Auto merge of #23745 - georgeroman:implement_get_element_property_wd_command, r=jdm

Implement GetElementProperty wd command

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This commit is contained in:
bors-servo 2019-07-23 21:24:57 -04:00 committed by GitHub
commit 7ffe65e672
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8 changed files with 119 additions and 23 deletions

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@ -60,7 +60,7 @@ use js::jsapi::{
};
use js::jsapi::{JS_NewStringCopyN, JS_StringHasLatin1Chars};
use js::jsval::{ObjectValue, StringValue, UndefinedValue};
use js::rust::wrappers::{JS_GetProperty, JS_IsArrayObject};
use js::rust::wrappers::{JS_GetProperty, JS_HasProperty, JS_IsArrayObject};
use js::rust::{get_object_class, is_dom_class, is_dom_object, maybe_wrap_value, ToString};
use js::rust::{HandleId, HandleObject, HandleValue, MutableHandleValue};
use num_traits::Float;
@ -596,11 +596,18 @@ pub unsafe fn get_property_jsval(
Ok(cname) => cname,
Err(_) => return Ok(()),
};
JS_GetProperty(cx, object, cname.as_ptr(), rval);
if JS_IsExceptionPending(cx) {
return Err(Error::JSFailed);
let mut found = false;
if JS_HasProperty(cx, object, cname.as_ptr(), &mut found) && found {
JS_GetProperty(cx, object, cname.as_ptr(), rval);
if JS_IsExceptionPending(cx) {
return Err(Error::JSFailed);
}
Ok(())
} else if JS_IsExceptionPending(cx) {
Err(Error::JSFailed)
} else {
Ok(())
}
Ok(())
}
/// Get a property from a JS object, and convert it to a Rust value.