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LibJS: Move ordinary_call_bind_this() to ECMAScriptFunctionObject

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Now that it only needs to deal with ECMAScriptFunctionObject via
internal_call() / internal_construct(), we can:

- Remove the generic FunctionObject parameter
- Move it from the VM to ECMAScriptFunctionObject
- Make it private
This commit is contained in:
Linus Groh 2021-10-08 21:15:53 +01:00
parent 25bcd36116
commit 53af66d57d
4 changed files with 52 additions and 33 deletions
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28
Userland/Libraries/LibJS/Runtime/VM.cpp
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@ -525,34 +525,6 @@ Value VM::get_new_target()
return verify_cast<FunctionEnvironment>(env).new_target();
}
// 10.2.1.2 OrdinaryCallBindThis ( F, calleeContext, thisArgument ), https://tc39.es/ecma262/#sec-ordinarycallbindthis
void VM::ordinary_call_bind_this(FunctionObject& function, ExecutionContext& callee_context, Value this_argument)
{
auto* callee_realm = function.realm();
auto* local_environment = callee_context.lexical_environment;
auto& function_environment = verify_cast<FunctionEnvironment>(*local_environment);
// This almost as the spec describes it however we sometimes don't have callee_realm when dealing
// with proxies and arrow functions however this does seemingly achieve spec like behavior.
if (!callee_realm || (is<ECMAScriptFunctionObject>(function) && static_cast<ECMAScriptFunctionObject&>(function).this_mode() == ECMAScriptFunctionObject::ThisMode::Lexical)) {
return;
}
Value this_value;
if (function.is_strict_mode()) {
this_value = this_argument;
} else if (this_argument.is_nullish()) {
auto& global_environment = callee_realm->global_environment();
this_value = &global_environment.global_this_value();
} else {
this_value = this_argument.to_object(function.global_object());
}
function_environment.bind_this_value(function.global_object(), this_value);
callee_context.this_value = this_value;
}
// NOTE: This is only here because there's a million invocations of vm.call() - it used to be tied to the VM in weird ways.
// We should update all of those and then remove this, along with the call() template functions in VM.h, and use the standalone call() AO.
ThrowCompletionOr<Value> VM::call_internal(FunctionObject& function, Value this_value, Optional<MarkedValueList> arguments)