Add m-esr52 at 52.6.0

1 files changed, 67 insertions, 0 deletions

diff --git a/js/src/vm/ArgumentsObject-inl.h b/js/src/vm/ArgumentsObject-inl.h
new file mode 100644
index 000000000..fdd3d3e13
--- /dev/null
+++ b/js/src/vm/ArgumentsObject-inl.h
@@ -0,0 +1,67 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef vm_ArgumentsObject_inl_h
+#define vm_ArgumentsObject_inl_h
+
+#include "vm/ArgumentsObject.h"
+
+#include "vm/EnvironmentObject.h"
+
+#include "jsscriptinlines.h"
+
+#include "vm/EnvironmentObject-inl.h"
+
+namespace js {
+
+inline const Value&
+ArgumentsObject::element(uint32_t i) const
+{
+    MOZ_ASSERT(!isElementDeleted(i));
+    const Value& v = data()->args[i];
+    if (IsMagicScopeSlotValue(v)) {
+        CallObject& callobj = getFixedSlot(MAYBE_CALL_SLOT).toObject().as<CallObject>();
+        return callobj.aliasedFormalFromArguments(v);
+    }
+    return v;
+}
+
+inline void
+ArgumentsObject::setElement(JSContext* cx, uint32_t i, const Value& v)
+{
+    MOZ_ASSERT(!isElementDeleted(i));
+    GCPtrValue& lhs = data()->args[i];
+    if (IsMagicScopeSlotValue(lhs)) {
+        uint32_t slot = SlotFromMagicScopeSlotValue(lhs);
+        CallObject& callobj = getFixedSlot(MAYBE_CALL_SLOT).toObject().as<CallObject>();
+        for (Shape::Range<NoGC> r(callobj.lastProperty()); !r.empty(); r.popFront()) {
+            if (r.front().slot() == slot) {
+                callobj.setAliasedFormalFromArguments(cx, lhs, r.front().propid(), v);
+                return;
+            }
+        }
+        MOZ_CRASH("Bad Arguments::setElement");
+    }
+    lhs = v;
+}
+
+inline bool
+ArgumentsObject::maybeGetElements(uint32_t start, uint32_t count, Value* vp)
+{
+    MOZ_ASSERT(start + count >= start);
+
+    uint32_t length = initialLength();
+    if (start > length || start + count > length || isAnyElementDeleted())
+        return false;
+
+    for (uint32_t i = start, end = start + count; i < end; ++i, ++vp)
+        *vp = element(i);
+    return true;
+}
+
+} /* namespace js */
+
+#endif /* vm_ArgumentsObject_inl_h */