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48 lines
1.2 KiB
C++
48 lines
1.2 KiB
C++
// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_VM_UNIBROW_INL_H_
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#define RUNTIME_VM_UNIBROW_INL_H_
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#include "vm/unibrow.h"
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#include "platform/assert.h"
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namespace unibrow {
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template <class T, intptr_t s>
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intptr_t Mapping<T, s>::get(int32_t c, int32_t n, int32_t* result) {
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CacheEntry entry = entries_[c & kMask];
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if (entry.code_point_ == c) {
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if (entry.offset_ == 0) {
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return 0;
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} else {
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result[0] = c + entry.offset_;
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return 1;
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}
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} else {
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return CalculateValue(c, n, result);
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}
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}
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template <class T, intptr_t s>
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intptr_t Mapping<T, s>::CalculateValue(int32_t c, int32_t n, int32_t* result) {
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bool allow_caching = true;
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intptr_t length = T::Convert(c, n, result, &allow_caching);
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if (allow_caching) {
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if (length == 1) {
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entries_[c & kMask] = CacheEntry(c, result[0] - c);
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return 1;
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} else {
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entries_[c & kMask] = CacheEntry(c, 0);
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return 0;
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}
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} else {
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return length;
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}
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}
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} // namespace unibrow
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#endif // RUNTIME_VM_UNIBROW_INL_H_
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