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LibJS: Add the remaining generator objects

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- %GeneratorFunction%
- %GeneratorFunction.prototype%
- %GeneratorFunction.prototype.prototype%
- %Generator%.prototype
This commit is contained in:
Matthew Olsson 2021-06-15 00:04:08 -07:00 • committed by Linus Groh
parent b205c9814a
commit 22b17219ff
14 changed files with 302 additions and 67 deletions
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26
Userland/Libraries/LibJS/Runtime/ScriptFunction.cpp
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@ -15,6 +15,7 @@
#include <LibJS/Runtime/Array.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/GeneratorObject.h>
#include <LibJS/Runtime/GeneratorObjectPrototype.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/NativeFunction.h>
#include <LibJS/Runtime/ScriptFunction.h>
@ -36,7 +37,16 @@ static ScriptFunction* typed_this(VM& vm, GlobalObject& global_object)
ScriptFunction* ScriptFunction::create(GlobalObject& global_object, const FlyString& name, const Statement& body, Vector<FunctionNode::Parameter> parameters, i32 m_function_length, ScopeObject* parent_scope, FunctionKind kind, bool is_strict, bool is_arrow_function)
{
return global_object.heap().allocate<ScriptFunction>(global_object, global_object, name, body, move(parameters), m_function_length, parent_scope, *global_object.function_prototype(), kind, is_strict, is_arrow_function);
Object* prototype = nullptr;
switch (kind) {
case FunctionKind::Regular:
prototype = global_object.function_prototype();
break;
case FunctionKind::Generator:
prototype = global_object.generator_function_prototype();
break;
}
return global_object.heap().allocate<ScriptFunction>(global_object, global_object, name, body, move(parameters), m_function_length, parent_scope, *prototype, kind, is_strict, is_arrow_function);
}
ScriptFunction::ScriptFunction(GlobalObject& global_object, const FlyString& name, const Statement& body, Vector<FunctionNode::Parameter> parameters, i32 m_function_length, ScopeObject* parent_scope, Object& prototype, FunctionKind kind, bool is_strict, bool is_arrow_function)
@ -57,8 +67,16 @@ void ScriptFunction::initialize(GlobalObject& global_object)
auto& vm = this->vm();
Function::initialize(global_object);
if (!m_is_arrow_function) {
Object* prototype = vm.heap().allocate<Object>(global_object, *global_object.new_script_function_prototype_object_shape());
prototype->define_property(vm.names.constructor, this, Attribute::Writable | Attribute::Configurable);
auto* prototype = vm.heap().allocate<Object>(global_object, *global_object.new_script_function_prototype_object_shape());
switch (m_kind) {
case FunctionKind::Regular:
prototype->define_property(vm.names.constructor, this, Attribute::Writable | Attribute::Configurable);
break;
case FunctionKind::Generator:
// prototype is "g1.prototype" in figure-2 (https://tc39.es/ecma262/img/figure-2.png)
prototype->set_prototype(global_object.generator_object_prototype());
break;
}
define_property(vm.names.prototype, prototype, Attribute::Writable);
}
define_native_property(vm.names.length, length_getter, {}, Attribute::Configurable);
@ -205,7 +223,7 @@ Value ScriptFunction::call()
Value ScriptFunction::construct(Function&)
{
if (m_is_arrow_function) {
if (m_is_arrow_function || m_kind == FunctionKind::Generator) {
vm().throw_exception<TypeError>(global_object(), ErrorType::NotAConstructor, m_name);
return {};
}