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09ddcece30
Change-Id: I4d2759ffa80c0106838ad0ddbc6dd086fddda1dd Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/157742 Commit-Queue: Tess Strickland <sstrickl@google.com> Reviewed-by: Ryan Macnak <rmacnak@google.com>
43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
// Copyright (c) 2017, 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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#include "vm/zone_text_buffer.h"
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#include "platform/assert.h"
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#include "platform/globals.h"
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#include "platform/utils.h"
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#include "vm/object.h"
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#include "vm/os.h"
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#include "vm/zone.h"
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namespace dart {
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ZoneTextBuffer::ZoneTextBuffer(Zone* zone, intptr_t initial_capacity)
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: zone_(zone) {
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ASSERT(initial_capacity > 0);
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buffer_ = reinterpret_cast<char*>(zone->Alloc<char>(initial_capacity));
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capacity_ = initial_capacity;
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buffer_[length_] = '\0';
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}
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void ZoneTextBuffer::Clear() {
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const intptr_t initial_capacity = 64;
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buffer_ = reinterpret_cast<char*>(zone_->Alloc<char>(initial_capacity));
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capacity_ = initial_capacity;
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length_ = 0;
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buffer_[length_] = '\0';
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}
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bool ZoneTextBuffer::EnsureCapacity(intptr_t len) {
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intptr_t remaining = capacity_ - length_;
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if (remaining <= len) {
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intptr_t new_capacity = capacity_ + Utils::Maximum(capacity_, len);
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buffer_ = zone_->Realloc<char>(buffer_, capacity_, new_capacity);
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capacity_ = new_capacity;
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}
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return true;
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}
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} // namespace dart
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