case Type_Boolean:
return value.b ? QStringLiteral("true") : QStringLiteral("false");
case Type_Number:
return QString::number(value.d);
case Type_Invalid:
return QString();
default:
break;
}
return QString();
}
//reverse of Lexer::singleEscape()
static QString escapedString(const QString &string)
{
QString tmp = QLatin1String("\"");
for (int i = 0; i < string.length(); ++i) {
const QChar &c = string.at(i);
switch (c.unicode()) {
case 0x08:
tmp += QLatin1String("\\b");
break;
case 0x09:
tmp += QLatin1String("\\t");
break;
case 0x0A:
tmp += QLatin1String("\\n");
break;
case 0x0B:
tmp += QLatin1String("\\v");
break;
case 0x0C:
tmp += QLatin1String("\\f");
break;
case 0x0D:
tmp += QLatin1String("\\r");
break;
case 0x22:
tmp += QLatin1String("\\\"");
break;
case 0x27:
tmp += QLatin1String("\\\'");
break;
case 0x5C:
tmp += QLatin1String("\\\\");
break;
default:
tmp += c;
break;
}
}
tmp += QLatin1Char('\"');
return tmp;
}
QString Binding::valueAsScriptString(const Unit *unit) const
{
if (type == Type_String)
return escapedString(unit->stringAt(stringIndex));
else
return valueAsString(unit);
}
}
}
QT_END_NAMESPACE
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