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