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/****************************************************************************
**
** Copyright (C) 2014 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.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qqmljsengine_p.h"
#include "qqmljsglobal_p.h"
#include <QtCore/qnumeric.h>
#include <QtCore/qhash.h>
#include <QtCore/qdebug.h>
QT_QML_BEGIN_NAMESPACE
namespace QQmlJS {
static inline int toDigit(char c)
{
if ((c >= '0') && (c <= '9'))
return c - '0';
else if ((c >= 'a') && (c <= 'z'))
return 10 + c - 'a';
else if ((c >= 'A') && (c <= 'Z'))
return 10 + c - 'A';
return -1;
}
double integerFromString(const char *buf, int size, int radix)
{
if (size == 0)
return qSNaN();
double sign = 1.0;
int i = 0;
if (buf[0] == '+') {
++i;
} else if (buf[0] == '-') {
sign = -1.0;
++i;
}
if (((size-i) >= 2) && (buf[i] == '0')) {
if (((buf[i+1] == 'x') || (buf[i+1] == 'X'))
&& (radix < 34)) {
if ((radix != 0) && (radix != 16))
return 0;
radix = 16;
i += 2;
} else {
if (radix == 0) {
radix = 8;
++i;
}
}
} else if (radix == 0) {
radix = 10;
}
int j = i;
for ( ; i < size; ++i) {
int d = toDigit(buf[i]);
if ((d == -1) || (d >= radix))
break;
}
double result;
if (j == i) {
if (!qstrcmp(buf, "Infinity"))
result = qInf();
else
result = qSNaN();
} else {
result = 0;
double multiplier = 1;
for (--i ; i >= j; --i, multiplier *= radix)
result += toDigit(buf[i]) * multiplier;
}
result *= sign;
return result;
}
double integerFromString(const QString &str, int radix)
{
QByteArray ba = str.trimmed().toLatin1();
return integerFromString(ba.constData(), ba.size(), radix);
}
Engine::Engine()
: _lexer(0), _directives(0)
{ }
Engine::~Engine()
{ }
void Engine::setCode(const QString &code)
{ _code = code; }
void Engine::addComment(int pos, int len, int line, int col)
{ if (len > 0) _comments.append(QQmlJS::AST::SourceLocation(pos, len, line, col)); }
QList<QQmlJS::AST::SourceLocation> Engine::comments() const
{ return _comments; }
Lexer *Engine::lexer() const
{ return _lexer; }
void Engine::setLexer(Lexer *lexer)
{ _lexer = lexer; }
Directives *Engine::directives() const
{ return _directives; }
void Engine::setDirectives(Directives *directives)
{ _directives = directives; }
MemoryPool *Engine::pool()
{ return &_pool; }
QStringRef Engine::newStringRef(const QString &text)
{
const int pos = _extraCode.length();
_extraCode += text;
return _extraCode.midRef(pos, text.length());
}
QStringRef Engine::newStringRef(const QChar *chars, int size)
{ return newStringRef(QString(chars, size)); }
} // end of namespace QQmlJS
QT_QML_END_NAMESPACE
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