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/* -*- 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 */
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