michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * vim: set ts=8 sts=4 et sw=4 tw=99:
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef vm_ArgumentsObject_inl_h
michael@0: #define vm_ArgumentsObject_inl_h
michael@0: 
michael@0: #include "vm/ArgumentsObject.h"
michael@0: 
michael@0: #include "vm/ScopeObject.h"
michael@0: 
michael@0: #include "jsscriptinlines.h"
michael@0: 
michael@0: #include "vm/ScopeObject-inl.h"
michael@0: 
michael@0: namespace js {
michael@0: 
michael@0: inline const Value &
michael@0: ArgumentsObject::element(uint32_t i) const
michael@0: {
michael@0:     JS_ASSERT(!isElementDeleted(i));
michael@0:     const Value &v = data()->args[i];
michael@0:     if (v.isMagic()) {
michael@0:         CallObject &callobj = getFixedSlot(MAYBE_CALL_SLOT).toObject().as<CallObject>();
michael@0:         return callobj.aliasedVarFromArguments(v);
michael@0:     }
michael@0:     return v;
michael@0: }
michael@0: 
michael@0: inline void
michael@0: ArgumentsObject::setElement(JSContext *cx, uint32_t i, const Value &v)
michael@0: {
michael@0:     JS_ASSERT(!isElementDeleted(i));
michael@0:     HeapValue &lhs = data()->args[i];
michael@0:     if (lhs.isMagic()) {
michael@0:         uint32_t slot = lhs.magicUint32();
michael@0:         CallObject &callobj = getFixedSlot(MAYBE_CALL_SLOT).toObject().as<CallObject>();
michael@0:         for (Shape::Range<NoGC> r(callobj.lastProperty()); !r.empty(); r.popFront()) {
michael@0:             if (r.front().slot() == slot) {
michael@0:                 callobj.setAliasedVarFromArguments(cx, lhs, r.front().propid(), v);
michael@0:                 return;
michael@0:             }
michael@0:         }
michael@0:         MOZ_ASSUME_UNREACHABLE("Bad Arguments::setElement");
michael@0:     }
michael@0:     lhs = v;
michael@0: }
michael@0: 
michael@0: inline bool
michael@0: ArgumentsObject::maybeGetElements(uint32_t start, uint32_t count, Value *vp)
michael@0: {
michael@0:     JS_ASSERT(start + count >= start);
michael@0: 
michael@0:     uint32_t length = initialLength();
michael@0:     if (start > length || start + count > length || isAnyElementDeleted())
michael@0:         return false;
michael@0: 
michael@0:     for (uint32_t i = start, end = start + count; i < end; ++i, ++vp)
michael@0:         *vp = element(i);
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: } /* namespace js */
michael@0: 
michael@0: #endif /* vm_ArgumentsObject_inl_h */