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Implement FromJSValConvertible on enums

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This commit is contained in:
Manish Goregaokar 2020-04-10 15:46:28 -07:00
parent 37023b24f2
commit 10a13ffa20
1 changed files with 20 additions and 0 deletions
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20
components/script/dom/bindings/codegen/CodegenRust.py
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@ -4347,8 +4347,12 @@ pub enum %s {
pairs = ",\n ".join(['("%s", super::%s::%s)' % (val, ident, getEnumValueName(val)) for val in enum.values()])
inner = string.Template("""\
use crate::dom::bindings::conversions::ConversionResult;
use crate::dom::bindings::conversions::FromJSValConvertible;
use crate::dom::bindings::conversions::ToJSValConvertible;
use crate::dom::bindings::utils::find_enum_value;
use js::jsapi::JSContext;
use js::rust::HandleValue;
use js::rust::MutableHandleValue;
use js::jsval::JSVal;
@ -4373,6 +4377,22 @@ impl ToJSValConvertible for super::${ident} {
pairs[*self as usize].0.to_jsval(cx, rval);
}
}
impl FromJSValConvertible for super::${ident} {
type Config = ();
unsafe fn from_jsval(cx: *mut JSContext, value: HandleValue, _option: ())
-> Result<ConversionResult<super::${ident}>, ()> {
match find_enum_value(cx, value, pairs) {
Err(_) => Err(()),
Ok((None, search)) => {
Ok(ConversionResult::Failure(
format!("'{}' is not a valid enum value for enumeration '${ident}'.", search).into()
))
}
Ok((Some(&value), _)) => Ok(ConversionResult::Success(value)),
}
}
}
""").substitute({
'ident': ident,
'pairs': pairs