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StringStore refactoring (#11344)

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* `strings`: Remove unused `hash32_utf8` function

* `strings`: Make `hash_utf8` and `decode_Utf8Str` private

* `strings`: Reorganize private functions

* 'strings': Raise error when non-string/-int types are passed to functions that don't accept them

* `strings`: Add `items()` method, add type hints, remove unused methods, restrict inputs to specific types, reorganize methods

* `Morphology`: Use `StringStore.items()` to enumerate features when pickling

* `test_stringstore`: Update pre-Python 3 tests

* Update `StringStore` docs

* Fix `get_string_id` imports

* Replace redundant test with tests for type checking

* Rename `_retrieve_interned_str`, remove `.get` default arg

* Add `get_string_id` to `strings.pyi`
Remove `mypy` ignore directives from imports of the above

* `strings.pyi`: Replace functions that consume `Union`-typed params with overloads

* `strings.pyi`: Revert some function signatures

* Update `SYMBOLS_BY_INT` lookups and error codes post-merge

* Revert clobbered change introduced in a previous merge

* Remove unnecessary type hint

* Invert tuple order in `StringStore.items()`

* Add test for `StringStore.items()`

* Revert "`Morphology`: Use `StringStore.items()` to enumerate features when pickling"

This reverts commit 1af9510ceb.

* Rename `keys` and `key_map`

* Add `keys()` and `values()`

* Add comment about the inverted key-value semantics in the API

* Fix type hints

* Implement `keys()`, `values()`, `items()` without generators

* Fix type hints, remove unnecessary boxing

* Update docs

* Simplify `keys/values/items()` impl

* `mypy` fix

* Fix error message, doc fixes
This commit is contained in:
Madeesh Kannan 2022-10-06 10:51:06 +02:00 committed by GitHub
parent c6704f368c
commit 446a3ecf34
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
9 changed files with 339 additions and 264 deletions
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4
spacy/errors.py
View File

@ -252,7 +252,7 @@ class Errors(metaclass=ErrorsWithCodes):
E012 = ("Cannot add pattern for zero tokens to matcher.\nKey: {key}")
E016 = ("MultitaskObjective target should be function or one of: dep, "
"tag, ent, dep_tag_offset, ent_tag.")
E017 = ("Can only add unicode or bytes. Got type: {value_type}")
E017 = ("Can only add 'str' inputs to StringStore. Got type: {value_type}")
E018 = ("Can't retrieve string for hash '{hash_value}'. This usually "
"refers to an issue with the `Vocab` or `StringStore`.")
E019 = ("Can't create transition with unknown action ID: {action}. Action "
@ -955,6 +955,8 @@ class Errors(metaclass=ErrorsWithCodes):
# v4 error strings
E4000 = ("Expected a Doc as input, but got: '{type}'")
E4001 = ("Expected input to be one of the following types: ({expected_types}), "
"but got '{received_type}'")
# Deprecated model shortcuts, only used in errors and warnings

2
spacy/matcher/matcher.pyx
View File

@ -22,7 +22,7 @@ from ..attrs cimport ID, attr_id_t, NULL_ATTR, ORTH, POS, TAG, DEP, LEMMA, MORPH
from ..schemas import validate_token_pattern
from ..errors import Errors, MatchPatternError, Warnings
from ..strings import get_string_id
from ..strings cimport get_string_id
from ..attrs import IDS

21
spacy/strings.pxd
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@ -1,4 +1,4 @@
from libc.stdint cimport int64_t
from libc.stdint cimport int64_t, uint32_t
from libcpp.vector cimport vector
from libcpp.set cimport set
from cymem.cymem cimport Pool
@ -7,13 +7,6 @@ from murmurhash.mrmr cimport hash64
from .typedefs cimport attr_t, hash_t
cpdef hash_t hash_string(str string) except 0
cdef hash_t hash_utf8(char* utf8_string, int length) nogil
cdef str decode_Utf8Str(const Utf8Str* string)
ctypedef union Utf8Str:
unsigned char[8] s
unsigned char* p
@ -21,9 +14,13 @@ ctypedef union Utf8Str:
cdef class StringStore:
cdef Pool mem
cdef vector[hash_t] _keys
cdef PreshMap _map
cdef vector[hash_t] keys
cdef public PreshMap _map
cdef hash_t _intern_str(self, str string)
cdef Utf8Str* _allocate_str_repr(self, const unsigned char* chars, uint32_t length) except *
cdef str _decode_str_repr(self, const Utf8Str* string)
cdef const Utf8Str* intern_unicode(self, str py_string)
cdef const Utf8Str* _intern_utf8(self, char* utf8_string, int length, hash_t* precalculated_hash)
cpdef hash_t hash_string(object string) except -1
cpdef hash_t get_string_id(object string_or_hash) except -1

23
spacy/strings.pyi
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@ -1,21 +1,20 @@
from typing import Optional, Iterable, Iterator, Union, Any, overload
from typing import List, Optional, Iterable, Iterator, Union, Any, Tuple, overload
from pathlib import Path
def get_string_id(key: Union[str, int]) -> int: ...
class StringStore:
def __init__(
self, strings: Optional[Iterable[str]] = ..., freeze: bool = ...
) -> None: ...
def __init__(self, strings: Optional[Iterable[str]]) -> None: ...
@overload
def __getitem__(self, string_or_id: Union[bytes, str]) -> int: ...
def __getitem__(self, string_or_hash: str) -> int: ...
@overload
def __getitem__(self, string_or_id: int) -> str: ...
def as_int(self, key: Union[bytes, str, int]) -> int: ...
def as_string(self, key: Union[bytes, str, int]) -> str: ...
def __getitem__(self, string_or_hash: int) -> str: ...
def as_int(self, string_or_hash: Union[str, int]) -> int: ...
def as_string(self, string_or_hash: Union[str, int]) -> str: ...
def add(self, string: str) -> int: ...
def items(self) -> List[Tuple[str, int]]: ...
def keys(self) -> List[str]: ...
def values(self) -> List[int]: ...
def __len__(self) -> int: ...
def __contains__(self, string: str) -> bool: ...
def __contains__(self, string_or_hash: Union[str, int]) -> bool: ...
def __iter__(self) -> Iterator[str]: ...
def __reduce__(self) -> Any: ...
def to_disk(self, path: Union[str, Path]) -> None: ...
@ -23,3 +22,5 @@ class StringStore:
def to_bytes(self, **kwargs: Any) -> bytes: ...
def from_bytes(self, bytes_data: bytes, **kwargs: Any) -> StringStore: ...
def _reset_and_load(self, strings: Iterable[str]) -> None: ...
def get_string_id(string_or_hash: Union[str, int]) -> int: ...

426
spacy/strings.pyx
View File

@ -1,9 +1,10 @@
# cython: infer_types=True
from typing import Optional, Union, Iterable, Tuple, Callable, Any, List, Iterator
cimport cython
from libc.string cimport memcpy
from libcpp.set cimport set
from libc.stdint cimport uint32_t
from murmurhash.mrmr cimport hash64, hash32
from murmurhash.mrmr cimport hash64
import srsly
@ -14,105 +15,13 @@ from .symbols import NAMES as SYMBOLS_BY_INT
from .errors import Errors
from . import util
# Not particularly elegant, but this is faster than `isinstance(key, numbers.Integral)`
cdef inline bint _try_coerce_to_hash(object key, hash_t* out_hash):
try:
out_hash[0] = key
return True
except:
return False
def get_string_id(key):
"""Get a string ID, handling the reserved symbols correctly. If the key is
already an ID, return it.
This function optimises for convenience over performance, so shouldn't be
used in tight loops.
"""
cdef hash_t str_hash
if isinstance(key, str):
if len(key) == 0:
return 0
symbol = SYMBOLS_BY_STR.get(key, None)
if symbol is not None:
return symbol
else:
chars = key.encode("utf8")
return hash_utf8(chars, len(chars))
elif _try_coerce_to_hash(key, &str_hash):
# Coerce the integral key to the expected primitive hash type.
# This ensures that custom/overloaded "primitive" data types
# such as those implemented by numpy are not inadvertently used
# downsteam (as these are internally implemented as custom PyObjects
# whose comparison operators can incur a significant overhead).
return str_hash
else:
# TODO: Raise an error instead
return key
cpdef hash_t hash_string(str string) except 0:
chars = string.encode("utf8")
return hash_utf8(chars, len(chars))
cdef hash_t hash_utf8(char* utf8_string, int length) nogil:
return hash64(utf8_string, length, 1)
cdef uint32_t hash32_utf8(char* utf8_string, int length) nogil:
return hash32(utf8_string, length, 1)
cdef str decode_Utf8Str(const Utf8Str* string):
cdef int i, length
if string.s[0] < sizeof(string.s) and string.s[0] != 0:
return string.s[1:string.s[0]+1].decode("utf8")
elif string.p[0] < 255:
return string.p[1:string.p[0]+1].decode("utf8")
else:
i = 0
length = 0
while string.p[i] == 255:
i += 1
length += 255
length += string.p[i]
i += 1
return string.p[i:length + i].decode("utf8")
cdef Utf8Str* _allocate(Pool mem, const unsigned char* chars, uint32_t length) except *:
cdef int n_length_bytes
cdef int i
cdef Utf8Str* string = <Utf8Str*>mem.alloc(1, sizeof(Utf8Str))
cdef uint32_t ulength = length
if length < sizeof(string.s):
string.s[0] = <unsigned char>length
memcpy(&string.s[1], chars, length)
return string
elif length < 255:
string.p = <unsigned char*>mem.alloc(length + 1, sizeof(unsigned char))
string.p[0] = length
memcpy(&string.p[1], chars, length)
return string
else:
i = 0
n_length_bytes = (length // 255) + 1
string.p = <unsigned char*>mem.alloc(length + n_length_bytes, sizeof(unsigned char))
for i in range(n_length_bytes-1):
string.p[i] = 255
string.p[n_length_bytes-1] = length % 255
memcpy(&string.p[n_length_bytes], chars, length)
return string
cdef class StringStore:
"""Look up strings by 64-bit hashes.
"""Look up strings by 64-bit hashes. Implicitly handles reserved symbols.
DOCS: https://spacy.io/api/stringstore
"""
def __init__(self, strings=None, freeze=False):
def __init__(self, strings: Optional[Iterable[str]] = None):
"""Create the StringStore.
strings (iterable): A sequence of unicode strings to add to the store.
@ -123,128 +32,127 @@ cdef class StringStore:
for string in strings:
self.add(string)
def __getitem__(self, object string_or_id):
"""Retrieve a string from a given hash, or vice versa.
def __getitem__(self, string_or_hash: Union[str, int]) -> Union[str, int]:
"""Retrieve a string from a given hash. If a string
is passed as the input, add it to the store and return
its hash.
string_or_id (bytes, str or uint64): The value to encode.
Returns (str / uint64): The value to be retrieved.
string_or_hash (int / str): The hash value to lookup or the string to store.
RETURNS (str / int): The stored string or the hash of the newly added string.
"""
cdef hash_t str_hash
cdef Utf8Str* utf8str = NULL
if isinstance(string_or_id, str):
if len(string_or_id) == 0:
return 0
# Return early if the string is found in the symbols LUT.
symbol = SYMBOLS_BY_STR.get(string_or_id, None)
if symbol is not None:
return symbol
if isinstance(string_or_hash, str):
return self.add(string_or_hash)
else:
return hash_string(string_or_id)
elif isinstance(string_or_id, bytes):
return hash_utf8(string_or_id, len(string_or_id))
elif _try_coerce_to_hash(string_or_id, &str_hash):
if str_hash == 0:
return ""
elif str_hash in SYMBOLS_BY_INT:
return SYMBOLS_BY_INT[str_hash]
else:
utf8str = <Utf8Str*>self._map.get(str_hash)
else:
# TODO: Raise an error instead
utf8str = <Utf8Str*>self._map.get(string_or_id)
return self._get_interned_str(string_or_hash)
if utf8str is NULL:
raise KeyError(Errors.E018.format(hash_value=string_or_id))
else:
return decode_Utf8Str(utf8str)
def __contains__(self, string_or_hash: Union[str, int]) -> bool:
"""Check whether a string or a hash is in the store.
def as_int(self, key):
"""If key is an int, return it; otherwise, get the int value."""
if not isinstance(key, str):
return key
else:
return self[key]
def as_string(self, key):
"""If key is a string, return it; otherwise, get the string value."""
if isinstance(key, str):
return key
else:
return self[key]
def add(self, string):
"""Add a string to the StringStore.
string (str): The string to add.
RETURNS (uint64): The string's hash value.
"""
cdef hash_t str_hash
if isinstance(string, str):
if string in SYMBOLS_BY_STR:
return SYMBOLS_BY_STR[string]
string = string.encode("utf8")
str_hash = hash_utf8(string, len(string))
self._intern_utf8(string, len(string), &str_hash)
elif isinstance(string, bytes):
if string in SYMBOLS_BY_STR:
return SYMBOLS_BY_STR[string]
str_hash = hash_utf8(string, len(string))
self._intern_utf8(string, len(string), &str_hash)
else:
raise TypeError(Errors.E017.format(value_type=type(string)))
return str_hash
def __len__(self):
"""The number of strings in the store.
RETURNS (int): The number of strings in the store.
"""
return self.keys.size()
def __contains__(self, string_or_id not None):
"""Check whether a string or ID is in the store.
string_or_id (str or int): The string to check.
string (str / int): The string/hash to check.
RETURNS (bool): Whether the store contains the string.
"""
cdef hash_t str_hash
if isinstance(string_or_id, str):
if len(string_or_id) == 0:
return True
elif string_or_id in SYMBOLS_BY_STR:
return True
str_hash = hash_string(string_or_id)
elif _try_coerce_to_hash(string_or_id, &str_hash):
pass
else:
# TODO: Raise an error instead
return self._map.get(string_or_id) is not NULL
cdef hash_t str_hash = get_string_id(string_or_hash)
if str_hash in SYMBOLS_BY_INT:
return True
else:
return self._map.get(str_hash) is not NULL
def __iter__(self):
"""Iterate over the strings in the store, in order.
def __iter__(self) -> Iterator[str]:
"""Iterate over the strings in the store in insertion order.
YIELDS (str): A string in the store.
RETURNS: An iterable collection of strings.
"""
cdef int i
cdef hash_t key
for i in range(self.keys.size()):
key = self.keys[i]
utf8str = <Utf8Str*>self._map.get(key)
yield decode_Utf8Str(utf8str)
# TODO: Iterate OOV here?
return iter(self.keys())
def __reduce__(self):
strings = list(self)
return (StringStore, (strings,), None, None, None)
def __len__(self) -> int:
"""The number of strings in the store.
RETURNS (int): The number of strings in the store.
"""
return self._keys.size()
def add(self, string: str) -> int:
"""Add a string to the StringStore.
string (str): The string to add.
RETURNS (uint64): The string's hash value.
"""
if not isinstance(string, str):
raise TypeError(Errors.E017.format(value_type=type(string)))
if string in SYMBOLS_BY_STR:
return SYMBOLS_BY_STR[string]
else:
return self._intern_str(string)
def as_int(self, string_or_hash: Union[str, int]) -> str:
"""If a hash value is passed as the input, return it as-is. If the input
is a string, return its corresponding hash.
string_or_hash (str / int): The string to hash or a hash value.
RETURNS (int): The hash of the string or the input hash value.
"""
if isinstance(string_or_hash, int):
return string_or_hash
else:
return get_string_id(string_or_hash)
def as_string(self, string_or_hash: Union[str, int]) -> str:
"""If a string is passed as the input, return it as-is. If the input
is a hash value, return its corresponding string.
string_or_hash (str / int): The hash value to lookup or a string.
RETURNS (str): The stored string or the input string.
"""
if isinstance(string_or_hash, str):
return string_or_hash
else:
return self._get_interned_str(string_or_hash)
def items(self) -> List[Tuple[str, int]]:
"""Iterate over the stored strings and their hashes in insertion order.
RETURNS: A list of string-hash pairs.
"""
# Even though we internally store the hashes as keys and the strings as
# values, we invert the order in the public API to keep it consistent with
# the implementation of the `__iter__` method (where we wish to iterate over
# the strings in the store).
cdef int i
pairs = [None] * self._keys.size()
for i in range(self._keys.size()):
str_hash = self._keys[i]
utf8str = <Utf8Str*>self._map.get(str_hash)
pairs[i] = (self._decode_str_repr(utf8str), str_hash)
return pairs
def keys(self) -> List[str]:
"""Iterate over the stored strings in insertion order.
RETURNS: A list of strings.
"""
cdef int i
strings = [None] * self._keys.size()
for i in range(self._keys.size()):
utf8str = <Utf8Str*>self._map.get(self._keys[i])
strings[i] = self._decode_str_repr(utf8str)
return strings
def values(self) -> List[int]:
"""Iterate over the stored strings hashes in insertion order.
RETURNS: A list of string hashs.
"""
cdef int i
hashes = [None] * self._keys.size()
for i in range(self._keys.size()):
hashes[i] = self._keys[i]
return hashes
def to_disk(self, path):
"""Save the current state to a directory.
@ -294,24 +202,122 @@ cdef class StringStore:
def _reset_and_load(self, strings):
self.mem = Pool()
self._map = PreshMap()
self.keys.clear()
self._keys.clear()
for string in strings:
self.add(string)
cdef const Utf8Str* intern_unicode(self, str py_string):
# 0 means missing, but we don't bother offsetting the index.
cdef bytes byte_string = py_string.encode("utf8")
return self._intern_utf8(byte_string, len(byte_string), NULL)
def _get_interned_str(self, hash_value: int) -> str:
cdef hash_t str_hash
if not _try_coerce_to_hash(hash_value, &str_hash):
raise TypeError(Errors.E4001.format(expected_types="'int'", received_type=type(hash_value)))
@cython.final
cdef const Utf8Str* _intern_utf8(self, char* utf8_string, int length, hash_t* precalculated_hash):
# Handle reserved symbols and empty strings correctly.
if str_hash == 0:
return ""
symbol = SYMBOLS_BY_INT.get(str_hash)
if symbol is not None:
return symbol
utf8str = <Utf8Str*>self._map.get(str_hash)
if utf8str is NULL:
raise KeyError(Errors.E018.format(hash_value=str_hash))
else:
return self._decode_str_repr(utf8str)
cdef hash_t _intern_str(self, str string):
# TODO: This function's API/behaviour is an unholy mess...
# 0 means missing, but we don't bother offsetting the index.
cdef hash_t key = precalculated_hash[0] if precalculated_hash is not NULL else hash_utf8(utf8_string, length)
chars = string.encode('utf-8')
cdef hash_t key = hash64(<unsigned char*>chars, len(chars), 1)
cdef Utf8Str* value = <Utf8Str*>self._map.get(key)
if value is not NULL:
return value
value = _allocate(self.mem, <unsigned char*>utf8_string, length)
return key
value = self._allocate_str_repr(<unsigned char*>chars, len(chars))
self._map.set(key, value)
self.keys.push_back(key)
return value
self._keys.push_back(key)
return key
cdef Utf8Str* _allocate_str_repr(self, const unsigned char* chars, uint32_t length) except *:
cdef int n_length_bytes
cdef int i
cdef Utf8Str* string = <Utf8Str*>self.mem.alloc(1, sizeof(Utf8Str))
cdef uint32_t ulength = length
if length < sizeof(string.s):
string.s[0] = <unsigned char>length
memcpy(&string.s[1], chars, length)
return string
elif length < 255:
string.p = <unsigned char*>self.mem.alloc(length + 1, sizeof(unsigned char))
string.p[0] = length
memcpy(&string.p[1], chars, length)
return string
else:
i = 0
n_length_bytes = (length // 255) + 1
string.p = <unsigned char*>self.mem.alloc(length + n_length_bytes, sizeof(unsigned char))
for i in range(n_length_bytes-1):
string.p[i] = 255
string.p[n_length_bytes-1] = length % 255
memcpy(&string.p[n_length_bytes], chars, length)
return string
cdef str _decode_str_repr(self, const Utf8Str* string):
cdef int i, length
if string.s[0] < sizeof(string.s) and string.s[0] != 0:
return string.s[1:string.s[0]+1].decode('utf-8')
elif string.p[0] < 255:
return string.p[1:string.p[0]+1].decode('utf-8')
else:
i = 0
length = 0
while string.p[i] == 255:
i += 1
length += 255
length += string.p[i]
i += 1
return string.p[i:length + i].decode('utf-8')
cpdef hash_t hash_string(object string) except -1:
if not isinstance(string, str):
raise TypeError(Errors.E4001.format(expected_types="'str'", received_type=type(string)))
# Handle reserved symbols and empty strings correctly.
if len(string) == 0:
return 0
symbol = SYMBOLS_BY_STR.get(string)
if symbol is not None:
return symbol
chars = string.encode('utf-8')
return hash64(<unsigned char*>chars, len(chars), 1)
cpdef hash_t get_string_id(object string_or_hash) except -1:
cdef hash_t str_hash
try:
return hash_string(string_or_hash)
except:
if _try_coerce_to_hash(string_or_hash, &str_hash):
# Coerce the integral key to the expected primitive hash type.
# This ensures that custom/overloaded "primitive" data types
# such as those implemented by numpy are not inadvertently used
# downsteam (as these are internally implemented as custom PyObjects
# whose comparison operators can incur a significant overhead).
return str_hash
else:
raise TypeError(Errors.E4001.format(expected_types="'str','int'", received_type=type(string_or_hash)))
# Not particularly elegant, but this is faster than `isinstance(key, numbers.Integral)`
cdef inline bint _try_coerce_to_hash(object key, hash_t* out_hash):
try:
out_hash[0] = key
return True
except:
return False

41
spacy/tests/vocab_vectors/test_stringstore.py
View File

@ -24,6 +24,14 @@ def test_stringstore_from_api_docs(stringstore):
stringstore.add("orange")
all_strings = [s for s in stringstore]
assert all_strings == ["apple", "orange"]
assert all_strings == list(stringstore.keys())
all_strings_and_hashes = list(stringstore.items())
assert all_strings_and_hashes == [
("apple", 8566208034543834098),
("orange", 2208928596161743350),
]
all_hashes = list(stringstore.values())
assert all_hashes == [8566208034543834098, 2208928596161743350]
banana_hash = stringstore.add("banana")
assert len(stringstore) == 3
assert banana_hash == 2525716904149915114
@ -31,12 +39,25 @@ def test_stringstore_from_api_docs(stringstore):
assert stringstore["banana"] == banana_hash
@pytest.mark.parametrize("text1,text2,text3", [(b"Hello", b"goodbye", b"hello")])
def test_stringstore_save_bytes(stringstore, text1, text2, text3):
key = stringstore.add(text1)
assert stringstore[text1] == key
assert stringstore[text2] != key
assert stringstore[text3] != key
@pytest.mark.parametrize(
"val_bytes,val_float,val_list,val_text,val_hash",
[(b"Hello", 1.1, ["abc"], "apple", 8566208034543834098)],
)
def test_stringstore_type_checking(
stringstore, val_bytes, val_float, val_list, val_text, val_hash
):
with pytest.raises(TypeError):
assert stringstore[val_bytes]
with pytest.raises(TypeError):
stringstore.add(val_float)
with pytest.raises(TypeError):
assert val_list not in stringstore
key = stringstore.add(val_text)
assert val_hash == key
assert stringstore[val_hash] == val_text
@pytest.mark.parametrize("text1,text2,text3", [("Hello", "goodbye", "hello")])
@ -47,19 +68,19 @@ def test_stringstore_save_unicode(stringstore, text1, text2, text3):
assert stringstore[text3] != key
@pytest.mark.parametrize("text", [b"A"])
@pytest.mark.parametrize("text", ["A"])
def test_stringstore_retrieve_id(stringstore, text):
key = stringstore.add(text)
assert len(stringstore) == 1
assert stringstore[key] == text.decode("utf8")
assert stringstore[key] == text
with pytest.raises(KeyError):
stringstore[20000]
@pytest.mark.parametrize("text1,text2", [(b"0123456789", b"A")])
@pytest.mark.parametrize("text1,text2", [("0123456789", "A")])
def test_stringstore_med_string(stringstore, text1, text2):
store = stringstore.add(text1)
assert stringstore[store] == text1.decode("utf8")
assert stringstore[store] == text1
stringstore.add(text2)
assert stringstore[text1] == store

2
spacy/tokens/graph.pyx
View File

@ -12,7 +12,7 @@ from murmurhash.mrmr cimport hash64
from .. import Errors
from ..typedefs cimport hash_t
from ..strings import get_string_id
from ..strings cimport get_string_id
from ..structs cimport EdgeC, GraphC
from .token import Token

2
spacy/tokens/retokenizer.pyx
View File

@ -18,7 +18,7 @@ from .underscore import is_writable_attr
from ..attrs import intify_attrs
from ..util import SimpleFrozenDict
from ..errors import Errors
from ..strings import get_string_id
from ..strings cimport get_string_id
cdef class Retokenizer:

76
website/docs/api/stringstore.md
View File

@ -40,7 +40,8 @@ Get the number of strings in the store.
## StringStore.\_\_getitem\_\_ {#getitem tag="method"}
Retrieve a string from a given hash, or vice versa.
Retrieve a string from a given hash. If a string is passed as the input, add it
to the store and return its hash.
> #### Example
>
@ -52,13 +53,13 @@ Retrieve a string from a given hash, or vice versa.
> ```
| Name | Description |
| -------------- | ----------------------------------------------- |
| `string_or_id` | The value to encode. ~~Union[bytes, str, int]~~ |
| **RETURNS** | The value to be retrieved. ~~Union[str, int]~~ |
| ---------------- | ---------------------------------------------------------------------------- |
| `string_or_hash` | The hash value to lookup or the string to store. ~~Union[str, int]~~ |
| **RETURNS** | The stored string or the hash of the newly added string. ~~Union[str, int]~~ |
## StringStore.\_\_contains\_\_ {#contains tag="method"}
Check whether a string is in the store.
Check whether a string or a hash is in the store.
> #### Example
>
@ -69,14 +70,13 @@ Check whether a string is in the store.
> ```
| Name | Description |
| ----------- | ----------------------------------------------- |
| `string` | The string to check. ~~str~~ |
| **RETURNS** | Whether the store contains the string. ~~bool~~ |
| ---------------- | ------------------------------------------------------- |
| `string_or_hash` | The string or hash to check. ~~Union[str, int]~~ |
| **RETURNS** | Whether the store contains the string or hash. ~~bool~~ |
## StringStore.\_\_iter\_\_ {#iter tag="method"}
Iterate over the strings in the store, in order. Note that a newly initialized
store will always include an empty string `""` at position `0`.
Iterate over the stored strings in insertion order.
> #### Example
>
@ -87,10 +87,58 @@ store will always include an empty string `""` at position `0`.
> ```
| Name | Description |
| ---------- | ------------------------------ |
| **YIELDS** | A string in the store. ~~str~~ |
| ----------- | ------------------------------ |
| **RETURNS** | A string in the store. ~~str~~ |
## StringStore.add {#add tag="method" new="2"}
## StringStore.items {#iter tag="method" new="4"}
Iterate over the stored string-hash pairs in insertion order.
> #### Example
>
> ```python
> stringstore = StringStore(["apple", "orange"])
> all_strings_and_hashes = stringstore.items()
> assert all_strings_and_hashes == [("apple", 8566208034543834098), ("orange", 2208928596161743350)]
> ```
| Name | Description |
| ----------- | ------------------------------------------------------ |
| **RETURNS** | A list of string-hash pairs. ~~List[Tuple[str, int]]~~ |
## StringStore.keys {#iter tag="method" new="4"}
Iterate over the stored strings in insertion order.
> #### Example
>
> ```python
> stringstore = StringStore(["apple", "orange"])
> all_strings = stringstore.keys()
> assert all_strings == ["apple", "orange"]
> ```
| Name | Description |
| ----------- | -------------------------------- |
| **RETURNS** | A list of strings. ~~List[str]~~ |
## StringStore.values {#iter tag="method" new="4"}
Iterate over the stored string hashes in insertion order.
> #### Example
>
> ```python
> stringstore = StringStore(["apple", "orange"])
> all_hashes = stringstore.values()
> assert all_hashes == [8566208034543834098, 2208928596161743350]
> ```
| Name | Description |
| ----------- | -------------------------------------- |
| **RETURNS** | A list of string hashes. ~~List[int]~~ |
## StringStore.add {#add tag="method"}
Add a string to the `StringStore`.
@ -110,7 +158,7 @@ Add a string to the `StringStore`.
| `string` | The string to add. ~~str~~ |
| **RETURNS** | The string's hash value. ~~int~~ |
## StringStore.to_disk {#to_disk tag="method" new="2"}
## StringStore.to_disk {#to_disk tag="method"}
Save the current state to a directory.