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#include <new>
#include "keyset.h"
namespace marisa {
Keyset::Keyset()
: base_blocks_(), base_blocks_size_(0), base_blocks_capacity_(0),
extra_blocks_(), extra_blocks_size_(0), extra_blocks_capacity_(0),
key_blocks_(), key_blocks_size_(0), key_blocks_capacity_(0),
ptr_(NULL), avail_(0), size_(0), total_length_(0) {}
void Keyset::push_back(const Key &key) {
MARISA_DEBUG_IF(size_ == MARISA_SIZE_MAX, MARISA_SIZE_ERROR);
char * const key_ptr = reserve(key.length());
for (std::size_t i = 0; i < key.length(); ++i) {
key_ptr[i] = key[i];
}
Key &new_key = key_blocks_[size_ / KEY_BLOCK_SIZE][size_ % KEY_BLOCK_SIZE];
new_key.set_str(key_ptr, key.length());
new_key.set_id(key.id());
++size_;
total_length_ += new_key.length();
}
void Keyset::push_back(const Key &key, char end_marker) {
MARISA_DEBUG_IF(size_ == MARISA_SIZE_MAX, MARISA_SIZE_ERROR);
if ((size_ / KEY_BLOCK_SIZE) == key_blocks_size_) {
append_key_block();
}
char * const key_ptr = reserve(key.length() + 1);
for (std::size_t i = 0; i < key.length(); ++i) {
key_ptr[i] = key[i];
}
key_ptr[key.length()] = end_marker;
Key &new_key = key_blocks_[size_ / KEY_BLOCK_SIZE][size_ % KEY_BLOCK_SIZE];
new_key.set_str(key_ptr, key.length());
new_key.set_id(key.id());
++size_;
total_length_ += new_key.length();
}
void Keyset::push_back(const char *str) {
MARISA_DEBUG_IF(size_ == MARISA_SIZE_MAX, MARISA_SIZE_ERROR);
MARISA_THROW_IF(str == NULL, MARISA_NULL_ERROR);
std::size_t length = 0;
while (str[length] != '\0') {
++length;
}
push_back(str, length);
}
void Keyset::push_back(const char *ptr, std::size_t length, float weight) {
MARISA_DEBUG_IF(size_ == MARISA_SIZE_MAX, MARISA_SIZE_ERROR);
MARISA_THROW_IF((ptr == NULL) && (length != 0), MARISA_NULL_ERROR);
MARISA_THROW_IF(length > MARISA_UINT32_MAX, MARISA_SIZE_ERROR);
char * const key_ptr = reserve(length);
for (std::size_t i = 0; i < length; ++i) {
key_ptr[i] = ptr[i];
}
Key &key = key_blocks_[size_ / KEY_BLOCK_SIZE][size_ % KEY_BLOCK_SIZE];
key.set_str(key_ptr, length);
key.set_weight(weight);
++size_;
total_length_ += length;
}
void Keyset::reset() {
base_blocks_size_ = 0;
extra_blocks_size_ = 0;
ptr_ = NULL;
avail_ = 0;
size_ = 0;
total_length_ = 0;
}
void Keyset::clear() {
Keyset().swap(*this);
}
void Keyset::swap(Keyset &rhs) {
base_blocks_.swap(rhs.base_blocks_);
marisa::swap(base_blocks_size_, rhs.base_blocks_size_);
marisa::swap(base_blocks_capacity_, rhs.base_blocks_capacity_);
extra_blocks_.swap(rhs.extra_blocks_);
marisa::swap(extra_blocks_size_, rhs.extra_blocks_size_);
marisa::swap(extra_blocks_capacity_, rhs.extra_blocks_capacity_);
key_blocks_.swap(rhs.key_blocks_);
marisa::swap(key_blocks_size_, rhs.key_blocks_size_);
marisa::swap(key_blocks_capacity_, rhs.key_blocks_capacity_);
marisa::swap(ptr_, rhs.ptr_);
marisa::swap(avail_, rhs.avail_);
marisa::swap(size_, rhs.size_);
marisa::swap(total_length_, rhs.total_length_);
}
char *Keyset::reserve(std::size_t size) {
if ((size_ / KEY_BLOCK_SIZE) == key_blocks_size_) {
append_key_block();
}
if (size > EXTRA_BLOCK_SIZE) {
append_extra_block(size);
return extra_blocks_[extra_blocks_size_ - 1].get();
} else {
if (size > avail_) {
append_base_block();
}
ptr_ += size;
avail_ -= size;
return ptr_ - size;
}
}
void Keyset::append_base_block() {
if (base_blocks_size_ == base_blocks_capacity_) {
const std::size_t new_capacity =
(base_blocks_size_ != 0) ? (base_blocks_size_ * 2) : 1;
scoped_array<scoped_array<char> > new_blocks(
new (std::nothrow) scoped_array<char>[new_capacity]);
MARISA_THROW_IF(new_blocks.get() == NULL, MARISA_MEMORY_ERROR);
for (std::size_t i = 0; i < base_blocks_size_; ++i) {
base_blocks_[i].swap(new_blocks[i]);
}
base_blocks_.swap(new_blocks);
base_blocks_capacity_ = new_capacity;
}
if (base_blocks_[base_blocks_size_].get() == NULL) {
scoped_array<char> new_block(new (std::nothrow) char[BASE_BLOCK_SIZE]);
MARISA_THROW_IF(new_block.get() == NULL, MARISA_MEMORY_ERROR);
base_blocks_[base_blocks_size_].swap(new_block);
}
ptr_ = base_blocks_[base_blocks_size_++].get();
avail_ = BASE_BLOCK_SIZE;
}
void Keyset::append_extra_block(std::size_t size) {
if (extra_blocks_size_ == extra_blocks_capacity_) {
const std::size_t new_capacity =
(extra_blocks_size_ != 0) ? (extra_blocks_size_ * 2) : 1;
scoped_array<scoped_array<char> > new_blocks(
new (std::nothrow) scoped_array<char>[new_capacity]);
MARISA_THROW_IF(new_blocks.get() == NULL, MARISA_MEMORY_ERROR);
for (std::size_t i = 0; i < extra_blocks_size_; ++i) {
extra_blocks_[i].swap(new_blocks[i]);
}
extra_blocks_.swap(new_blocks);
extra_blocks_capacity_ = new_capacity;
}
scoped_array<char> new_block(new (std::nothrow) char[size]);
MARISA_THROW_IF(new_block.get() == NULL, MARISA_MEMORY_ERROR);
extra_blocks_[extra_blocks_size_++].swap(new_block);
}
void Keyset::append_key_block() {
if (key_blocks_size_ == key_blocks_capacity_) {
const std::size_t new_capacity =
(key_blocks_size_ != 0) ? (key_blocks_size_ * 2) : 1;
scoped_array<scoped_array<Key> > new_blocks(
new (std::nothrow) scoped_array<Key>[new_capacity]);
MARISA_THROW_IF(new_blocks.get() == NULL, MARISA_MEMORY_ERROR);
for (std::size_t i = 0; i < key_blocks_size_; ++i) {
key_blocks_[i].swap(new_blocks[i]);
}
key_blocks_.swap(new_blocks);
key_blocks_capacity_ = new_capacity;
}
scoped_array<Key> new_block(new (std::nothrow) Key[KEY_BLOCK_SIZE]);
MARISA_THROW_IF(new_block.get() == NULL, MARISA_MEMORY_ERROR);
key_blocks_[key_blocks_size_++].swap(new_block);
}
} // namespace marisa
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