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LibJS: Convert FunctionObject::bind() to ThrowCompletionOr

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This commit is contained in:
Linus Groh 2022-01-04 22:15:07 +01:00
parent 245d486ba4
commit 62356cff40
Notes: sideshowbarker 2024-07-17 21:38:41 +09:00 
Author: https://github.com/linusg
Commit: https://github.com/SerenityOS/serenity/commit/62356cff409
Pull-request: https://github.com/SerenityOS/serenity/pull/11626
Reviewed-by: https://github.com/IdanHo ✅
3 changed files with 7 additions and 6 deletions
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9
Userland/Libraries/LibJS/Runtime/FunctionObject.cpp
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@ -6,6 +6,7 @@
#include <LibJS/Interpreter.h>
#include <LibJS/Runtime/BoundFunction.h>
#include <LibJS/Runtime/Completion.h>
#include <LibJS/Runtime/FunctionObject.h>
#include <LibJS/Runtime/GlobalObject.h>
@ -20,7 +21,7 @@ FunctionObject::~FunctionObject()
{
}
BoundFunction* FunctionObject::bind(Value bound_this_value, Vector<Value> arguments)
ThrowCompletionOr<BoundFunction*> FunctionObject::bind(Value bound_this_value, Vector<Value> arguments)
{
auto& vm = this->vm();
FunctionObject& target_function = is<BoundFunction>(*this) ? static_cast<BoundFunction&>(*this).bound_target_function() : *this;
@ -38,15 +39,15 @@ BoundFunction* FunctionObject::bind(Value bound_this_value, Vector<Value> argume
return TRY(bound_this_value.to_object(global_object()));
}
};
auto bound_this_object = TRY_OR_DISCARD(get_bound_this_object());
auto bound_this_object = TRY(get_bound_this_object());
i32 computed_length = 0;
auto length_property = TRY_OR_DISCARD(get(vm.names.length));
auto length_property = TRY(get(vm.names.length));
if (length_property.is_number())
computed_length = max(0, length_property.as_i32() - static_cast<i32>(arguments.size()));
Object* constructor_prototype = nullptr;
auto prototype_property = TRY_OR_DISCARD(target_function.get(vm.names.prototype));
auto prototype_property = TRY(target_function.get(vm.names.prototype));
if (prototype_property.is_object())
constructor_prototype = &prototype_property.as_object();

2
Userland/Libraries/LibJS/Runtime/FunctionObject.h
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@ -25,7 +25,7 @@ public:
virtual const FlyString& name() const = 0;
BoundFunction* bind(Value bound_this_value, Vector<Value> arguments);
ThrowCompletionOr<BoundFunction*> bind(Value bound_this_value, Vector<Value> arguments);
virtual bool is_strict_mode() const { return false; }

2
Userland/Libraries/LibJS/Runtime/FunctionPrototype.cpp
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@ -72,7 +72,7 @@ JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::bind)
arguments.remove(0);
}
return this_function.bind(bound_this_arg, move(arguments));
return TRY(this_function.bind(bound_this_arg, move(arguments)));
}
// 20.2.3.3 Function.prototype.call ( thisArg, ...args ), https://tc39.es/ecma262/#sec-function.prototype.call