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|
<!--
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<head>
<title>WPEJavaScriptCore.Context</title>
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<div class="section namespace">
<h3><a href="index.html">WPEJavaScriptCore</a></h3>
<p>API Version: 2.0</p>
<p>Library Version: 2.48.6</p>
</div>
<div class="section">
<h5>Type</h5>
<div class="links">
<a class="current" href="class.Context.html#description">Context</a>
</div>
</div>
<div class="section">
<h5>Constructors</h5>
<div class="links">
<a class="ctor" href="ctor.Context.new.html">new</a>
<a class="ctor" href="ctor.Context.new_with_virtual_machine.html">new_with_virtual_machine</a>
</div>
</div>
<div class="section">
<h5>Functions</h5>
<div class="links">
<a class="func" href="type_func.Context.get_current.html">get_current</a>
</div>
</div>
<div class="section">
<h5>Instance methods</h5>
<div class="links">
<a class="method" href="method.Context.check_syntax.html">check_syntax</a>
<a class="method" href="method.Context.clear_exception.html">clear_exception</a>
<a class="method" href="method.Context.evaluate.html">evaluate</a>
<a class="method" href="method.Context.evaluate_in_object.html">evaluate_in_object</a>
<a class="method" href="method.Context.evaluate_with_source_uri.html">evaluate_with_source_uri</a>
<a class="method" href="method.Context.get_exception.html">get_exception</a>
<a class="method" href="method.Context.get_global_object.html">get_global_object</a>
<a class="method" href="method.Context.get_value.html">get_value</a>
<a class="method" href="method.Context.get_virtual_machine.html">get_virtual_machine</a>
<a class="method" href="method.Context.pop_exception_handler.html">pop_exception_handler</a>
<a class="method" href="method.Context.push_exception_handler.html">push_exception_handler</a>
<a class="method" href="method.Context.register_class.html">register_class</a>
<a class="method" href="method.Context.set_value.html">set_value</a>
<a class="method" href="method.Context.throw.html">throw</a>
<a class="method" href="method.Context.throw_exception.html">throw_exception</a>
<a class="method" href="method.Context.throw_printf.html">throw_printf</a>
<a class="method" href="method.Context.throw_with_name.html">throw_with_name</a>
<a class="method" href="method.Context.throw_with_name_printf.html">throw_with_name_printf</a>
</div>
</div>
<div class="section">
<h5>Properties</h5>
<div class="links">
<a class="property" href="property.Context.virtual-machine.html">virtual-machine</a>
</div>
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<section id="main" class="content">
<header>
<h3>Class</h3>
<h1 aria-label="Name"><a href="index.html">WPEJavaScriptCore</a><span class="sep" role="presentation"></span>Context</h1>
</header>
<section>
<summary>
<div class="docblock">
<p></p>
</div>
<div class="toggle-wrapper">
<h4 id="description" style="display:flex;">
Description
<a href="#description" class="anchor"></a>
<a class="srclink" title="go to source location" href="https://github.com/WebKit/WebKit/tree/Source/JavaScriptCore/API/glib/JSCContext.cpp#L42">[src]</a>
</h4>
<pre><code>final class WPEJavaScriptCore.Context : GObject.Object {
/* No available fields */
}</pre></code>
<div class="docblock">
<p>JSCContext represents a JavaScript execution context, where all operations
take place and where the values will be associated.</p>
<p>When a new context is created, a global object is allocated and the built-in JavaScript
objects (Object, Function, String, Array) are populated. You can execute JavaScript in
the context by using <code>jsc_context_evaluate()</code> or jsc_context_evaluate_with_source_uri().
It’s also possible to register custom objects in the context with jsc_context_register_class().</p>
</div>
<div class="docblock">
</div>
</div>
</summary>
<div class="toggle-wrapper hierarchy">
<h4 id="hierarchy">
Hierarchy
<a href="#hierarchy" class="anchor"></a>
</h4>
<div class="docblock" alt="Hierarchy for WPEJavaScriptCore.Context">
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"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
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-->
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viewBox="0.00 0.00 90.90 116.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 112)">
<title>hierarchy</title>
<!-- this -->
<g id="node1" class="node">
<title>this</title>
<g id="a_node1"><a xlink:title="JSCContext">
<path fill="none" stroke="#000000" d="M70.8444,-36C70.8444,-36 12.0518,-36 12.0518,-36 6.0518,-36 .0518,-30 .0518,-24 .0518,-24 .0518,-12 .0518,-12 .0518,-6 6.0518,0 12.0518,0 12.0518,0 70.8444,0 70.8444,0 76.8444,0 82.8444,-6 82.8444,-12 82.8444,-12 82.8444,-24 82.8444,-24 82.8444,-30 76.8444,-36 70.8444,-36"/>
<text text-anchor="middle" x="41.4481" y="-13.8" font-family="Times,serif" font-size="14.00" fill="#000000">JSCContext</text>
</a>
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</g>
<!-- ancestor_0 -->
<g id="node2" class="node">
<title>ancestor_0</title>
<g id="a_node2"><a xlink:title="GObject.Object">
<path fill="none" stroke="#000000" d="M61.3731,-108C61.3731,-108 21.5231,-108 21.5231,-108 15.5231,-108 9.5231,-102 9.5231,-96 9.5231,-96 9.5231,-84 9.5231,-84 9.5231,-78 15.5231,-72 21.5231,-72 21.5231,-72 61.3731,-72 61.3731,-72 67.3731,-72 73.3731,-78 73.3731,-84 73.3731,-84 73.3731,-96 73.3731,-96 73.3731,-102 67.3731,-108 61.3731,-108"/>
<text text-anchor="middle" x="41.4481" y="-85.8" font-family="Times,serif" font-size="14.00" fill="#000000">GObject</text>
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<g id="edge1" class="edge">
<title>ancestor_0--this</title>
<path fill="none" stroke="#000000" d="M41.4481,-71.8314C41.4481,-61 41.4481,-47.2876 41.4481,-36.4133"/>
</g>
</g>
</svg>
</div>
</div>
<div class="toggle-wrapper ancestors">
<h4 id="ancestors">
Ancestors
<a href="#ancestors" class="anchor"></a>
</h4>
<div class="docblock">
<ul>
<li class="class"><a class="external" href="javascript:void(0)" data-link="class.Object.html" data-namespace="GObject">GObject</a></li>
</ul>
</div>
</div>
<div class="toggle-wrapper constructors">
<h4 id="constructors">
Constructors
<a href="#constructors" class="anchor"></a>
</h4>
<div class="docblock">
<div class="">
<h6><a href="ctor.Context.new.html">jsc_context_new</a></h6>
<div class="docblock">
<p>Create a new <code>JSCContext</code>. The context is created in a new <code>JSCVirtualMachine</code>.
Use <code>jsc_context_new_with_virtual_machine()</code> to create a new <code>JSCContext</code> in an
existing <code>JSCVirtualMachine</code>.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="ctor.Context.new_with_virtual_machine.html">jsc_context_new_with_virtual_machine</a></h6>
<div class="docblock">
<p>Create a new <code>JSCContext</code> in <code>virtual_machine</code>.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
</div>
</div>
<div class="toggle-wrapper methods">
<h4 id="type-functions">
Functions
<a href="#type-functions" class="anchor"></a>
</h4>
<div class="docblock">
<div class="">
<h6><a href="type_func.Context.get_current.html">jsc_context_get_current</a></h6>
<div class="docblock">
<p>Get the <code>JSCContext</code> that is currently executing a function. This should only be
called within a function or method callback, otherwise <code>NULL</code> will be returned.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
</div>
</div>
<div class="toggle-wrapper methods">
<h4 id="methods">
Instance methods
<a href="#methods" class="anchor"></a>
</h4>
<div class="docblock">
<div class="">
<h6><a href="method.Context.check_syntax.html">jsc_context_check_syntax</a></h6>
<div class="docblock">
<p>Check the given <code>code</code> in <code>context</code> for syntax errors. The <code>line_number</code> is the starting line number in <code>uri</code>;
the value is one-based so the first line is 1. <code>uri</code> and <code>line_number</code> are only used to fill the <code>exception</code>.
In case of errors <code>exception</code> will be set to a new <code>JSCException</code> with the details. You can pass <code>NULL</code> to
<code>exception</code> to ignore the error details.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.clear_exception.html">jsc_context_clear_exception</a></h6>
<div class="docblock">
<p>Clear the uncaught exception in <code>context</code> if any.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.evaluate.html">jsc_context_evaluate</a></h6>
<div class="docblock">
<p>Evaluate <code>code</code> in <code>context</code>.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.evaluate_in_object.html">jsc_context_evaluate_in_object</a></h6>
<div class="docblock">
<p>Evaluate <code>code</code> and create an new object where symbols defined in <code>code</code> will be added as properties,
instead of being added to <code>context</code> global object. The new object is returned as <code>object</code> parameter.
Similar to how <code>jsc_value_new_object()</code> works, if <code>object_instance</code> is not <code>NULL</code> <code>object_class</code> must be provided too.
The <code>line_number</code> is the starting line number in <code>uri</code>; the value is one-based so the first line is 1.
<code>uri</code> and <code>line_number</code> will be shown in exceptions and they don’t affect the behavior of the script.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.evaluate_with_source_uri.html">jsc_context_evaluate_with_source_uri</a></h6>
<div class="docblock">
<p>Evaluate <code>code</code> in <code>context</code> using <code>uri</code> as the source <span class="caps">URI</span>. The <code>line_number</code> is the starting line number
in <code>uri</code>; the value is one-based so the first line is 1. <code>uri</code> and <code>line_number</code> will be shown in exceptions and
they don’t affect the behavior of the script.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.get_exception.html">jsc_context_get_exception</a></h6>
<div class="docblock">
<p>Get the last unhandled exception thrown in <code>context</code> by <span class="caps">API</span> functions calls.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.get_global_object.html">jsc_context_get_global_object</a></h6>
<div class="docblock">
<p>Get a <code>JSCValue</code> referencing the <code>context</code> global object.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.get_value.html">jsc_context_get_value</a></h6>
<div class="docblock">
<p>Get a property of <code>context</code> global object with <code>name</code>.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.get_virtual_machine.html">jsc_context_get_virtual_machine</a></h6>
<div class="docblock">
<p>Get the <code>JSCVirtualMachine</code> where <code>context</code> was created.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.pop_exception_handler.html">jsc_context_pop_exception_handler</a></h6>
<div class="docblock">
<p>Remove the last <code>JSCExceptionHandler</code> previously pushed to <code>context</code> with jsc_context_push_exception_handler().</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.push_exception_handler.html">jsc_context_push_exception_handler</a></h6>
<div class="docblock">
<p>Push an exception handler in <code>context</code>. Whenever a JavaScript exception happens in
the <code>JSCContext</code>, the given <code>handler</code> will be called. The default <code>JSCExceptionHandler</code>
simply calls <code>jsc_context_throw_exception()</code> to throw the exception to the <code>JSCContext</code>.
If you don’t want to catch the exception, but only get notified about it, call
<code>jsc_context_throw_exception()</code> in <code>handler</code> like the default one does.
The last exception handler pushed is the only one used by the <code>JSCContext</code>, use
<code>jsc_context_pop_exception_handler()</code> to remove it and set the previous one. When <code>handler</code>
is removed from the context, <code>destroy_notify</code> i called with <code>user_data</code> as parameter.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.register_class.html">jsc_context_register_class</a></h6>
<div class="docblock">
<p>Register a custom class in <code>context</code> using the given <code>name</code>. If the new class inherits from
another <code>JSCClass</code>, the parent should be passed as <code>parent_class</code>, otherwise <code>NULL</code> should be
used. The optional <code>vtable</code> parameter allows to provide a custom implementation for handling
the class, for example, to handle external properties not added to the prototype.
When an instance of the <code>JSCClass</code> is cleared in the context, <code>destroy_notify</code> is called with
the instance as parameter.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.set_value.html">jsc_context_set_value</a></h6>
<div class="docblock">
<p>Set a property of <code>context</code> global object with <code>name</code> and <code>value</code>.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.throw.html">jsc_context_throw</a></h6>
<div class="docblock">
<p>Throw an exception to <code>context</code> using the given error message. The created <code>JSCException</code>
can be retrieved with jsc_context_get_exception().</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.throw_exception.html">jsc_context_throw_exception</a></h6>
<div class="docblock">
<p>Throw <code>exception</code> to <code>context</code>.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.throw_printf.html">jsc_context_throw_printf</a></h6>
<div class="docblock">
<p>Throw an exception to <code>context</code> using the given formatted string as error message.
The created <code>JSCException</code> can be retrieved with jsc_context_get_exception().</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.throw_with_name.html">jsc_context_throw_with_name</a></h6>
<div class="docblock">
<p>Throw an exception to <code>context</code> using the given error name and message. The created <code>JSCException</code>
can be retrieved with jsc_context_get_exception().</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
<div class="">
<h6><a href="method.Context.throw_with_name_printf.html">jsc_context_throw_with_name_printf</a></h6>
<div class="docblock">
<p>Throw an exception to <code>context</code> using the given error name and the formatted string as error message.
The created <code>JSCException</code> can be retrieved with jsc_context_get_exception().</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
</div>
<div class="toggle-wrapper default-hide ancestor-methods"><h5 style="display:block;">Methods inherited from <a class="external" href="javascript:void(0)" data-link="class.Object.html" data-namespace="GObject">GObject</a> (43)</h5>
<div class="docblock">
<div class="docblock">
<p>Please see <a class="external" href="javascript:void(0)" data-link="class.Object.html#methods" data-namespace="GObject">GObject</a> for a full list of methods.</em></p>
</div>
</div>
</div>
</div>
<div class="toggle-wrapper properties">
<h4 id="properties">
Properties
<a href="#properties" class="anchor"></a>
</h4>
<div class="docblock">
<div class="">
<h6><a href="property.Context.virtual-machine.html">WPEJavaScriptCore.Context:virtual-machine</a></h6>
<div class="docblock">
<p>The <code>JSCVirtualMachine</code> in which the context was created.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
</div>
</div>
<div class="signals toggle-wrapper">
<h4 id="signals">
Signals
<a href="#signals" class="anchor"></a>
</h4>
<div class="toggle-wrapper default-hide ancestor-signals"><h5 style="display:block;">Signals inherited from <a class="external" href="javascript:void(0)" data-link="class.Object.html" data-namespace="GObject">GObject</a> (1)</h5>
<div class="docblock">
<h6><a class="external" href="javascript:void(0)" data-namespace="GObject" data-link="signal.Object.notify.html">GObject::notify</a></h6>
<div class="docblock">
<p>The notify signal is emitted on an object when one of its properties has
its value set through g_object_set_property(), g_object_set(), et al.</p>
</div>
<div class="docblock">
<p></p>
</div>
</div>
</div>
</div>
<div class="class toggle-wrapper default-hide">
<h4 id="class-struct">
Class structure
<a href="#class-struct" class="anchor"></a>
</h4>
<div class="docblock">
<pre><code>struct WPEJavaScriptCoreContextClass {
GObjectClass parent_class;
}</code></pre>
</div>
<div class="docblock">
No description available.
</div>
<div class="docblock">
<h6>Class members</h6>
<dl class="members">
<dt><code>parent_class: GObjectClass</code></dt>
<dd>No description available.</dd>
</dd>
</div>
</div>
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