cpython.git - https://github.com/python/cpython.git

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Diffstat (limited to 'Python/getopt.c')

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/**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the documentation of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** No Commercial Usage ** This file contains pre-release code and may not be distributed. ** You may use this file in accordance with the terms and conditions ** contained in the Technology Preview License Agreement accompanying ** this package. ** ** GNU Lesser General Public License Usage ** Alternatively, 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. ** ** In addition, as a special exception, Nokia gives you certain additional ** rights. These rights are described in the Nokia Qt LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** ** ** ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ //! [0] QScriptEngine myEngine; QScriptValue three = myEngine.evaluate("1 + 2"); //! [0] //! [1] QScriptValue fun = myEngine.evaluate("function(a, b) { return a + b; }"); QScriptValueList args; args << 1 << 2; QScriptValue threeAgain = fun.call(QScriptValue(), args); //! [1] //! [2] QString fileName = "helloworld.qs"; QFile scriptFile(fileName); if (!scriptFile.open(QIODevice::ReadOnly)) // handle error QTextStream stream(&scriptFile); QString contents = stream.readAll(); scriptFile.close(); myEngine.evaluate(contents, fileName); //! [2] //! [3] myEngine.globalObject().setProperty("myNumber", 123); ... QScriptValue myNumberPlusOne = myEngine.evaluate("myNumber + 1"); //! [3] //! [4] QScriptValue result = myEngine.evaluate(...); if (myEngine.hasUncaughtException()) { int line = myEngine.uncaughtExceptionLineNumber(); qDebug() << "uncaught exception at line" << line << ":" << result.toString(); } //! [4] //! [5] QPushButton button; QScriptValue scriptButton = myEngine.newQObject(&button); myEngine.globalObject().setProperty("button", scriptButton); myEngine.evaluate("button.checkable = true"); qDebug() << scriptButton.property("checkable").toBoolean(); scriptButton.property("show").call(); // call the show() slot //! [5] //! [6] QScriptValue myAdd(QScriptContext *context, QScriptEngine *engine) { QScriptValue a = context->argument(0); QScriptValue b = context->argument(1); return a.toNumber() + b.toNumber(); } //! [6] //! [7] QScriptValue fun = myEngine.newFunction(myAdd); myEngine.globalObject().setProperty("myAdd", fun); //! [7] //! [8] QScriptValue result = myEngine.evaluate("myAdd(myNumber, 1)"); //! [8] //! [9] QScriptValue Foo(QScriptContext *context, QScriptEngine *engine) { if (context->calledAsConstructor()) { // initialize the new object context->thisObject().setProperty("bar", ...); // ... // return a non-object value to indicate that the // thisObject() should be the result of the "new Foo()" expression return engine->undefinedValue(); } else { // not called as "new Foo()", just "Foo()" // create our own object and return that one QScriptValue object = engine->newObject(); object.setPrototype(context->callee().property("prototype")); object.setProperty("baz", ...); return object; } } ... QScriptValue fooProto = engine->newObject(); fooProto.setProperty("whatever", ...); engine->globalObject().setProperty("Foo", engine->newFunction(Foo, fooProto)); //! [9] //! [10] class Bar { ... }; Q_DECLARE_METATYPE(Bar) QScriptValue constructBar(QScriptContext *context, QScriptEngine *engine) { Bar bar; // initialize from arguments in context, if desired ... return engine->toScriptValue(bar); } class BarPrototype : public QObject, public QScriptable { // provide the scriptable interface of this type using slots and properties ... }; ... // create and register the Bar prototype and constructor in the engine BarPrototype *barPrototypeObject = new BarPrototype(...); QScriptValue barProto = engine->newQObject(barPrototypeObject); engine->setDefaultPrototype(qMetaTypeId<Bar>, barProto); QScriptValue barCtor = engine->newFunction(constructBar, barProto); engine->globalObject().setProperty("Bar", barCtor); //! [10] //! [11] static QScriptValue getSetFoo(QScriptContext *context, QScriptEngine *engine) { QScriptValue callee = context->callee(); if (context->argumentCount() == 1) // writing? callee.setProperty("value", context->argument(0)); return callee.property("value"); } .... QScriptValue object = engine.newObject(); object.setProperty("foo", engine.newFunction(getSetFoo), QScriptValue::PropertyGetter | QScriptValue::PropertySetter); //! [11] //! [12] QScriptValue object = engine.newObject(); object.setProperty("foo", engine.newFunction(getFoo), QScriptValue::PropertyGetter); object.setProperty("foo", engine.newFunction(setFoo), QScriptValue::PropertySetter); //! [12] //! [13] Q_SCRIPT_DECLARE_QMETAOBJECT(QLineEdit, QWidget*) ... QScriptValue lineEditClass = engine.scriptValueFromQMetaObject<QLineEdit>(); engine.globalObject().setProperty("QLineEdit", lineEditClass); //! [13] //! [14] if (hello && world) print("hello world"); //! [14] //! [15] if (hello && //! [15] //! [16] 0 = 0 //! [16] //! [17] ./test.js //! [17] //! [18] foo["bar"] //! [18] //! [19] QScriptEngine engine; QScriptContext *context = engine.pushContext(); context->activationObject().setProperty("myArg", 123); engine.evaluate("var tmp = myArg + 42"); ... engine.popContext(); //! [19] //! [20] struct MyStruct { int x; int y; }; //! [20] //! [21] Q_DECLARE_METATYPE(MyStruct) //! [21] //! [22] QScriptValue toScriptValue(QScriptEngine *engine, const MyStruct &s) { QScriptValue obj = engine->newObject(); obj.setProperty("x", s.x); obj.setProperty("y", s.y); return obj; } void fromScriptValue(const QScriptValue &obj, MyStruct &s) { s.x = obj.property("x").toInt32(); s.y = obj.property("y").toInt32(); } //! [22] //! [23] qScriptRegisterMetaType(engine, toScriptValue, fromScriptValue); //! [23] //! [24] MyStruct s = qscriptvalue_cast<MyStruct>(context->argument(0)); ... MyStruct s2; s2.x = s.x + 10; s2.y = s.y + 20; QScriptValue v = engine->toScriptValue(s2); //! [24] //! [25] QScriptValue createMyStruct(QScriptContext *, QScriptEngine *engine) { MyStruct s; s.x = 123; s.y = 456; return engine->toScriptValue(s); } ... QScriptValue ctor = engine.newFunction(createMyStruct); engine.globalObject().setProperty("MyStruct", ctor); //! [25] //! [26] Q_DECLARE_METATYPE(QVector<int>) ... qScriptRegisterSequenceMetaType<QVector<int> >(engine); ... QVector<int> v = qscriptvalue_cast<QVector<int> >(engine->evaluate("[5, 1, 3, 2]")); qSort(v.begin(), v.end()); QScriptValue a = engine->toScriptValue(v); qDebug() << a.toString(); // outputs "[1, 2, 3, 5]" //! [26] //! [27] QScriptValue mySpecialQObjectConstructor(QScriptContext *context, QScriptEngine *engine) { QObject *parent = context->argument(0).toQObject(); QObject *object = new QObject(parent); return engine->newQObject(object, QScriptEngine::ScriptOwnership); } ... QScriptValue ctor = engine.newFunction(mySpecialQObjectConstructor); QScriptValue metaObject = engine.newQMetaObject(&QObject::staticMetaObject, ctor); engine.globalObject().setProperty("QObject", metaObject); QScriptValue result = engine.evaluate("new QObject()"); //! [27]


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