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Side by Side Diff: src/elements-kind.h

Issue 363323003: More OStreamsUse OStreams more often. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Rebased and polished. Created 6 years, 5 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef V8_ELEMENTS_KIND_H_ 5 #ifndef V8_ELEMENTS_KIND_H_
6 #define V8_ELEMENTS_KIND_H_ 6 #define V8_ELEMENTS_KIND_H_
7 7
8 #include "src/checks.h" 8 #include "src/checks.h"
9 #include "src/ostreams.h"
9 10
10 namespace v8 { 11 namespace v8 {
11 namespace internal { 12 namespace internal {
12 13
13 enum ElementsKind { 14 enum ElementsKind {
14 // The "fast" kind for elements that only contain SMI values. Must be first 15 // The "fast" kind for elements that only contain SMI values. Must be first
15 // to make it possible to efficiently check maps for this kind. 16 // to make it possible to efficiently check maps for this kind.
16 FAST_SMI_ELEMENTS, 17 FAST_SMI_ELEMENTS,
17 FAST_HOLEY_SMI_ELEMENTS, 18 FAST_HOLEY_SMI_ELEMENTS,
18 19
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67 const int kFastElementsKindCount = LAST_FAST_ELEMENTS_KIND - 68 const int kFastElementsKindCount = LAST_FAST_ELEMENTS_KIND -
68 FIRST_FAST_ELEMENTS_KIND + 1; 69 FIRST_FAST_ELEMENTS_KIND + 1;
69 70
70 // The number to add to a packed elements kind to reach a holey elements kind 71 // The number to add to a packed elements kind to reach a holey elements kind
71 const int kFastElementsKindPackedToHoley = 72 const int kFastElementsKindPackedToHoley =
72 FAST_HOLEY_SMI_ELEMENTS - FAST_SMI_ELEMENTS; 73 FAST_HOLEY_SMI_ELEMENTS - FAST_SMI_ELEMENTS;
73 74
74 int ElementsKindToShiftSize(ElementsKind elements_kind); 75 int ElementsKindToShiftSize(ElementsKind elements_kind);
75 int GetDefaultHeaderSizeForElementsKind(ElementsKind elements_kind); 76 int GetDefaultHeaderSizeForElementsKind(ElementsKind elements_kind);
76 const char* ElementsKindToString(ElementsKind kind); 77 const char* ElementsKindToString(ElementsKind kind);
77 void PrintElementsKind(FILE* out, ElementsKind kind);
78 78
79 ElementsKind GetInitialFastElementsKind(); 79 ElementsKind GetInitialFastElementsKind();
80 80
81 ElementsKind GetFastElementsKindFromSequenceIndex(int sequence_number); 81 ElementsKind GetFastElementsKindFromSequenceIndex(int sequence_number);
82 int GetSequenceIndexFromFastElementsKind(ElementsKind elements_kind); 82 int GetSequenceIndexFromFastElementsKind(ElementsKind elements_kind);
83 83
84 ElementsKind GetNextTransitionElementsKind(ElementsKind elements_kind); 84 ElementsKind GetNextTransitionElementsKind(ElementsKind elements_kind);
85 85
86 inline bool IsDictionaryElementsKind(ElementsKind kind) { 86 inline bool IsDictionaryElementsKind(ElementsKind kind) {
87 return kind == DICTIONARY_ELEMENTS; 87 return kind == DICTIONARY_ELEMENTS;
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244 bool allow_only_packed) { 244 bool allow_only_packed) {
245 return IsFastElementsKind(elements_kind) && 245 return IsFastElementsKind(elements_kind) &&
246 (elements_kind != TERMINAL_FAST_ELEMENTS_KIND && 246 (elements_kind != TERMINAL_FAST_ELEMENTS_KIND &&
247 (!allow_only_packed || elements_kind != FAST_ELEMENTS)); 247 (!allow_only_packed || elements_kind != FAST_ELEMENTS));
248 } 248 }
249 249
250 250
251 } } // namespace v8::internal 251 } } // namespace v8::internal
252 252
253 #endif // V8_ELEMENTS_KIND_H_ 253 #endif // V8_ELEMENTS_KIND_H_
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