| /* -*- 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/ScopeObject.h" |
| |
| #include "jsscriptinlines.h" |
| |
| #include "vm/ScopeObject-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.aliasedVarFromArguments(v); |
| } |
| return v; |
| } |
| |
| inline void |
| ArgumentsObject::setElement(JSContext* cx, uint32_t i, const Value& v) |
| { |
| MOZ_ASSERT(!isElementDeleted(i)); |
| HeapValue& 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.setAliasedVarFromArguments(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 */ |