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Lazily define interface objects on globals (fixes #6419)

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This commit is contained in:
Anthony Ramine 2016-01-29 01:10:26 +01:00
parent ca979e115b
commit 1559f5a39f
11 changed files with 178 additions and 18 deletions
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68
components/script/dom/bindings/utils.rs
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@ -4,6 +4,7 @@
//! Various utilities to glue JavaScript and the DOM implementation together.
use dom::bindings::codegen::InterfaceObjectMap;
use dom::bindings::codegen::PrototypeList;
use dom::bindings::codegen::PrototypeList::{MAX_PROTO_CHAIN_LENGTH, PROTO_OR_IFACE_LENGTH};
use dom::bindings::conversions::{DOM_OBJECT_SLOT, is_dom_class};
@ -18,16 +19,18 @@ use js;
use js::error::throw_type_error;
use js::glue::{CallJitGetterOp, CallJitMethodOp, CallJitSetterOp, IsWrapper};
use js::glue::{GetCrossCompartmentWrapper, WrapperNew};
use js::glue::{RUST_FUNCTION_VALUE_TO_JITINFO, RUST_JSID_IS_INT};
use js::glue::{RUST_JSID_TO_INT, UnwrapObject};
use js::glue::{RUST_FUNCTION_VALUE_TO_JITINFO, RUST_JSID_IS_INT, RUST_JSID_IS_STRING};
use js::glue::{RUST_JSID_TO_INT, RUST_JSID_TO_STRING, UnwrapObject};
use js::jsapi::{CallArgs, CompartmentOptions, DOMCallbacks, GetGlobalForObjectCrossCompartment};
use js::jsapi::{HandleId, HandleObject, HandleValue, Heap, JSAutoCompartment, JSClass, JSContext};
use js::jsapi::{JSJitInfo, JSObject, JSTraceOp, JSTracer, JSVersion, JSWrapObjectCallbacks};
use js::jsapi::{JS_DeletePropertyById1, JS_FireOnNewGlobalObject, JS_ForwardGetPropertyTo};
use js::jsapi::{JS_GetClass, JS_GetProperty, JS_GetPrototype, JS_GetReservedSlot, JS_HasProperty};
use js::jsapi::{JS_HasPropertyById, JS_IsExceptionPending, JS_NewGlobalObject};
use js::jsapi::{JS_ObjectToOuterObject, JS_SetProperty, JS_SetReservedSlot};
use js::jsapi::{MutableHandleValue, ObjectOpResult, OnNewGlobalHookOption, RootedObject};
use js::jsapi::{JS_DeletePropertyById1, JS_EnumerateStandardClasses, JS_FireOnNewGlobalObject};
use js::jsapi::{JS_ForwardGetPropertyTo, JS_GetClass, JS_GetLatin1StringCharsAndLength};
use js::jsapi::{JS_GetProperty, JS_GetPrototype, JS_GetReservedSlot, JS_HasProperty};
use js::jsapi::{JS_HasPropertyById, JS_IsExceptionPending, JS_IsGlobalObject, JS_NewGlobalObject};
use js::jsapi::{JS_ObjectToOuterObject, JS_ResolveStandardClass, JS_SetProperty};
use js::jsapi::{JS_SetReservedSlot, JS_StringHasLatin1Chars, MutableHandleValue, ObjectOpResult};
use js::jsapi::{OnNewGlobalHookOption, RootedObject};
use js::jsval::{JSVal};
use js::jsval::{PrivateValue, UndefinedValue};
use js::rust::{GCMethods, ToString};
@ -37,6 +40,7 @@ use std::default::Default;
use std::ffi::CString;
use std::os::raw::c_void;
use std::ptr;
use std::slice;
use util::non_geckolib::jsstring_to_str;
/// Proxy handler for a WindowProxy.
@ -364,6 +368,56 @@ pub unsafe fn trace_global(tracer: *mut JSTracer, obj: *mut JSObject) {
}
}
/// Enumerate lazy properties of a global object.
pub unsafe extern "C" fn enumerate_global(cx: *mut JSContext, obj: HandleObject) -> bool {
assert!(JS_IsGlobalObject(obj.get()));
if !JS_EnumerateStandardClasses(cx, obj) {
return false;
}
for init_fun in InterfaceObjectMap::MAP.values() {
init_fun(cx, obj);
}
true
}
/// Resolve a lazy global property, for interface objects and named constructors.
pub unsafe extern "C" fn resolve_global(
cx: *mut JSContext,
obj: HandleObject,
id: HandleId,
rval: *mut bool)
-> bool {
assert!(JS_IsGlobalObject(obj.get()));
if !JS_ResolveStandardClass(cx, obj, id, rval) {
return false;
}
if *rval {
return true;
}
if !RUST_JSID_IS_STRING(id) {
*rval = false;
return true;
}
let string = RUST_JSID_TO_STRING(id);
if !JS_StringHasLatin1Chars(string) {
*rval = false;
return true;
}
let mut length = 0;
let ptr = JS_GetLatin1StringCharsAndLength(cx, ptr::null(), string, &mut length);
assert!(!ptr.is_null());
let bytes = slice::from_raw_parts(ptr, length as usize);
if let Some(init_fun) = InterfaceObjectMap::MAP.get(bytes) {
init_fun(cx, obj);
*rval = true;
} else {
*rval = false;
}
true
}
unsafe extern "C" fn wrap(cx: *mut JSContext,
_existing: HandleObject,
obj: HandleObject)