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LibWeb: Generate property_initial_value() function from Properties.json

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Since we have initial-value data in Properties.json already, it makes
sense to use that instead of needing to duplicate the same information
in ComputedValues.h

However, converting a StyleValue to the kind of types used in
InitialValues is non-trivial. So this may or may not actually be useful.
This commit is contained in:
Sam Atkins 2021-08-16 17:42:09 +01:00 • committed by Andreas Kling
parent 38ee69adfa
commit 8995839e3f
2 changed files with 34 additions and 0 deletions
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32
Userland/Libraries/LibWeb/CodeGenerators/Generate_CSS_PropertyID_cpp.cpp
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@ -45,7 +45,9 @@ int main(int argc, char** argv)
generator.append(R"~~~(
#include <AK/Assertions.h>
#include <LibWeb/CSS/Parser/Parser.h>
#include <LibWeb/CSS/PropertyID.h>
#include <LibWeb/CSS/StyleValue.h>
namespace Web::CSS {
@ -153,6 +155,36 @@ bool is_pseudo_property(PropertyID property_id)
}
}
RefPtr<StyleValue> property_initial_value(PropertyID property_id)
{
static HashMap<PropertyID, NonnullRefPtr<StyleValue>> initial_values;
if (initial_values.is_empty()) {
ParsingContext parsing_context;
)~~~");
json.value().as_object().for_each_member([&](auto& name, auto& value) {
VERIFY(value.is_object());
if (value.as_object().has("initial")) {
auto& initial_value = value.as_object().get("initial");
VERIFY(initial_value.is_string());
auto initial_value_string = initial_value.as_string();
auto member_generator = generator.fork();
member_generator.set("name:titlecase", title_casify(name));
member_generator.set("initial_value_string", initial_value_string);
member_generator.append(R"~~~(
if (auto parsed_value = Parser(parsing_context, "@initial_value_string@").parse_as_css_value(PropertyID::@name:titlecase@))
initial_values.set(PropertyID::@name:titlecase@, parsed_value.release_nonnull());
)~~~");
}
});
generator.append(R"~~~(
}
return initial_values.get(property_id).value_or(nullptr);
}
} // namespace Web::CSS
)~~~");