qt/api/qscriptprogram_p.h

   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 JSStringRef program() 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 JSStringRef QScriptProgramPrivate::program() const { return m_program; }
 126 JSStringRef QScriptProgramPrivate::file() const {return m_fileName; }
 127 int QScriptProgramPrivate::line() const { return m_line; }
 128
 129 #endif // qscriptprogram_p_h