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LibJS: Add Proxy objects

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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
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2
Libraries/LibJS/AST.cpp
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@ -359,7 +359,7 @@ Value ForInStatement::execute(Interpreter& interpreter) const
return {};
auto* object = rhs_result.to_object(interpreter);
while (object) {
auto property_names = object->get_own_properties(*object, Object::GetOwnPropertyMode::Key, Attribute::Enumerable);
auto property_names = object->get_own_properties(*object, Object::GetOwnPropertyMode::Key, true);
for (auto& property_name : property_names.as_object().indexed_properties()) {
interpreter.set_variable(variable_name, property_name.value_and_attributes(object).value);
if (interpreter.exception())