mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-04-26 06:18:59 +00:00
a007b3c379
Each call frame now knows whether it's executing in strict mode. It's no longer necessary to access the scope stack to find this mode.
106 lines
3.5 KiB
C++
106 lines
3.5 KiB
C++
/*
|
|
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
|
* 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 <AK/StringBuilder.h>
|
|
#include <LibJS/Runtime/Error.h>
|
|
#include <LibJS/Runtime/GlobalObject.h>
|
|
#include <LibJS/Runtime/Object.h>
|
|
#include <LibJS/Runtime/Reference.h>
|
|
|
|
namespace JS {
|
|
|
|
void Reference::put(GlobalObject& global_object, Value value)
|
|
{
|
|
auto& vm = global_object.vm();
|
|
|
|
if (is_unresolvable()) {
|
|
throw_reference_error(global_object);
|
|
return;
|
|
}
|
|
|
|
if (is_local_variable() || is_global_variable()) {
|
|
if (is_local_variable())
|
|
vm.set_variable(m_name.to_string(), value, global_object);
|
|
else
|
|
global_object.put(m_name, value);
|
|
return;
|
|
}
|
|
|
|
if (!base().is_object() && vm.in_strict_mode()) {
|
|
vm.throw_exception<TypeError>(global_object, ErrorType::ReferencePrimitiveAssignment, m_name.to_string().characters());
|
|
return;
|
|
}
|
|
|
|
auto* object = base().to_object(global_object);
|
|
if (!object)
|
|
return;
|
|
|
|
object->put(m_name, value);
|
|
}
|
|
|
|
void Reference::throw_reference_error(GlobalObject& global_object)
|
|
{
|
|
auto property_name = m_name.to_string();
|
|
String message;
|
|
if (property_name.is_empty()) {
|
|
global_object.vm().throw_exception<ReferenceError>(global_object, ErrorType::ReferenceUnresolvable);
|
|
} else {
|
|
global_object.vm().throw_exception<ReferenceError>(global_object, ErrorType::UnknownIdentifier, property_name.characters());
|
|
}
|
|
}
|
|
|
|
Value Reference::get(GlobalObject& global_object)
|
|
{
|
|
auto& vm = global_object.vm();
|
|
|
|
if (is_unresolvable()) {
|
|
throw_reference_error(global_object);
|
|
return {};
|
|
}
|
|
|
|
if (is_local_variable() || is_global_variable()) {
|
|
Value value;
|
|
if (is_local_variable())
|
|
value = vm.get_variable(m_name.to_string(), global_object);
|
|
else
|
|
value = global_object.get(m_name);
|
|
if (vm.exception())
|
|
return {};
|
|
if (value.is_empty()) {
|
|
throw_reference_error(global_object);
|
|
return {};
|
|
}
|
|
return value;
|
|
}
|
|
|
|
auto* object = base().to_object(global_object);
|
|
if (!object)
|
|
return {};
|
|
|
|
return object->get(m_name).value_or(js_undefined());
|
|
}
|
|
|
|
}
|