| 1 | /**************************************************************************** | 
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| 2 | ** | 
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| 3 | ** Copyright (C) 2011 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 examples of the Qt Toolkit. | 
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| 8 | ** | 
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| 9 | ** $QT_BEGIN_LICENSE:BSD$ | 
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| 10 | ** You may use this file under the terms of the BSD license as follows: | 
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| 11 | ** | 
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| 12 | ** "Redistribution and use in source and binary forms, with or without | 
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| 13 | ** modification, are permitted provided that the following conditions are | 
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| 14 | ** met: | 
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| 15 | **   * Redistributions of source code must retain the above copyright | 
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| 16 | **     notice, this list of conditions and the following disclaimer. | 
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| 17 | **   * Redistributions in binary form must reproduce the above copyright | 
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| 18 | **     notice, this list of conditions and the following disclaimer in | 
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| 19 | **     the documentation and/or other materials provided with the | 
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| 20 | **     distribution. | 
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| 21 | **   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor | 
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| 22 | **     the names of its contributors may be used to endorse or promote | 
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| 23 | **     products derived from this software without specific prior written | 
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| 24 | **     permission. | 
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| 25 | ** | 
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| 26 | ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 
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| 27 | ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 
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| 28 | ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 
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| 29 | ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 
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| 30 | ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 
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| 31 | ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 
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| 32 | ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 
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| 33 | ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 
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| 34 | ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 
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| 35 | ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 
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| 36 | ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." | 
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| 37 | ** $QT_END_LICENSE$ | 
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| 38 | ** | 
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| 39 | ****************************************************************************/ | 
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| 40 |  | 
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| 41 | #include "scriptdebugger.h" | 
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| 42 | #include "scriptbreakpointmanager.h" | 
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| 43 |  | 
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| 44 | #include <QtScript/QScriptEngine> | 
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| 45 | #include <QtScript/QScriptEngineAgent> | 
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| 46 | #include <QtScript/QScriptContextInfo> | 
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| 47 | #include <QtScript/QScriptValueIterator> | 
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| 48 | #include <QtCore/QTextStream> | 
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| 49 | #include <QtCore/QStack> | 
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| 50 |  | 
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| 51 | static QString safeValueToString(const QScriptValue &value) | 
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| 52 | { | 
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| 53 | if (value.isObject()) | 
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| 54 | return QLatin1String("[object Object]"); | 
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| 55 | else | 
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| 56 | return value.toString(); | 
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| 57 | } | 
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| 58 |  | 
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| 59 | class ScriptInfo; | 
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| 60 | class ScriptBreakpointManager; | 
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| 61 |  | 
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| 62 | class ScriptDebuggerPrivate | 
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| 63 | : public QScriptEngineAgent | 
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| 64 | { | 
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| 65 | Q_DECLARE_PUBLIC(ScriptDebugger) | 
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| 66 | public: | 
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| 67 | enum Mode { | 
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| 68 | Run, | 
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| 69 | StepInto, | 
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| 70 | StepOver | 
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| 71 | }; | 
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| 72 |  | 
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| 73 | ScriptDebuggerPrivate(QScriptEngine *engine); | 
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| 74 | ~ScriptDebuggerPrivate(); | 
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| 75 |  | 
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| 76 | // QScriptEngineAgent interface | 
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| 77 | void scriptLoad(qint64 id, const QString &program, | 
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| 78 | const QString &fileName, int lineNumber); | 
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| 79 | void scriptUnload(qint64 id); | 
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| 80 |  | 
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| 81 | void positionChange(qint64 scriptId, | 
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| 82 | int lineNumber, int columnNumber); | 
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| 83 |  | 
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| 84 | void functionEntry(qint64 scriptId); | 
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| 85 | void functionExit(qint64 scriptId, | 
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| 86 | const QScriptValue &returnValue); | 
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| 87 |  | 
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| 88 | void exceptionThrow(qint64 scriptId, | 
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| 89 | const QScriptValue &exception, bool hasHandler); | 
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| 90 |  | 
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| 91 |  | 
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| 92 | void interactive(); | 
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| 93 | bool executeCommand(const QString &command, const QStringList &args); | 
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| 94 |  | 
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| 95 | void setMode(Mode mode); | 
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| 96 | Mode mode() const; | 
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| 97 |  | 
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| 98 | int frameCount() const; | 
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| 99 | void setCurrentFrameIndex(int index); | 
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| 100 | int currentFrameIndex() const; | 
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| 101 |  | 
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| 102 | QScriptContext *frameContext(int index) const; | 
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| 103 | QScriptContext *currentFrameContext() const; | 
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| 104 |  | 
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| 105 | ScriptInfo *scriptInfo(QScriptContext *context) const; | 
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| 106 |  | 
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| 107 | int listLineNumber() const; | 
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| 108 | void setListLineNumber(int lineNumber); | 
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| 109 |  | 
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| 110 | QString readLine(); | 
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| 111 | void output(const QString &text); | 
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| 112 | void message(const QString &text); | 
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| 113 | void errorMessage(const QString &text); | 
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| 114 |  | 
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| 115 | // attributes | 
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| 116 | QTextStream *m_defaultInputStream; | 
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| 117 | QTextStream *m_defaultOutputStream; | 
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| 118 | QTextStream *m_defaultErrorStream; | 
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| 119 | QTextStream *m_inputStream; | 
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| 120 | QTextStream *m_outputStream; | 
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| 121 | QTextStream *m_errorStream; | 
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| 122 |  | 
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| 123 | ScriptBreakpointManager *m_bpManager; | 
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| 124 | Mode m_mode; | 
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| 125 | QMap<qint64, ScriptInfo*> m_scripts; | 
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| 126 | QMap<QScriptContext*, QStack<qint64> > m_contextProgramIds; | 
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| 127 |  | 
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| 128 | QString m_lastInteractiveCommand; | 
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| 129 | QString m_commandPrefix; | 
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| 130 | int m_stepDepth; | 
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| 131 | int m_currentFrameIndex; | 
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| 132 | int m_listLineNumber; | 
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| 133 |  | 
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| 134 | ScriptDebugger *q_ptr; | 
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| 135 | }; | 
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| 136 |  | 
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| 137 | class ScriptInfo | 
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| 138 | { | 
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| 139 | public: | 
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| 140 | ScriptInfo(const QString &code, const QString &fileName, int lineNumber) | 
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| 141 | : m_code(code), m_fileName(fileName), m_lineNumber(lineNumber) | 
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| 142 | { } | 
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| 143 |  | 
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| 144 | inline QString code() const | 
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| 145 | { return m_code; } | 
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| 146 | inline QString fileName() const | 
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| 147 | { return m_fileName; } | 
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| 148 | inline int lineNumber() const | 
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| 149 | { return m_lineNumber; } | 
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| 150 |  | 
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| 151 | QString lineText(int lineNumber); | 
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| 152 | QMap<int, int> m_lineOffsets; | 
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| 153 |  | 
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| 154 | private: | 
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| 155 | int lineOffset(int lineNumber); | 
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| 156 |  | 
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| 157 | QString m_code; | 
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| 158 | QString m_fileName; | 
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| 159 | int m_lineNumber; | 
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| 160 | }; | 
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| 161 |  | 
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| 162 | int ScriptInfo::lineOffset(int lineNumber) | 
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| 163 | { | 
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| 164 | QMap<int, int>::const_iterator it = m_lineOffsets.constFind(lineNumber); | 
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| 165 | if (it != m_lineOffsets.constEnd()) | 
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| 166 | return it.value(); | 
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| 167 |  | 
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| 168 | int offset; | 
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| 169 | it = m_lineOffsets.constFind(lineNumber - 1); | 
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| 170 | if (it != m_lineOffsets.constEnd()) { | 
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| 171 | offset = it.value(); | 
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| 172 | offset = m_code.indexOf(QLatin1Char('\n'), offset); | 
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| 173 | if (offset != -1) | 
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| 174 | ++offset; | 
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| 175 | m_lineOffsets.insert(lineNumber, offset); | 
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| 176 | } else { | 
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| 177 | int index; | 
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| 178 | it = m_lineOffsets.lowerBound(lineNumber); | 
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| 179 | --it; | 
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| 180 | if (it != m_lineOffsets.constBegin()) { | 
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| 181 | index = it.key(); | 
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| 182 | offset = it.value(); | 
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| 183 | } else { | 
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| 184 | index = m_lineNumber; | 
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| 185 | offset = 0; | 
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| 186 | } | 
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| 187 | int j = index; | 
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| 188 | for ( ; j < lineNumber; ++j) { | 
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| 189 | m_lineOffsets.insert(j, offset); | 
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| 190 | offset = m_code.indexOf(QLatin1Char('\n'), offset); | 
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| 191 | if (offset == -1) | 
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| 192 | break; | 
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| 193 | ++offset; | 
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| 194 | } | 
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| 195 | m_lineOffsets.insert(j, offset); | 
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| 196 | } | 
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| 197 | return offset; | 
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| 198 | } | 
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| 199 |  | 
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| 200 | QString ScriptInfo::lineText(int lineNumber) | 
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| 201 | { | 
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| 202 | int startOffset = lineOffset(lineNumber); | 
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| 203 | if (startOffset == -1) | 
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| 204 | return QString(); | 
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| 205 | int endOffset = lineOffset(lineNumber + 1); | 
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| 206 | if (endOffset == -1) | 
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| 207 | return m_code.mid(startOffset); | 
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| 208 | else | 
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| 209 | return m_code.mid(startOffset, endOffset - startOffset - 1); | 
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| 210 | } | 
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| 211 |  | 
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| 212 |  | 
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| 213 |  | 
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| 214 | ScriptDebuggerPrivate::ScriptDebuggerPrivate(QScriptEngine *engine) | 
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| 215 | : QScriptEngineAgent(engine), m_mode(Run) | 
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| 216 | { | 
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| 217 | m_commandPrefix = QLatin1String("."); | 
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| 218 | m_bpManager = new ScriptBreakpointManager; | 
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| 219 | m_defaultInputStream = new QTextStream(stdin); | 
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| 220 | m_defaultOutputStream = new QTextStream(stdout); | 
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| 221 | m_defaultErrorStream = new QTextStream(stderr); | 
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| 222 | m_inputStream = m_defaultInputStream; | 
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| 223 | m_outputStream = m_defaultOutputStream; | 
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| 224 | m_errorStream = m_defaultErrorStream; | 
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| 225 | } | 
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| 226 |  | 
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| 227 | ScriptDebuggerPrivate::~ScriptDebuggerPrivate() | 
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| 228 | { | 
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| 229 | delete m_defaultInputStream; | 
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| 230 | delete m_defaultOutputStream; | 
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| 231 | delete m_defaultErrorStream; | 
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| 232 | delete m_bpManager; | 
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| 233 | qDeleteAll(m_scripts); | 
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| 234 | } | 
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| 235 |  | 
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| 236 | QString ScriptDebuggerPrivate::readLine() | 
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| 237 | { | 
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| 238 | return m_inputStream->readLine(); | 
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| 239 | } | 
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| 240 |  | 
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| 241 | void ScriptDebuggerPrivate::output(const QString &text) | 
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| 242 | { | 
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| 243 | *m_outputStream << text; | 
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| 244 | } | 
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| 245 |  | 
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| 246 | void ScriptDebuggerPrivate::message(const QString &text) | 
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| 247 | { | 
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| 248 | *m_outputStream << text << endl; | 
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| 249 | m_outputStream->flush(); | 
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| 250 | } | 
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| 251 |  | 
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| 252 | void ScriptDebuggerPrivate::errorMessage(const QString &text) | 
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| 253 | { | 
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| 254 | *m_errorStream << text << endl; | 
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| 255 | m_errorStream->flush(); | 
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| 256 | } | 
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| 257 |  | 
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| 258 | void ScriptDebuggerPrivate::setMode(Mode mode) | 
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| 259 | { | 
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| 260 | m_mode = mode; | 
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| 261 | } | 
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| 262 |  | 
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| 263 | ScriptDebuggerPrivate::Mode ScriptDebuggerPrivate::mode() const | 
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| 264 | { | 
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| 265 | return m_mode; | 
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| 266 | } | 
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| 267 |  | 
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| 268 | QScriptContext *ScriptDebuggerPrivate::frameContext(int index) const | 
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| 269 | { | 
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| 270 | QScriptContext *ctx = engine()->currentContext(); | 
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| 271 | for (int i = 0; i < index; ++i) { | 
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| 272 | ctx = ctx->parentContext(); | 
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| 273 | if (!ctx) | 
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| 274 | break; | 
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| 275 | } | 
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| 276 | return ctx; | 
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| 277 | } | 
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| 278 |  | 
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| 279 | int ScriptDebuggerPrivate::currentFrameIndex() const | 
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| 280 | { | 
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| 281 | return m_currentFrameIndex; | 
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| 282 | } | 
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| 283 |  | 
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| 284 | void ScriptDebuggerPrivate::setCurrentFrameIndex(int index) | 
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| 285 | { | 
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| 286 | m_currentFrameIndex = index; | 
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| 287 | m_listLineNumber = -1; | 
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| 288 | } | 
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| 289 |  | 
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| 290 | int ScriptDebuggerPrivate::listLineNumber() const | 
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| 291 | { | 
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| 292 | return m_listLineNumber; | 
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| 293 | } | 
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| 294 |  | 
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| 295 | void ScriptDebuggerPrivate::setListLineNumber(int lineNumber) | 
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| 296 | { | 
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| 297 | m_listLineNumber = lineNumber; | 
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| 298 | } | 
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| 299 |  | 
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| 300 | QScriptContext *ScriptDebuggerPrivate::currentFrameContext() const | 
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| 301 | { | 
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| 302 | return frameContext(currentFrameIndex()); | 
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| 303 | } | 
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| 304 |  | 
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| 305 | int ScriptDebuggerPrivate::frameCount() const | 
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| 306 | { | 
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| 307 | int count = 0; | 
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| 308 | QScriptContext *ctx = engine()->currentContext(); | 
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| 309 | while (ctx) { | 
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| 310 | ++count; | 
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| 311 | ctx = ctx->parentContext(); | 
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| 312 | } | 
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| 313 | return count; | 
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| 314 | } | 
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| 315 |  | 
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| 316 | ScriptInfo *ScriptDebuggerPrivate::scriptInfo(QScriptContext *context) const | 
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| 317 | { | 
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| 318 | QStack<qint64> pids = m_contextProgramIds.value(context); | 
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| 319 | if (pids.isEmpty()) | 
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| 320 | return 0; | 
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| 321 | return m_scripts.value(pids.top()); | 
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| 322 | } | 
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| 323 |  | 
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| 324 | void ScriptDebuggerPrivate::interactive() | 
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| 325 | { | 
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| 326 | setCurrentFrameIndex(0); | 
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| 327 |  | 
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| 328 | QString qsdbgPrompt = QString::fromLatin1("(qsdbg) "); | 
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| 329 | QString dotPrompt = QString::fromLatin1(".... "); | 
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| 330 | QString prompt = qsdbgPrompt; | 
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| 331 |  | 
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| 332 | QString code; | 
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| 333 |  | 
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| 334 | forever { | 
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| 335 |  | 
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| 336 | *m_outputStream << prompt; | 
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| 337 | m_outputStream->flush(); | 
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| 338 |  | 
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| 339 | QString line = readLine(); | 
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| 340 |  | 
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| 341 | if (code.isEmpty() && (line.isEmpty() || line.startsWith(m_commandPrefix))) { | 
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| 342 | if (line.isEmpty()) | 
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| 343 | line = m_lastInteractiveCommand; | 
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| 344 | else | 
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| 345 | m_lastInteractiveCommand = line; | 
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| 346 |  | 
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| 347 | QStringList parts = line.split(QLatin1Char(' '), QString::SkipEmptyParts); | 
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| 348 | if (!parts.isEmpty()) { | 
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| 349 | QString command = parts.takeFirst().mid(1); | 
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| 350 | if (executeCommand(command, parts)) | 
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| 351 | break; | 
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| 352 | } | 
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| 353 |  | 
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| 354 | } else { | 
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| 355 | if (line.isEmpty()) | 
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| 356 | continue; | 
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| 357 |  | 
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| 358 | code += line; | 
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| 359 | code += QLatin1Char('\n'); | 
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| 360 |  | 
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| 361 | if (line.trimmed().isEmpty()) { | 
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| 362 | continue; | 
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| 363 |  | 
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| 364 | } else if (! engine()->canEvaluate(code)) { | 
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| 365 | prompt = dotPrompt; | 
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| 366 |  | 
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| 367 | } else { | 
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| 368 | setMode(Run); | 
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| 369 | QScriptValue result = engine()->evaluate(code, QLatin1String("typein")); | 
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| 370 |  | 
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| 371 | code.clear(); | 
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| 372 | prompt = qsdbgPrompt; | 
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| 373 |  | 
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| 374 | if (! result.isUndefined()) { | 
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| 375 | errorMessage(result.toString()); | 
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| 376 | engine()->clearExceptions(); | 
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| 377 | } | 
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| 378 | } | 
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| 379 | } | 
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| 380 | } | 
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| 381 | } | 
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| 382 |  | 
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| 383 | bool ScriptDebuggerPrivate::executeCommand(const QString &command, const QStringList &args) | 
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| 384 | { | 
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| 385 | if (command == QLatin1String("c") | 
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| 386 | || command == QLatin1String("continue")) { | 
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| 387 | setMode(Run); | 
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| 388 | return true; | 
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| 389 | } else if (command == QLatin1String("s") | 
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| 390 | || command == QLatin1String("step")) { | 
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| 391 | setMode(StepInto); | 
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| 392 | return true; | 
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| 393 | } else if (command == QLatin1String("n") | 
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| 394 | || command == QLatin1String("next")) { | 
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| 395 | setMode(StepOver); | 
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| 396 | m_stepDepth = 0; | 
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| 397 | return true; | 
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| 398 | } else if (command == QLatin1String("f") | 
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| 399 | || command == QLatin1String("frame")) { | 
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| 400 | bool ok = false; | 
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| 401 | int index = args.value(0).toInt(&ok); | 
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| 402 | if (ok) { | 
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| 403 | if (index < 0 || index >= frameCount()) { | 
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| 404 | errorMessage("No such frame."); | 
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| 405 | } else { | 
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| 406 | setCurrentFrameIndex(index); | 
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| 407 | QScriptContext *ctx = currentFrameContext(); | 
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| 408 | message(QString::fromLatin1("#%0  %1").arg(index).arg(ctx->toString())); | 
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| 409 | } | 
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| 410 | } | 
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| 411 | } else if (command == QLatin1String("bt") | 
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| 412 | || command == QLatin1String("backtrace")) { | 
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| 413 | QScriptContext *ctx = engine()->currentContext(); | 
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| 414 | int index = -1; | 
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| 415 | while (ctx) { | 
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| 416 | ++index; | 
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| 417 | QString line = ctx->toString(); | 
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| 418 | message(QString::fromLatin1("#%0  %1").arg(index).arg(line)); | 
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| 419 | ctx = ctx->parentContext(); | 
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| 420 | } | 
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| 421 | } else if (command == QLatin1String("up")) { | 
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| 422 | int index = currentFrameIndex() + 1; | 
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| 423 | if (index == frameCount()) { | 
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| 424 | errorMessage(QString::fromLatin1("Initial frame selected; you cannot go up.")); | 
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| 425 | } else { | 
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| 426 | setCurrentFrameIndex(index); | 
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| 427 | QScriptContext *ctx = currentFrameContext(); | 
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| 428 | message(QString::fromLatin1("#%0  %1").arg(index).arg(ctx->toString())); | 
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| 429 | } | 
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| 430 | } else if (command == QLatin1String("down")) { | 
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| 431 | int index = currentFrameIndex() - 1; | 
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| 432 | if (index < 0) { | 
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| 433 | errorMessage(QString::fromLatin1("Bottom (innermost) frame selected; you cannot go down.")); | 
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| 434 | } else { | 
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| 435 | setCurrentFrameIndex(index); | 
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| 436 | QScriptContext *ctx = currentFrameContext(); | 
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| 437 | message(QString::fromLatin1("#%0  %1").arg(index).arg(ctx->toString())); | 
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| 438 | } | 
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| 439 | } else if (command == QLatin1String("b") | 
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| 440 | || command == QLatin1String("break")) { | 
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| 441 | QString str = args.value(0); | 
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| 442 | int colonIndex = str.indexOf(QLatin1Char(':')); | 
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| 443 | if (colonIndex != -1) { | 
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| 444 | // filename:line form | 
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| 445 | QString fileName = str.left(colonIndex); | 
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| 446 | int lineNumber = str.mid(colonIndex+1).toInt(); | 
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| 447 | int id = m_bpManager->setBreakpoint(fileName, lineNumber); | 
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| 448 | message(QString::fromLatin1("Breakpoint %0 at %1, line %2.").arg(id+1).arg(fileName).arg(lineNumber)); | 
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| 449 | } else { | 
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| 450 | // function | 
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| 451 | QScriptValue fun = engine()->globalObject().property(str); | 
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| 452 | if (fun.isFunction()) { | 
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| 453 | int id = m_bpManager->setBreakpoint(fun); | 
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| 454 | message(QString::fromLatin1("Breakpoint %0 at %1().").arg(id+1).arg(str)); | 
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| 455 | } | 
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| 456 | } | 
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| 457 | } else if (command == QLatin1String("d") | 
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| 458 | || command == QLatin1String("delete")) { | 
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| 459 | int id = args.value(0).toInt() - 1; | 
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| 460 | m_bpManager->removeBreakpoint(id); | 
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| 461 | } else if (command == QLatin1String("disable")) { | 
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| 462 | int id = args.value(0).toInt() - 1; | 
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| 463 | m_bpManager->setBreakpointEnabled(id, false); | 
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| 464 | } else if (command == QLatin1String("enable")) { | 
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| 465 | int id = args.value(0).toInt() - 1; | 
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| 466 | m_bpManager->setBreakpointEnabled(id, true); | 
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| 467 | } else if (command == QLatin1String("list")) { | 
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| 468 | QScriptContext *ctx = currentFrameContext(); | 
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| 469 | ScriptInfo *progInfo = scriptInfo(ctx); | 
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| 470 | if (!progInfo) { | 
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| 471 | errorMessage("No source text available for this frame."); | 
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| 472 | } else { | 
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| 473 | QScriptContextInfo ctxInfo(ctx); | 
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| 474 | bool ok; | 
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| 475 | int line = args.value(0).toInt(&ok); | 
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| 476 | if (ok) { | 
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| 477 | line = qMax(1, line - 5); | 
|---|
| 478 | } else { | 
|---|
| 479 | line = listLineNumber(); | 
|---|
| 480 | if (line == -1) | 
|---|
| 481 | line = qMax(progInfo->lineNumber(), ctxInfo.lineNumber() - 5); | 
|---|
| 482 | } | 
|---|
| 483 | for (int i = line; i < line + 10; ++i) { | 
|---|
| 484 | message(QString::fromLatin1("%0\t%1").arg(i).arg(progInfo->lineText(i))); | 
|---|
| 485 | } | 
|---|
| 486 | setListLineNumber(line + 10); | 
|---|
| 487 | } | 
|---|
| 488 | } else if (command == QLatin1String("info")) { | 
|---|
| 489 | if (args.size() < 1) { | 
|---|
| 490 | } else { | 
|---|
| 491 | QString what = args.value(0); | 
|---|
| 492 | if (what == QLatin1String("locals")) { | 
|---|
| 493 | QScriptValueIterator it(currentFrameContext()->activationObject()); | 
|---|
| 494 | while (it.hasNext()) { | 
|---|
| 495 | it.next(); | 
|---|
| 496 | QString line; | 
|---|
| 497 | line.append(it.name()); | 
|---|
| 498 | line.append(QLatin1String(" = ")); | 
|---|
| 499 | line.append(safeValueToString(it.value())); | 
|---|
| 500 | message(line); | 
|---|
| 501 | } | 
|---|
| 502 | } | 
|---|
| 503 | } | 
|---|
| 504 | } else if (command == QLatin1String("help")) { | 
|---|
| 505 | message("continue - continue execution\n" | 
|---|
| 506 | "step     - step into statement\n" | 
|---|
| 507 | "next     - step over statement\n" | 
|---|
| 508 | "list     - show where you are\n" | 
|---|
| 509 | "\n" | 
|---|
| 510 | "break    - set breakpoint\n" | 
|---|
| 511 | "delete   - remove breakpoint\n" | 
|---|
| 512 | "disable  - disable breakpoint\n" | 
|---|
| 513 | "enable   - enable breakpoint\n" | 
|---|
| 514 | "\n" | 
|---|
| 515 | "backtrace - show backtrace\n" | 
|---|
| 516 | "up       - one frame up\n" | 
|---|
| 517 | "down     - one frame down\n" | 
|---|
| 518 | "frame    - set frame\n" | 
|---|
| 519 | "\n" | 
|---|
| 520 | "info locals - show local variables"); | 
|---|
| 521 | } else { | 
|---|
| 522 | errorMessage(QString::fromLatin1("Undefined command \"%0\". Try \"help\".") | 
|---|
| 523 | .arg(command)); | 
|---|
| 524 | } | 
|---|
| 525 |  | 
|---|
| 526 | return false; | 
|---|
| 527 | } | 
|---|
| 528 |  | 
|---|
| 529 |  | 
|---|
| 530 | // QScriptEngineAgent interface | 
|---|
| 531 |  | 
|---|
| 532 | void ScriptDebuggerPrivate::scriptLoad(qint64 id, const QString &program, | 
|---|
| 533 | const QString &fileName, int lineNumber) | 
|---|
| 534 | { | 
|---|
| 535 | ScriptInfo *info = new ScriptInfo(program, fileName, lineNumber); | 
|---|
| 536 | m_scripts.insert(id, info); | 
|---|
| 537 | } | 
|---|
| 538 |  | 
|---|
| 539 | void ScriptDebuggerPrivate::scriptUnload(qint64 id) | 
|---|
| 540 | { | 
|---|
| 541 | ScriptInfo *info = m_scripts.take(id); | 
|---|
| 542 | delete info; | 
|---|
| 543 | } | 
|---|
| 544 |  | 
|---|
| 545 | void ScriptDebuggerPrivate::functionEntry(qint64 scriptId) | 
|---|
| 546 | { | 
|---|
| 547 | if (scriptId != -1) { | 
|---|
| 548 | QScriptContext *ctx = engine()->currentContext(); | 
|---|
| 549 | QStack<qint64> ids = m_contextProgramIds.value(ctx); | 
|---|
| 550 | ids.push(scriptId); | 
|---|
| 551 | m_contextProgramIds.insert(ctx, ids); | 
|---|
| 552 | } | 
|---|
| 553 |  | 
|---|
| 554 | if (mode() == StepOver) | 
|---|
| 555 | ++m_stepDepth; | 
|---|
| 556 | } | 
|---|
| 557 |  | 
|---|
| 558 | void ScriptDebuggerPrivate::functionExit(qint64 scriptId, | 
|---|
| 559 | const QScriptValue &/*returnValue*/) | 
|---|
| 560 | { | 
|---|
| 561 | if (scriptId != -1) { | 
|---|
| 562 | QScriptContext *ctx = engine()->currentContext(); | 
|---|
| 563 | QStack<qint64> ids = m_contextProgramIds.value(ctx); | 
|---|
| 564 | Q_ASSERT(!ids.isEmpty()); | 
|---|
| 565 | Q_ASSERT(ids.top() == scriptId); | 
|---|
| 566 | ids.pop(); | 
|---|
| 567 | m_contextProgramIds.insert(ctx, ids); | 
|---|
| 568 | } | 
|---|
| 569 |  | 
|---|
| 570 | if (mode() == StepOver) | 
|---|
| 571 | --m_stepDepth; | 
|---|
| 572 | } | 
|---|
| 573 |  | 
|---|
| 574 | void ScriptDebuggerPrivate::positionChange(qint64 scriptId, | 
|---|
| 575 | int lineNumber, int /*columnNumber*/) | 
|---|
| 576 | { | 
|---|
| 577 | ScriptInfo *info = 0; | 
|---|
| 578 | bool enterInteractiveMode = false; | 
|---|
| 579 |  | 
|---|
| 580 | if (m_bpManager->hasBreakpoints()) { | 
|---|
| 581 | // check if we hit a breakpoint | 
|---|
| 582 | info = m_scripts.value(scriptId); | 
|---|
| 583 | QScriptContext *ctx = engine()->currentContext(); | 
|---|
| 584 | QScriptContextInfo ctxInfo(ctx); | 
|---|
| 585 | QScriptValue callee = ctx->callee(); | 
|---|
| 586 |  | 
|---|
| 587 | // try fileName:lineNumber | 
|---|
| 588 | int bpid = m_bpManager->findBreakpoint(info->fileName(), lineNumber); | 
|---|
| 589 | if ((bpid != -1) && m_bpManager->isBreakpointEnabled(bpid)) { | 
|---|
| 590 | message(QString::fromLatin1("Breakpoint %0 at %1:%2") | 
|---|
| 591 | .arg(bpid + 1).arg(info->fileName()).arg(lineNumber)); | 
|---|
| 592 | if (m_bpManager->isBreakpointSingleShot(bpid)) | 
|---|
| 593 | m_bpManager->removeBreakpoint(bpid); | 
|---|
| 594 | } | 
|---|
| 595 | if (bpid == -1) { | 
|---|
| 596 | // try function | 
|---|
| 597 | bpid = m_bpManager->findBreakpoint(callee); | 
|---|
| 598 | if ((bpid != -1) && m_bpManager->isBreakpointEnabled(bpid)) { | 
|---|
| 599 | message(QString::fromLatin1("Breakpoint %0, %1()") | 
|---|
| 600 | .arg(bpid + 1).arg(ctxInfo.functionName())); | 
|---|
| 601 | if (m_bpManager->isBreakpointSingleShot(bpid)) | 
|---|
| 602 | m_bpManager->removeBreakpoint(bpid); | 
|---|
| 603 | } | 
|---|
| 604 | } | 
|---|
| 605 | if ((bpid == -1) && !ctxInfo.functionName().isEmpty()) { | 
|---|
| 606 | // try functionName:fileName | 
|---|
| 607 | bpid = m_bpManager->findBreakpoint(ctxInfo.functionName(), ctxInfo.fileName()); | 
|---|
| 608 | if ((bpid != -1) && m_bpManager->isBreakpointEnabled(bpid)) { | 
|---|
| 609 | message(QString::fromLatin1("Breakpoint %0, %1():%2").arg(bpid + 1) | 
|---|
| 610 | .arg(ctxInfo.functionName()).arg(ctxInfo.fileName())); | 
|---|
| 611 | if (m_bpManager->isBreakpointSingleShot(bpid)) | 
|---|
| 612 | m_bpManager->removeBreakpoint(bpid); | 
|---|
| 613 | } | 
|---|
| 614 | } | 
|---|
| 615 |  | 
|---|
| 616 | enterInteractiveMode = (bpid != -1); | 
|---|
| 617 | } | 
|---|
| 618 |  | 
|---|
| 619 | switch (mode()) { | 
|---|
| 620 | case Run: | 
|---|
| 621 | break; | 
|---|
| 622 |  | 
|---|
| 623 | case StepInto: | 
|---|
| 624 | enterInteractiveMode = true; | 
|---|
| 625 | break; | 
|---|
| 626 |  | 
|---|
| 627 | case StepOver: | 
|---|
| 628 | enterInteractiveMode = enterInteractiveMode || (m_stepDepth <= 0); | 
|---|
| 629 | break; | 
|---|
| 630 | } | 
|---|
| 631 |  | 
|---|
| 632 | if (enterInteractiveMode) { | 
|---|
| 633 | if (!info) | 
|---|
| 634 | info = m_scripts.value(scriptId); | 
|---|
| 635 | Q_ASSERT(info); | 
|---|
| 636 | message(QString::fromLatin1("%0\t%1").arg(lineNumber).arg(info->lineText(lineNumber))); | 
|---|
| 637 | interactive(); | 
|---|
| 638 | } | 
|---|
| 639 | } | 
|---|
| 640 |  | 
|---|
| 641 | void ScriptDebuggerPrivate::exceptionThrow(qint64 /*scriptId*/, | 
|---|
| 642 | const QScriptValue &exception, | 
|---|
| 643 | bool hasHandler) | 
|---|
| 644 | { | 
|---|
| 645 | if (!hasHandler) { | 
|---|
| 646 | errorMessage(QString::fromLatin1("uncaught exception: %0").arg(exception.toString())); | 
|---|
| 647 | QScriptContext *ctx = engine()->currentContext(); | 
|---|
| 648 | int lineNumber = QScriptContextInfo(ctx).lineNumber(); | 
|---|
| 649 | ScriptInfo *info = scriptInfo(ctx); | 
|---|
| 650 | QString lineText = info ? info->lineText(lineNumber) : QString("(no source text available)"); | 
|---|
| 651 | message(QString::fromLatin1("%0\t%1").arg(lineNumber).arg(lineText)); | 
|---|
| 652 | interactive(); | 
|---|
| 653 | } | 
|---|
| 654 | } | 
|---|
| 655 |  | 
|---|
| 656 |  | 
|---|
| 657 |  | 
|---|
| 658 | ScriptDebugger::ScriptDebugger(QScriptEngine *engine) | 
|---|
| 659 | : d_ptr(new ScriptDebuggerPrivate(engine)) | 
|---|
| 660 | { | 
|---|
| 661 | d_ptr->q_ptr = this; | 
|---|
| 662 | engine->setAgent(d_ptr); | 
|---|
| 663 | } | 
|---|
| 664 |  | 
|---|
| 665 | ScriptDebugger::ScriptDebugger(QScriptEngine *engine, ScriptDebuggerPrivate &dd) | 
|---|
| 666 | : d_ptr(&dd) | 
|---|
| 667 | { | 
|---|
| 668 | d_ptr->q_ptr = this; | 
|---|
| 669 | engine->setAgent(d_ptr); | 
|---|
| 670 | } | 
|---|
| 671 |  | 
|---|
| 672 | ScriptDebugger::~ScriptDebugger() | 
|---|
| 673 | { | 
|---|
| 674 | delete d_ptr; | 
|---|
| 675 | d_ptr = 0; | 
|---|
| 676 | } | 
|---|
| 677 |  | 
|---|
| 678 | void ScriptDebugger::breakAtNextStatement() | 
|---|
| 679 | { | 
|---|
| 680 | Q_D(ScriptDebugger); | 
|---|
| 681 | d->setMode(ScriptDebuggerPrivate::StepInto); | 
|---|
| 682 | } | 
|---|
| 683 |  | 
|---|
| 684 | void ScriptDebugger::setBreakpoint(const QString &fileName, int lineNumber) | 
|---|
| 685 | { | 
|---|
| 686 | Q_D(ScriptDebugger); | 
|---|
| 687 | d->m_bpManager->setBreakpoint(fileName, lineNumber); | 
|---|
| 688 | } | 
|---|
| 689 |  | 
|---|
| 690 | void ScriptDebugger::setBreakpoint(const QString &functionName, const QString &fileName) | 
|---|
| 691 | { | 
|---|
| 692 | Q_D(ScriptDebugger); | 
|---|
| 693 | d->m_bpManager->setBreakpoint(functionName, fileName); | 
|---|
| 694 | } | 
|---|
| 695 |  | 
|---|
| 696 | void ScriptDebugger::setBreakpoint(const QScriptValue &function) | 
|---|
| 697 | { | 
|---|
| 698 | Q_D(ScriptDebugger); | 
|---|
| 699 | d->m_bpManager->setBreakpoint(function); | 
|---|
| 700 | } | 
|---|
| 701 |  | 
|---|
| 702 | QTextStream *ScriptDebugger::inputStream() const | 
|---|
| 703 | { | 
|---|
| 704 | Q_D(const ScriptDebugger); | 
|---|
| 705 | return d->m_inputStream; | 
|---|
| 706 | } | 
|---|
| 707 |  | 
|---|
| 708 | void ScriptDebugger::setInputStream(QTextStream *inputStream) | 
|---|
| 709 | { | 
|---|
| 710 | Q_D(ScriptDebugger); | 
|---|
| 711 | d->m_inputStream = inputStream; | 
|---|
| 712 | } | 
|---|
| 713 |  | 
|---|
| 714 | QTextStream *ScriptDebugger::outputStream() const | 
|---|
| 715 | { | 
|---|
| 716 | Q_D(const ScriptDebugger); | 
|---|
| 717 | return d->m_outputStream; | 
|---|
| 718 | } | 
|---|
| 719 |  | 
|---|
| 720 | void ScriptDebugger::setOutputStream(QTextStream *outputStream) | 
|---|
| 721 | { | 
|---|
| 722 | Q_D(ScriptDebugger); | 
|---|
| 723 | d->m_outputStream = outputStream; | 
|---|
| 724 | } | 
|---|
| 725 |  | 
|---|
| 726 | QTextStream *ScriptDebugger::errorStream() const | 
|---|
| 727 | { | 
|---|
| 728 | Q_D(const ScriptDebugger); | 
|---|
| 729 | return d->m_errorStream; | 
|---|
| 730 | } | 
|---|
| 731 |  | 
|---|
| 732 | void ScriptDebugger::setErrorStream(QTextStream *errorStream) | 
|---|
| 733 | { | 
|---|
| 734 | Q_D(ScriptDebugger); | 
|---|
| 735 | d->m_errorStream = errorStream; | 
|---|
| 736 | } | 
|---|