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// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#include "vm/zone_text_buffer.h"
#include "platform/assert.h"
#include "platform/globals.h"
#include "platform/utils.h"
#include "vm/object.h"
#include "vm/os.h"
#include "vm/zone.h"
namespace dart {
ZoneTextBuffer::ZoneTextBuffer(Zone* zone, intptr_t initial_capacity)
: zone_(zone) {
ASSERT(initial_capacity > 0);
buffer_ = reinterpret_cast<char*>(zone->Alloc<char>(initial_capacity));
capacity_ = initial_capacity;
buffer_[length_] = '\0';
}
void ZoneTextBuffer::Clear() {
const intptr_t initial_capacity = 64;
buffer_ = reinterpret_cast<char*>(zone_->Alloc<char>(initial_capacity));
capacity_ = initial_capacity;
length_ = 0;
buffer_[length_] = '\0';
}
bool ZoneTextBuffer::EnsureCapacity(intptr_t len) {
intptr_t remaining = capacity_ - length_;
if (remaining <= len) {
intptr_t new_capacity = capacity_ + Utils::Maximum(capacity_, len);
buffer_ = zone_->Realloc<char>(buffer_, capacity_, new_capacity);
capacity_ = new_capacity;
}
return true;
}
} // namespace dart