Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 66 insertions, 0 deletions

diff --git a/js/src/vm/ArgumentsObject-inl.h b/js/src/vm/ArgumentsObject-inl.h
new file mode 100644
index 0000000000..e8ac311b2e
--- /dev/null
+++ b/js/src/vm/ArgumentsObject-inl.h
@@ -0,0 +1,66 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * 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 "vm/EnvironmentObject-inl.h"
+#include "vm/JSScript-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(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(lhs, 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 */