RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 07:48:11 +00:00
Code Issues Activity Actions

LibJS: Add Proxy objects

Browse source 
Includes all traps except the following: [[Call]], [[Construct]],
[[OwnPropertyKeys]].

An important implication of this commit is that any call to any virtual
Object method has the potential to throw an exception. These methods
were not checked in this commit -- a future commit will have to protect
these various method calls throughout the codebase.
This commit is contained in:
Matthew Olsson 2020-06-03 14:34:52 -07:00 • committed by Andreas Kling
parent 58a72e9b81
commit 39ad42defd
29 changed files with 1697 additions and 54 deletions
Download patch file Download diff file Expand all files Collapse all files

68
Libraries/LibJS/Runtime/ProxyConstructor.cpp Normal file
View file

@ -0,0 +1,68 @@
/*
* Copyright (c) 2020, Matthew Olsson <matthewcolsson@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <LibJS/Interpreter.h>
#include <LibJS/Runtime/Array.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/ProxyConstructor.h>
#include <LibJS/Runtime/ProxyObject.h>
namespace JS {
ProxyConstructor::ProxyConstructor()
: NativeFunction("Proxy", *interpreter().global_object().function_prototype())
{
define_property("prototype", interpreter().global_object().proxy_prototype(), 0);
define_property("length", Value(2), Attribute::Configurable);
}
ProxyConstructor::~ProxyConstructor()
{
}
Value ProxyConstructor::call(Interpreter& interpreter)
{
return interpreter.throw_exception<TypeError>("Proxy must be called with the \"new\" operator");
}
Value ProxyConstructor::construct(Interpreter& interpreter)
{
if (interpreter.argument_count() < 2)
return interpreter.throw_exception<TypeError>("Proxy requires at least two arguments");
auto target = interpreter.argument(0);
auto handler = interpreter.argument(1);
if (!target.is_object())
return interpreter.throw_exception<TypeError>(String::format("Expected target argument of Proxy constructor to be object, got %s", target.to_string_without_side_effects().characters()));
if (!handler.is_object())
return interpreter.throw_exception<TypeError>(String::format("Expected handler argument of Proxy constructor to be object, got %s", handler.to_string_without_side_effects().characters()));
return ProxyObject::create(interpreter.global_object(), target.as_object(), handler.as_object());
}
}