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LibWeb: Make WrapperGenerator generate nullable wrapper types

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Previously it was not doing so, and some code relied on this not being
the case.

In particular, set_caption, set_t_head and set_t_foot in
HTMLTableElement relied on this. This commit is not here to fix this,
so I added an assertion to make it equivalent to a reference for now.
This commit is contained in:
Luke 2021-07-05 05:45:20 +01:00 • committed by Andreas Kling
parent 62c015dc96
commit a826df773e
5 changed files with 43 additions and 16 deletions
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20
Userland/Libraries/LibWeb/CodeGenerators/WrapperGenerator.cpp
View file

@ -573,7 +573,8 @@ static void generate_to_cpp(SourceGenerator& generator, ParameterType& parameter
)~~~");
}
} else if (is_wrappable_type(parameter.type)) {
scoped_generator.append(R"~~~(
if (!parameter.type.nullable) {
scoped_generator.append(R"~~~(
auto @cpp_name@_object = @js_name@@js_suffix@.to_object(global_object);
if (vm.exception())
@return_statement@
@ -585,6 +586,23 @@ static void generate_to_cpp(SourceGenerator& generator, ParameterType& parameter
auto& @cpp_name@ = static_cast<@parameter.type.name@Wrapper*>(@cpp_name@_object)->impl();
)~~~");
} else {
scoped_generator.append(R"~~~(
@parameter.type.name@* @cpp_name@ = nullptr;
if (!@js_name@@js_suffix@.is_null()) {
auto @cpp_name@_object = @js_name@@js_suffix@.to_object(global_object);
if (vm.exception())
@return_statement@
if (!is<@parameter.type.name@Wrapper>(@cpp_name@_object)) {
vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::NotA, "@parameter.type.name@");
@return_statement@
}
@cpp_name@ = &static_cast<@parameter.type.name@Wrapper*>(@cpp_name@_object)->impl();
}
)~~~");
}
} else if (parameter.type.name == "double") {
if (!optional) {
scoped_generator.append(R"~~~(

6
Userland/Libraries/LibWeb/DOM/Document.cpp
View file

@ -215,14 +215,14 @@ HTML::HTMLElement* Document::body()
}
// https://html.spec.whatwg.org/multipage/dom.html#dom-document-body
ExceptionOr<void> Document::set_body(HTML::HTMLElement& new_body)
ExceptionOr<void> Document::set_body(HTML::HTMLElement* new_body)
{
if (!is<HTML::HTMLBodyElement>(new_body) && !is<HTML::HTMLFrameSetElement>(new_body))
return DOM::HierarchyRequestError::create("Invalid document body element, must be 'body' or 'frameset'");
auto* existing_body = body();
if (existing_body) {
auto replace_result = existing_body->parent()->replace_child(new_body, *existing_body);
auto replace_result = existing_body->parent()->replace_child(*new_body, *existing_body);
if (replace_result.is_exception())
return replace_result.exception();
return {};
@ -232,7 +232,7 @@ ExceptionOr<void> Document::set_body(HTML::HTMLElement& new_body)
if (!document_element)
return DOM::HierarchyRequestError::create("Missing document element");
auto append_result = document_element->append_child(new_body);
auto append_result = document_element->append_child(*new_body);
if (append_result.is_exception())
return append_result.exception();
return {};

2
Userland/Libraries/LibWeb/DOM/Document.h
View file

@ -110,7 +110,7 @@ public:
return const_cast<Document*>(this)->body();
}
ExceptionOr<void> set_body(HTML::HTMLElement& new_body);
ExceptionOr<void> set_body(HTML::HTMLElement* new_body);
String title() const;
void set_title(const String&);

25
Userland/Libraries/LibWeb/HTML/HTMLTableElement.cpp
View file

@ -51,13 +51,16 @@ RefPtr<HTMLTableCaptionElement> HTMLTableElement::caption()
return first_child_of_type<HTMLTableCaptionElement>();
}
void HTMLTableElement::set_caption(HTMLTableCaptionElement& caption)
void HTMLTableElement::set_caption(HTMLTableCaptionElement* caption)
{
// FIXME: This is not always the case, but this function is currently written in a way that assumes non-null.
VERIFY(caption);
// FIXME: The spec requires deleting the current caption if caption is null
// Currently the wrapper generator doesn't send us a nullable value
delete_caption();
pre_insert(caption, first_child());
pre_insert(*caption, first_child());
}
NonnullRefPtr<HTMLTableCaptionElement> HTMLTableElement::create_caption()
@ -93,9 +96,12 @@ RefPtr<HTMLTableSectionElement> HTMLTableElement::t_head()
return nullptr;
}
DOM::ExceptionOr<void> HTMLTableElement::set_t_head(HTMLTableSectionElement& thead)
DOM::ExceptionOr<void> HTMLTableElement::set_t_head(HTMLTableSectionElement* thead)
{
if (thead.tag_name() != TagNames::thead)
// FIXME: This is not always the case, but this function is currently written in a way that assumes non-null.
VERIFY(thead);
if (thead->tag_name() != TagNames::thead)
return DOM::HierarchyRequestError::create("Element is not thead");
// FIXME: The spec requires deleting the current thead if thead is null
@ -120,7 +126,7 @@ DOM::ExceptionOr<void> HTMLTableElement::set_t_head(HTMLTableSectionElement& the
break;
}
pre_insert(thead, child_to_append_after);
pre_insert(*thead, child_to_append_after);
return {};
}
@ -177,9 +183,12 @@ RefPtr<HTMLTableSectionElement> HTMLTableElement::t_foot()
return nullptr;
}
DOM::ExceptionOr<void> HTMLTableElement::set_t_foot(HTMLTableSectionElement& tfoot)
DOM::ExceptionOr<void> HTMLTableElement::set_t_foot(HTMLTableSectionElement* tfoot)
{
if (tfoot.tag_name() != TagNames::tfoot)
// FIXME: This is not always the case, but this function is currently written in a way that assumes non-null.
VERIFY(tfoot);
if (tfoot->tag_name() != TagNames::tfoot)
return DOM::HierarchyRequestError::create("Element is not tfoot");
// FIXME: The spec requires deleting the current tfoot if tfoot is null
@ -187,7 +196,7 @@ DOM::ExceptionOr<void> HTMLTableElement::set_t_foot(HTMLTableSectionElement& tfo
delete_t_foot();
// We insert the new tfoot at the end of the table
append_child(tfoot);
append_child(*tfoot);
return {};
}

6
Userland/Libraries/LibWeb/HTML/HTMLTableElement.h
View file

@ -22,17 +22,17 @@ public:
virtual ~HTMLTableElement() override;
RefPtr<HTMLTableCaptionElement> caption();
void set_caption(HTMLTableCaptionElement&);
void set_caption(HTMLTableCaptionElement*);
NonnullRefPtr<HTMLTableCaptionElement> create_caption();
void delete_caption();
RefPtr<HTMLTableSectionElement> t_head();
DOM::ExceptionOr<void> set_t_head(HTMLTableSectionElement& thead);
DOM::ExceptionOr<void> set_t_head(HTMLTableSectionElement* thead);
NonnullRefPtr<HTMLTableSectionElement> create_t_head();
void delete_t_head();
RefPtr<HTMLTableSectionElement> t_foot();
DOM::ExceptionOr<void> set_t_foot(HTMLTableSectionElement& thead);
DOM::ExceptionOr<void> set_t_foot(HTMLTableSectionElement* tfoot);
NonnullRefPtr<HTMLTableSectionElement> create_t_foot();
void delete_t_foot();