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// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "objects-visiting.h"
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static inline bool IsShortcutCandidate(int type) {
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return ((type & kShortcutTypeMask) == kShortcutTypeTag);
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StaticVisitorBase::VisitorId StaticVisitorBase::GetVisitorId(
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if (instance_type < FIRST_NONSTRING_TYPE) {
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switch (instance_type & kStringRepresentationMask) {
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if ((instance_type & kStringEncodingMask) == kAsciiStringTag) {
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return kVisitSeqAsciiString;
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return kVisitSeqTwoByteString;
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if (IsShortcutCandidate(instance_type)) {
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return kVisitShortcutCandidate;
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return kVisitConsString;
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case kSlicedStringTag:
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return kVisitSlicedString;
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case kExternalStringTag:
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return GetVisitorIdForSize(kVisitDataObject,
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kVisitDataObjectGeneric,
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switch (instance_type) {
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return kVisitByteArray;
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return kVisitFreeSpace;
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case FIXED_ARRAY_TYPE:
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return kVisitFixedArray;
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case FIXED_DOUBLE_ARRAY_TYPE:
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return kVisitFixedDoubleArray;
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case JS_GLOBAL_PROPERTY_CELL_TYPE:
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return kVisitPropertyCell;
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return GetVisitorIdForSize(kVisitStruct,
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return GetVisitorIdForSize(kVisitStruct,
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case JS_WEAK_MAP_TYPE:
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return kVisitJSWeakMap;
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return kVisitJSRegExp;
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case SHARED_FUNCTION_INFO_TYPE:
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return kVisitSharedFunctionInfo;
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return GetVisitorIdForSize(kVisitStruct,
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case JS_FUNCTION_PROXY_TYPE:
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return GetVisitorIdForSize(kVisitStruct,
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JSFunctionProxy::kSize);
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return GetVisitorIdForSize(kVisitDataObject,
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kVisitDataObjectGeneric,
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return kVisitDataObjectGeneric;
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case JS_CONTEXT_EXTENSION_OBJECT_TYPE:
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case JS_GLOBAL_PROXY_TYPE:
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case JS_GLOBAL_OBJECT_TYPE:
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case JS_BUILTINS_OBJECT_TYPE:
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case JS_MESSAGE_OBJECT_TYPE:
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return GetVisitorIdForSize(kVisitJSObject,
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kVisitJSObjectGeneric,
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case JS_FUNCTION_TYPE:
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return kVisitJSFunction;
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case HEAP_NUMBER_TYPE:
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case EXTERNAL_PIXEL_ARRAY_TYPE:
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case EXTERNAL_BYTE_ARRAY_TYPE:
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case EXTERNAL_UNSIGNED_BYTE_ARRAY_TYPE:
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case EXTERNAL_SHORT_ARRAY_TYPE:
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case EXTERNAL_UNSIGNED_SHORT_ARRAY_TYPE:
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case EXTERNAL_INT_ARRAY_TYPE:
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case EXTERNAL_UNSIGNED_INT_ARRAY_TYPE:
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case EXTERNAL_FLOAT_ARRAY_TYPE:
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case EXTERNAL_DOUBLE_ARRAY_TYPE:
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return GetVisitorIdForSize(kVisitDataObject,
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kVisitDataObjectGeneric,
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#define MAKE_STRUCT_CASE(NAME, Name, name) \
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STRUCT_LIST(MAKE_STRUCT_CASE)
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#undef MAKE_STRUCT_CASE
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return GetVisitorIdForSize(kVisitStruct,
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return kVisitorIdCount;
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} } // namespace v8::internal