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Implement WebIDL sequence return value using JS_NewArrayObject1
This commits changes the creation of the array to use the length, and
sets the elements later.
Reference implementation:
07ed19e582/js/xpconnect/public/nsTArrayHelpers.h (L16)
This commit is contained in:
parent
75ecb67e62
commit
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1 changed files with 13 additions and 22 deletions
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@ -38,16 +38,15 @@ use dom::bindings::js::Root;
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use dom::bindings::num::Finite;
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use dom::bindings::reflector::{Reflectable, Reflector};
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use dom::bindings::str::{ByteString, USVString};
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use dom::bindings::trace::RootedVec;
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use dom::bindings::utils::DOMClass;
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use js;
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use js::glue::{GetProxyPrivate, IsWrapper, RUST_JS_NumberValue};
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use js::glue::{RUST_JSID_IS_STRING, RUST_JSID_TO_STRING, UnwrapObject};
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use js::jsapi::{HandleId, HandleObject, HandleValue, Heap, JS_GetClass};
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use js::jsapi::{HandleId, HandleObject, HandleValue, JS_GetClass};
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use js::jsapi::{JSClass, JSContext, JSObject, JSString, MutableHandleValue};
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use js::jsapi::{JS_GetLatin1StringCharsAndLength, JS_GetReservedSlot};
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use js::jsapi::{JS_GetTwoByteStringCharsAndLength, JS_NewStringCopyN};
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use js::jsapi::{JS_NewArrayObject, HandleValueArray, RootedValue};
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use js::jsapi::{JS_NewArrayObject1, JS_DefineElement, RootedValue, RootedObject};
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use js::jsapi::{JS_NewUCStringCopyN, JS_StringHasLatin1Chars, JS_WrapValue};
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use js::jsval::{BooleanValue, Int32Value, NullValue, UInt32Value, UndefinedValue};
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use js::jsval::{JSVal, ObjectOrNullValue, ObjectValue, StringValue};
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@ -58,7 +57,7 @@ use libc;
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use num::Float;
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use num::traits::{Bounded, Zero};
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use std::rc::Rc;
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use std::{char, mem, ptr, slice};
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use std::{char, ptr, slice};
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use util::str::DOMString;
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trait As<O>: Copy {
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@ -815,30 +814,22 @@ impl<T: FromJSValConvertible> FromJSValConvertible for Option<T> {
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impl<T: ToJSValConvertible> ToJSValConvertible for Vec<T> {
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fn to_jsval(&self, cx: *mut JSContext, rval: MutableHandleValue) {
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let mut js_objects = RootedVec::new();
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let js_array = RootedObject::new(cx,
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unsafe { JS_NewArrayObject1(cx, self.len() as libc::size_t) });
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assert!(!js_array.handle().is_null());
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for obj in self.iter() {
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let mut heap = Heap::default();
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for (index, obj) in self.iter().enumerate() {
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let mut val = RootedValue::new(cx, UndefinedValue());
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obj.to_jsval(cx, val.handle_mut());
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heap.set(val.handle().get());
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js_objects.push(heap);
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unsafe {
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assert!(JS_DefineElement(cx, js_array.handle(),
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index as u32, val.handle(), js::JSPROP_ENUMERATE, None, None));
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}
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}
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let values: Vec<JSVal> = js_objects.iter()
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.map(|heap| heap.handle().get())
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.collect();
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let handle = HandleValueArray {
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length_: values.len() as u64,
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elements_: values.as_ptr(),
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};
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unsafe {
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let js_array = JS_NewArrayObject(cx, &handle);
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assert!(!js_array.is_null());
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rval.set(ObjectValue(mem::transmute(js_array)));
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rval.set(ObjectValue(&*js_array.handle().get()));
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}
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}
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}
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