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LibJS: Use Value::get_method() a bunch

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Linus Groh 2021-03-02 18:06:28 +01:00 committed by Andreas Kling
parent 1b43a6ef2d
commit e7ef729db3
Notes: sideshowbarker 2024-07-18 21:46:06 +09:00 
Author: https://github.com/linusg
Commit: https://github.com/SerenityOS/serenity/commit/e7ef729db30
Pull-request: https://github.com/SerenityOS/serenity/pull/5607
3 changed files with 42 additions and 103 deletions
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1
Userland/Libraries/LibJS/Runtime/ErrorTypes.h
View file

@ -125,7 +125,6 @@
M(ProxyHasExistingNonExtensible, "Proxy handler's has trap violates invariant: a property " \
"cannot be reported as non-existent if it exists on the target and the target is " \
"non-extensible") \
M(ProxyInvalidTrap, "Proxy handler's {} trap wasn't undefined, null, or callable") \
M(ProxyIsExtensibleReturn, "Proxy handler's isExtensible trap violates invariant: " \
"return value must match the target's extensibility") \
M(ProxyPreventExtensionsReturn, "Proxy handler's preventExtensions trap violates " \

131
Userland/Libraries/LibJS/Runtime/ProxyObject.cpp
View file

@ -1,5 +1,6 @@
/*
* Copyright (c) 2020, Matthew Olsson <matthewcolsson@gmail.com>
* Copyright (c) 2021, Linus Groh <mail@linusgroh.de>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -80,17 +81,12 @@ Object* ProxyObject::prototype()
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyRevoked);
return nullptr;
}
auto trap = m_handler.get(vm.names.getPrototypeOf);
auto trap = get_method(global_object(), Value(&m_handler), vm.names.getPrototypeOf);
if (vm.exception())
return nullptr;
if (trap.is_empty() || trap.is_nullish())
if (!trap)
return m_target.prototype();
if (!trap.is_function()) {
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyInvalidTrap, "getPrototypeOf");
return nullptr;
}
auto trap_result = vm.call(trap.as_function(), Value(&m_handler), Value(&m_target));
auto trap_result = vm.call(*trap, Value(&m_handler), Value(&m_target));
if (vm.exception())
return nullptr;
if (!trap_result.is_object() && !trap_result.is_null()) {
@ -131,17 +127,12 @@ bool ProxyObject::set_prototype(Object* object)
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyRevoked);
return false;
}
auto trap = m_handler.get(vm.names.setPrototypeOf);
auto trap = get_method(global_object(), Value(&m_handler), vm.names.setPrototypeOf);
if (vm.exception())
return false;
if (trap.is_empty() || trap.is_nullish())
if (!trap)
return m_target.set_prototype(object);
if (!trap.is_function()) {
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyInvalidTrap, "setPrototypeOf");
return false;
}
auto trap_result = vm.call(trap.as_function(), Value(&m_handler), Value(&m_target), Value(object));
auto trap_result = vm.call(*trap, Value(&m_handler), Value(&m_target), Value(object));
if (vm.exception() || !trap_result.to_boolean())
return false;
if (m_target.is_extensible())
@ -163,17 +154,12 @@ bool ProxyObject::is_extensible() const
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyRevoked);
return false;
}
auto trap = m_handler.get(vm.names.isExtensible);
auto trap = get_method(global_object(), Value(&m_handler), vm.names.isExtensible);
if (vm.exception())
return false;
if (trap.is_empty() || trap.is_nullish())
if (!trap)
return m_target.is_extensible();
if (!trap.is_function()) {
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyInvalidTrap, "isExtensible");
return {};
}
auto trap_result = vm.call(trap.as_function(), Value(&m_handler), Value(&m_target));
auto trap_result = vm.call(*trap, Value(&m_handler), Value(&m_target));
if (vm.exception())
return false;
if (trap_result.to_boolean() != m_target.is_extensible()) {
@ -191,17 +177,12 @@ bool ProxyObject::prevent_extensions()
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyRevoked);
return false;
}
auto trap = m_handler.get(vm.names.preventExtensions);
auto trap = get_method(global_object(), Value(&m_handler), vm.names.preventExtensions);
if (vm.exception())
return false;
if (trap.is_empty() || trap.is_nullish())
if (!trap)
return m_target.prevent_extensions();
if (!trap.is_function()) {
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyInvalidTrap, "preventExtensions");
return {};
}
auto trap_result = vm.call(trap.as_function(), Value(&m_handler), Value(&m_target));
auto trap_result = vm.call(*trap, Value(&m_handler), Value(&m_target));
if (vm.exception())
return false;
if (trap_result.to_boolean() && m_target.is_extensible()) {
@ -219,17 +200,12 @@ Optional<PropertyDescriptor> ProxyObject::get_own_property_descriptor(const Prop
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyRevoked);
return {};
}
auto trap = m_handler.get(vm.names.getOwnPropertyDescriptor);
auto trap = get_method(global_object(), Value(&m_handler), vm.names.getOwnPropertyDescriptor);
if (vm.exception())
return {};
if (trap.is_empty() || trap.is_nullish())
if (!trap)
return m_target.get_own_property_descriptor(name);
if (!trap.is_function()) {
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyInvalidTrap, "getOwnPropertyDescriptor");
return {};
}
auto trap_result = vm.call(trap.as_function(), Value(&m_handler), Value(&m_target), name.to_value(vm));
auto trap_result = vm.call(*trap, Value(&m_handler), Value(&m_target), name.to_value(vm));
if (vm.exception())
return {};
if (!trap_result.is_object() && !trap_result.is_undefined()) {
@ -275,17 +251,12 @@ bool ProxyObject::define_property(const StringOrSymbol& property_name, const Obj
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyRevoked);
return false;
}
auto trap = m_handler.get(vm.names.defineProperty);
auto trap = get_method(global_object(), Value(&m_handler), vm.names.defineProperty);
if (vm.exception())
return false;
if (trap.is_empty() || trap.is_nullish())
if (!trap)
return m_target.define_property(property_name, descriptor, throw_exceptions);
if (!trap.is_function()) {
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyInvalidTrap, "defineProperty");
return false;
}
auto trap_result = vm.call(trap.as_function(), Value(&m_handler), Value(&m_target), property_name.to_value(vm), Value(const_cast<Object*>(&descriptor)));
auto trap_result = vm.call(*trap, Value(&m_handler), Value(&m_target), property_name.to_value(vm), Value(const_cast<Object*>(&descriptor)));
if (vm.exception() || !trap_result.to_boolean())
return false;
auto target_desc = m_target.get_own_property_descriptor(property_name);
@ -327,17 +298,12 @@ bool ProxyObject::has_property(const PropertyName& name) const
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyRevoked);
return false;
}
auto trap = m_handler.get(vm.names.has);
auto trap = get_method(global_object(), Value(&m_handler), vm.names.has);
if (vm.exception())
return false;
if (trap.is_empty() || trap.is_nullish())
if (!trap)
return m_target.has_property(name);
if (!trap.is_function()) {
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyInvalidTrap, "has");
return false;
}
auto trap_result = vm.call(trap.as_function(), Value(&m_handler), Value(&m_target), name.to_value(vm));
auto trap_result = vm.call(*trap, Value(&m_handler), Value(&m_target), name.to_value(vm));
if (vm.exception())
return false;
if (!trap_result.to_boolean()) {
@ -368,17 +334,12 @@ Value ProxyObject::get(const PropertyName& name, Value receiver) const
}
if (receiver.is_empty())
receiver = Value(const_cast<ProxyObject*>(this));
auto trap = m_handler.get(vm.names.get);
auto trap = get_method(global_object(), Value(&m_handler), vm.names.get);
if (vm.exception())
return {};
if (trap.is_empty() || trap.is_nullish())
if (!trap)
return m_target.get(name, receiver);
if (!trap.is_function()) {
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyInvalidTrap, "get");
return {};
}
auto trap_result = vm.call(trap.as_function(), Value(&m_handler), Value(&m_target), name.to_value(vm), receiver);
auto trap_result = vm.call(*trap, Value(&m_handler), Value(&m_target), name.to_value(vm), receiver);
if (vm.exception())
return {};
auto target_desc = m_target.get_own_property_descriptor(name);
@ -406,16 +367,12 @@ bool ProxyObject::put(const PropertyName& name, Value value, Value receiver)
}
if (receiver.is_empty())
receiver = Value(const_cast<ProxyObject*>(this));
auto trap = m_handler.get(vm.names.set);
auto trap = get_method(global_object(), Value(&m_handler), vm.names.set);
if (vm.exception())
return false;
if (trap.is_empty() || trap.is_nullish())
if (!trap)
return m_target.put(name, value, receiver);
if (!trap.is_function()) {
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyInvalidTrap, "set");
return false;
}
auto trap_result = vm.call(trap.as_function(), Value(&m_handler), Value(&m_target), name.to_value(vm), value, receiver);
auto trap_result = vm.call(*trap, Value(&m_handler), Value(&m_target), name.to_value(vm), value, receiver);
if (vm.exception() || !trap_result.to_boolean())
return false;
auto target_desc = m_target.get_own_property_descriptor(name);
@ -440,17 +397,12 @@ Value ProxyObject::delete_property(const PropertyName& name)
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyRevoked);
return {};
}
auto trap = m_handler.get(vm.names.deleteProperty);
auto trap = get_method(global_object(), Value(&m_handler), vm.names.deleteProperty);
if (vm.exception())
return {};
if (trap.is_empty() || trap.is_nullish())
if (!trap)
return m_target.delete_property(name);
if (!trap.is_function()) {
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyInvalidTrap, "deleteProperty");
return {};
}
auto trap_result = vm.call(trap.as_function(), Value(&m_handler), Value(&m_target), name.to_value(vm));
auto trap_result = vm.call(*trap, Value(&m_handler), Value(&m_target), name.to_value(vm));
if (vm.exception())
return {};
if (!trap_result.to_boolean())
@ -485,15 +437,11 @@ Value ProxyObject::call()
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyRevoked);
return {};
}
auto trap = m_handler.get(vm.names.apply);
auto trap = get_method(global_object(), Value(&m_handler), vm.names.apply);
if (vm.exception())
return {};
if (trap.is_empty() || trap.is_nullish())
if (!trap)
return static_cast<Function&>(m_target).call();
if (!trap.is_function()) {
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyInvalidTrap, "apply");
return {};
}
MarkedValueList arguments(heap());
arguments.append(Value(&m_target));
arguments.append(Value(&m_handler));
@ -504,7 +452,7 @@ Value ProxyObject::call()
});
arguments.append(arguments_array);
return vm.call(trap.as_function(), Value(&m_handler), move(arguments));
return vm.call(*trap, Value(&m_handler), move(arguments));
}
Value ProxyObject::construct(Function& new_target)
@ -518,16 +466,11 @@ Value ProxyObject::construct(Function& new_target)
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyRevoked);
return {};
}
auto trap = m_handler.get(vm.names.construct);
auto trap = get_method(global_object(), Value(&m_handler), vm.names.construct);
if (vm.exception())
return {};
if (trap.is_empty() || trap.is_nullish())
if (!trap)
return static_cast<Function&>(m_target).construct(new_target);
if (!trap.is_function()) {
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyInvalidTrap, "construct");
return {};
}
MarkedValueList arguments(vm.heap());
arguments.append(Value(&m_target));
auto arguments_array = Array::create(global_object());
@ -536,7 +479,7 @@ Value ProxyObject::construct(Function& new_target)
});
arguments.append(arguments_array);
arguments.append(Value(&new_target));
auto result = vm.call(trap.as_function(), Value(&m_handler), move(arguments));
auto result = vm.call(*trap, Value(&m_handler), move(arguments));
if (!result.is_object()) {
vm.throw_exception<TypeError>(global_object(), ErrorType::ProxyConstructBadReturnType);
return {};

13
Userland/Libraries/LibJS/Runtime/Value.cpp
View file

@ -929,18 +929,15 @@ Value instance_of(GlobalObject& global_object, Value lhs, Value rhs)
vm.throw_exception<TypeError>(global_object, ErrorType::NotAnObject, rhs.to_string_without_side_effects());
return {};
}
auto has_instance_method = rhs.as_object().get(vm.well_known_symbol_has_instance());
if (!has_instance_method.is_empty()) {
if (!has_instance_method.is_function()) {
vm.throw_exception<TypeError>(global_object, ErrorType::NotAFunction, has_instance_method.to_string_without_side_effects());
return {};
}
auto has_instance_result = vm.call(has_instance_method.as_function(), rhs, lhs);
auto has_instance_method = get_method(global_object, Value(&rhs.as_object()), vm.well_known_symbol_has_instance());
if (vm.exception())
return {};
if (has_instance_method) {
auto has_instance_result = vm.call(*has_instance_method, rhs, lhs);
if (vm.exception())
return {};
return Value(has_instance_result.to_boolean());
}
if (!rhs.is_function()) {
vm.throw_exception<TypeError>(global_object, ErrorType::NotAFunction, rhs.to_string_without_side_effects());
return {};