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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtDeclarative module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #ifndef QDECLARATIVEVME_P_H |
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43 #define QDECLARATIVEVME_P_H |
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44 |
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45 // |
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46 // W A R N I N G |
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47 // ------------- |
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48 // |
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49 // This file is not part of the Qt API. It exists purely as an |
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50 // implementation detail. This header file may change from version to |
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51 // version without notice, or even be removed. |
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52 // |
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53 // We mean it. |
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54 // |
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55 |
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56 #include "qdeclarativeerror.h" |
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57 #include "private/qbitfield_p.h" |
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58 |
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59 #include <QtCore/QString> |
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60 #include <QtCore/QStack> |
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61 |
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62 QT_BEGIN_NAMESPACE |
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63 |
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64 class QObject; |
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65 class QDeclarativeInstruction; |
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66 class QDeclarativeCompiledData; |
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67 class QDeclarativeCompiledData; |
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68 class QDeclarativeContextData; |
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69 |
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70 template<typename T, int N = 128> |
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71 class QDeclarativeVMEStack { |
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72 public: |
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73 QDeclarativeVMEStack() : index(-1), maxSize(N), data((T *)fixedData) {} |
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74 ~QDeclarativeVMEStack() { if (data != (T *)fixedData) qFree(data); } |
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75 |
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76 bool isEmpty() const { return index == -1; } |
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77 const T &top() const { return data[index]; } |
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78 void push(const T &i) { ++index; if (index == maxSize) realloc(); data[index] = i; } |
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79 const T &pop() { --index; return data[index + 1]; } |
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80 int count() const { return index + 1; } |
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81 const T &at(int idx) { return data[idx]; } |
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82 |
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83 private: |
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84 void realloc() { |
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85 maxSize += N; |
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86 if (data != (T *)fixedData) { |
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87 data = (T*)qRealloc(data, maxSize * sizeof(T)); |
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88 } else { |
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89 data = (T*)qMalloc(maxSize * sizeof(T)); |
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90 } |
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91 } |
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92 int index; |
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93 int maxSize; |
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94 T *data; |
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95 char fixedData[N * sizeof(T)]; |
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96 }; |
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97 |
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98 class QDeclarativeVME |
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99 { |
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100 public: |
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101 QDeclarativeVME(); |
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102 |
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103 QObject *run(QDeclarativeContextData *, QDeclarativeCompiledData *, |
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104 int start = -1, int count = -1, |
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105 const QBitField & = QBitField()); |
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106 void runDeferred(QObject *); |
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107 |
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108 bool isError() const; |
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109 QList<QDeclarativeError> errors() const; |
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110 |
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111 private: |
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112 QObject *run(QDeclarativeVMEStack<QObject *> &, |
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113 QDeclarativeContextData *, QDeclarativeCompiledData *, |
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114 int start, int count, |
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115 const QBitField &); |
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116 QList<QDeclarativeError> vmeErrors; |
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117 }; |
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118 |
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119 QT_END_NAMESPACE |
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120 |
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121 #endif // QDECLARATIVEVME_P_H |