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      1 /*
      2     Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
      3 
      4     This library is free software; you can redistribute it and/or
      5     modify it under the terms of the GNU Library General Public
      6     License as published by the Free Software Foundation; either
      7     version 2 of the License, or (at your option) any later version.
      8 
      9     This library is distributed in the hope that it will be useful,
     10     but WITHOUT ANY WARRANTY; without even the implied warranty of
     11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12     Library General Public License for more details.
     13 
     14     You should have received a copy of the GNU Library General Public License
     15     along with this library; see the file COPYING.LIB.  If not, write to
     16     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17     Boston, MA 02110-1301, USA.
     18 */
     19 
     20 #ifndef qscriptprogram_p_h
     21 #define qscriptprogram_p_h
     22 
     23 #include "qscriptconverter_p.h"
     24 #include "qscriptprogram.h"
     25 #include <JavaScriptCore/JavaScript.h>
     26 #include <QtCore/qshareddata.h>
     27 #include <QtCore/qstring.h>
     28 
     29 /*
     30    FIXME The QScriptProgramPrivate potentially could be much faster. In current implementation we
     31    gain CPU time only by avoiding QString -> JSStringRef conversion. In the ideal world we should
     32    have a function inside the JSC C API that could provide us "parse once, execute multiple times"
     33    functionality.
     34 */
     35 
     36 class QScriptProgramPrivate : public QSharedData {
     37 public:
     38     inline static QScriptProgramPrivate* get(const QScriptProgram& program);
     39     inline QScriptProgramPrivate();
     40     inline QScriptProgramPrivate(const QString& sourceCode,
     41                    const QString fileName,
     42                    int firstLineNumber);
     43 
     44     inline ~QScriptProgramPrivate();
     45 
     46     inline bool isNull() const;
     47 
     48     inline QString sourceCode() const;
     49     inline QString fileName() const;
     50     inline int firstLineNumber() const;
     51 
     52     inline bool operator==(const QScriptProgramPrivate& other) const;
     53     inline bool operator!=(const QScriptProgramPrivate& other) const;
     54 
     55     inline operator JSStringRef() const;
     56     inline JSStringRef file() const;
     57     inline int line() const;
     58 private:
     59     JSStringRef m_program;
     60     JSStringRef m_fileName;
     61     int m_line;
     62 };
     63 
     64 QScriptProgramPrivate* QScriptProgramPrivate::get(const QScriptProgram& program)
     65 {
     66     return const_cast<QScriptProgramPrivate*>(program.d_ptr.constData());
     67 }
     68 
     69 QScriptProgramPrivate::QScriptProgramPrivate()
     70     : m_program(0)
     71     , m_fileName(0)
     72     , m_line(-1)
     73 {}
     74 
     75 QScriptProgramPrivate::QScriptProgramPrivate(const QString& sourceCode,
     76                const QString fileName,
     77                int firstLineNumber)
     78                    : m_program(QScriptConverter::toString(sourceCode))
     79                    , m_fileName(QScriptConverter::toString(fileName))
     80                    , m_line(firstLineNumber)
     81 {}
     82 
     83 QScriptProgramPrivate::~QScriptProgramPrivate()
     84 {
     85     if (!isNull()) {
     86         JSStringRelease(m_program);
     87         JSStringRelease(m_fileName);
     88     }
     89 }
     90 
     91 bool QScriptProgramPrivate::isNull() const
     92 {
     93     return !m_program;
     94 }
     95 
     96 QString QScriptProgramPrivate::sourceCode() const
     97 {
     98     return QScriptConverter::toString(m_program);
     99 }
    100 
    101 QString QScriptProgramPrivate::fileName() const
    102 {
    103     return QScriptConverter::toString(m_fileName);
    104 }
    105 
    106 int QScriptProgramPrivate::firstLineNumber() const
    107 {
    108     return m_line;
    109 }
    110 
    111 bool QScriptProgramPrivate::operator==(const QScriptProgramPrivate& other) const
    112 {
    113     return m_line == other.m_line
    114             && JSStringIsEqual(m_fileName, other.m_fileName)
    115             && JSStringIsEqual(m_program, other.m_program);
    116 }
    117 
    118 bool QScriptProgramPrivate::operator!=(const QScriptProgramPrivate& other) const
    119 {
    120     return m_line != other.m_line
    121             || !JSStringIsEqual(m_fileName, other.m_fileName)
    122             || !JSStringIsEqual(m_program, other.m_program);
    123 }
    124 
    125 QScriptProgramPrivate::operator JSStringRef() const
    126 {
    127     return m_program;
    128 }
    129 
    130 JSStringRef QScriptProgramPrivate::file() const {return m_fileName; }
    131 int QScriptProgramPrivate::line() const { return m_line; }
    132 
    133 #endif // qscriptprogram_p_h
    134