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Diffstat (limited to 'src/script/api/qscriptprogram.cpp')
| -rw-r--r-- | src/script/api/qscriptprogram.cpp | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/src/script/api/qscriptprogram.cpp b/src/script/api/qscriptprogram.cpp new file mode 100644 index 0000000..c0e2656 --- /dev/null +++ b/src/script/api/qscriptprogram.cpp @@ -0,0 +1,216 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation ([email protected]) +** +** This file is part of the QtScript module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL-ONLY$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** If you have questions regarding the use of this file, please contact +** Nokia at [email protected]. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "config.h" +#include "qscriptprogram.h" +#include "qscriptprogram_p.h" +#include "qscriptengine.h" +#include "qscriptengine_p.h" + +#include "SamplingTool.h" +#include "Executable.h" + +QT_BEGIN_NAMESPACE + +/*! + \since 4.7 + \class QScriptProgram + + \brief The QScriptProgram class encapsulates a Qt Script program. + + \ingroup script + + QScriptProgram retains the compiled representation of the script if + possible. Thus, QScriptProgram can be used to evaluate the same + script multiple times more efficiently. + + \code + QScriptEngine engine; + QScriptProgram program("1 + 2"); + QScriptValue result = engine.evaluate(program); + \endcode +*/ + +QScriptProgramPrivate::QScriptProgramPrivate(const QString &src, + const QString &fn, + int ln) + : sourceCode(src), fileName(fn), firstLineNumber(ln), + engine(0), _executable(0), sourceId(-1), isCompiled(false) +{ + ref = 0; +} + +QScriptProgramPrivate::~QScriptProgramPrivate() +{ + if (engine) { + QScript::APIShim shim(engine); + _executable.clear(); + engine->unregisterScriptProgram(this); + } +} + +QScriptProgramPrivate *QScriptProgramPrivate::get(const QScriptProgram &q) +{ + return const_cast<QScriptProgramPrivate*>(q.d_func()); +} + +JSC::EvalExecutable *QScriptProgramPrivate::executable(JSC::ExecState *exec, + QScriptEnginePrivate *eng) +{ + if (_executable) { + if (eng == engine) + return _executable.get(); + // "Migrating" to another engine; clean up old state + QScript::APIShim shim(engine); + _executable.clear(); + engine->unregisterScriptProgram(this); + } + WTF::PassRefPtr<QScript::UStringSourceProviderWithFeedback> provider + = QScript::UStringSourceProviderWithFeedback::create(sourceCode, fileName, firstLineNumber, eng); + sourceId = provider->asID(); + JSC::SourceCode source(provider, firstLineNumber); //after construction of SourceCode provider variable will be null. + _executable = JSC::EvalExecutable::create(exec, source); + engine = eng; + engine->registerScriptProgram(this); + isCompiled = false; + return _executable.get(); +} + +void QScriptProgramPrivate::detachFromEngine() +{ + _executable.clear(); + sourceId = -1; + isCompiled = false; + engine = 0; +} + +/*! + Constructs a null QScriptProgram. +*/ +QScriptProgram::QScriptProgram() + : d_ptr(0) +{ +} + +/*! + Constructs a new QScriptProgram with the given \a sourceCode, \a + fileName and \a firstLineNumber. +*/ +QScriptProgram::QScriptProgram(const QString &sourceCode, + const QString fileName, + int firstLineNumber) + : d_ptr(new QScriptProgramPrivate(sourceCode, fileName, firstLineNumber)) +{ +} + +/*! + Constructs a new QScriptProgram that is a copy of \a other. +*/ +QScriptProgram::QScriptProgram(const QScriptProgram &other) + : d_ptr(other.d_ptr) +{ +} + +/*! + Destroys this QScriptProgram. +*/ +QScriptProgram::~QScriptProgram() +{ +} + +/*! + Assigns the \a other value to this QScriptProgram. +*/ +QScriptProgram &QScriptProgram::operator=(const QScriptProgram &other) +{ + d_ptr = other.d_ptr; + return *this; +} + +/*! + Returns true if this QScriptProgram is null; otherwise + returns false. +*/ +bool QScriptProgram::isNull() const +{ + Q_D(const QScriptProgram); + return (d == 0); +} + +/*! + Returns the source code of this program. +*/ +QString QScriptProgram::sourceCode() const +{ + Q_D(const QScriptProgram); + if (!d) + return QString(); + return d->sourceCode; +} + +/*! + Returns the filename associated with this program. +*/ +QString QScriptProgram::fileName() const +{ + Q_D(const QScriptProgram); + if (!d) + return QString(); + return d->fileName; +} + +/*! + Returns the line number associated with this program. +*/ +int QScriptProgram::firstLineNumber() const +{ + Q_D(const QScriptProgram); + if (!d) + return -1; + return d->firstLineNumber; +} + +/*! + Returns true if this QScriptProgram is equal to \a other; + otherwise returns false. +*/ +bool QScriptProgram::operator==(const QScriptProgram &other) const +{ + Q_D(const QScriptProgram); + if (d == other.d_func()) + return true; + return (sourceCode() == other.sourceCode()) + && (fileName() == other.fileName()) + && (firstLineNumber() == other.firstLineNumber()); +} + +/*! + Returns true if this QScriptProgram is not equal to \a other; + otherwise returns false. +*/ +bool QScriptProgram::operator!=(const QScriptProgram &other) const +{ + return !operator==(other); +} + +QT_END_NAMESPACE |