Generated by Cython 0.27.2
Yellow lines hint at Python interaction.
Click on a line that starts with a "+
" to see the C code that Cython generated for it.
Raw output: vlen.c
+001: # -*- coding: utf-8 -*-
__pyx_t_2 = __Pyx_PyDict_NewPresized(0); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 1, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_2); if (PyDict_SetItem(__pyx_d, __pyx_n_s_test, __pyx_t_2) < 0) __PYX_ERR(0, 1, __pyx_L1_error) __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
002: # cython: embedsignature=True
003: # cython: profile=False
004: # cython: linetrace=False
005: # cython: binding=False
006: from __future__ import absolute_import, print_function, division
+007: import struct
__pyx_t_1 = __Pyx_Import(__pyx_n_s_struct, 0, 0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 7, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_1); if (PyDict_SetItem(__pyx_d, __pyx_n_s_struct, __pyx_t_1) < 0) __PYX_ERR(0, 7, __pyx_L1_error) __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
008:
009:
010: import cython
011: cimport cython
+012: import numpy as np
__pyx_t_1 = __Pyx_Import(__pyx_n_s_numpy, 0, 0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 12, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_1); if (PyDict_SetItem(__pyx_d, __pyx_n_s_np, __pyx_t_1) < 0) __PYX_ERR(0, 12, __pyx_L1_error) __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+013: from .abc import Codec
__pyx_t_1 = PyList_New(1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 13, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_1); __Pyx_INCREF(__pyx_n_s_Codec); __Pyx_GIVEREF(__pyx_n_s_Codec); PyList_SET_ITEM(__pyx_t_1, 0, __pyx_n_s_Codec); __pyx_t_2 = __Pyx_Import(__pyx_n_s_abc, __pyx_t_1, 1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 13, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_2); __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0; __pyx_t_1 = __Pyx_ImportFrom(__pyx_t_2, __pyx_n_s_Codec); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 13, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_1); if (PyDict_SetItem(__pyx_d, __pyx_n_s_Codec, __pyx_t_1) < 0) __PYX_ERR(0, 13, __pyx_L1_error) __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0; __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
014: from .compat_ext cimport Buffer
+015: from .compat_ext import Buffer
__pyx_t_2 = PyList_New(1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 15, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_2); __Pyx_INCREF(__pyx_n_s_Buffer); __Pyx_GIVEREF(__pyx_n_s_Buffer); PyList_SET_ITEM(__pyx_t_2, 0, __pyx_n_s_Buffer); __pyx_t_1 = __Pyx_Import(__pyx_n_s_compat_ext, __pyx_t_2, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 15, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_1); __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0; __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
016: from cpython cimport (PyBytes_GET_SIZE, PyBytes_AS_STRING, PyBytes_Check,
017: PyBytes_FromStringAndSize, PyUnicode_AsUTF8String)
018: from cpython.buffer cimport PyBUF_ANY_CONTIGUOUS
019: from libc.string cimport memcpy
020:
021:
022: cdef extern from "stdint_compat.h":
023: void store_le32(char *c, int y)
024: int load_le32(const char *c)
025:
026:
027: cdef extern from "Python.h":
028: bytearray PyByteArray_FromStringAndSize(char *v, Py_ssize_t l)
029: char* PyByteArray_AS_STRING(object string)
030: object PyUnicode_FromStringAndSize(const char *u, Py_ssize_t size)
031: int PyUnicode_Check(object text)
032:
033:
034: # 4 bytes to store number of items
+035: cdef Py_ssize_t HEADER_LENGTH = 4
__pyx_v_9numcodecs_4vlen_HEADER_LENGTH = 4;
036:
037:
+038: def check_out_param(out, n_items):
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+039: if not isinstance(out, np.ndarray):
__pyx_t_1 = __Pyx_GetModuleGlobalName(__pyx_n_s_np); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 39, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_1); __pyx_t_2 = __Pyx_PyObject_GetAttrStr(__pyx_t_1, __pyx_n_s_ndarray); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 39, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_2); __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0; __pyx_t_3 = PyObject_IsInstance(__pyx_v_out, __pyx_t_2); if (unlikely(__pyx_t_3 == ((int)-1))) __PYX_ERR(0, 39, __pyx_L1_error) __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0; __pyx_t_4 = ((!(__pyx_t_3 != 0)) != 0); if (__pyx_t_4) { /* … */ }
+040: raise TypeError('out must be 1-dimensional array')
__pyx_t_2 = __Pyx_PyObject_Call(__pyx_builtin_TypeError, __pyx_tuple_, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 40, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_2); __Pyx_Raise(__pyx_t_2, 0, 0, 0); __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0; __PYX_ERR(0, 40, __pyx_L1_error) /* … */ __pyx_tuple_ = PyTuple_Pack(1, __pyx_kp_s_out_must_be_1_dimensional_array); if (unlikely(!__pyx_tuple_)) __PYX_ERR(0, 40, __pyx_L1_error) __Pyx_GOTREF(__pyx_tuple_); __Pyx_GIVEREF(__pyx_tuple_);
+041: if out.dtype != object:
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+042: raise ValueError('out must be object array')
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+043: out = out.reshape(-1, order='A')
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+045: raise ValueError('out is too small')
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+046: return out
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047:
048:
+049: class VLenUTF8(Codec):
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050: """Encode variable-length unicode string objects via UTF-8.
051:
052: Examples
053: --------
054: >>> import numcodecs
055: >>> import numpy as np
056: >>> x = np.array(['foo', 'bar', 'baz'], dtype='object')
057: >>> codec = numcodecs.VLenUTF8()
058: >>> codec.decode(codec.encode(x))
059: array(['foo', 'bar', 'baz'], dtype=object)
060:
061: See Also
062: --------
063: numcodecs.pickles.Pickle, numcodecs.json.JSON, numcodecs.msgpacks.MsgPack
064:
065: Notes
066: -----
067: The encoded bytes values for each string are packed into a parquet-style byte array.
068:
069: """
070:
+071: codec_id = 'vlen-utf8'
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072:
+073: def __init__(self):
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074: pass
075:
076: @cython.wraparound(False)
077: @cython.boundscheck(False)
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133: @cython.boundscheck(False)
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135: cdef:
136: Buffer input_buffer
137: char* data
138: char* data_end
139: Py_ssize_t i, l, n_items, data_length, input_length
140:
141: # accept any buffer
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144:
145: # sanity checks
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148:
149: # obtain input data pointer
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152:
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155:
156: # setup output
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159: else:
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161:
162: # iterate and decode - N.B., do not try to cast `out` as object[:]
163: # as this causes segfaults, possibly similar to
164: # https://github.com/cython/cython/issues/1608
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175:
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177:
178:
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180: """Encode variable-length byte string objects.
181:
182: Examples
183: --------
184: >>> import numcodecs
185: >>> import numpy as np
186: >>> x = np.array([b'foo', b'bar', b'baz'], dtype='object')
187: >>> codec = numcodecs.VLenUTF8()
188: >>> codec.decode(codec.encode(x))
189: array([b'foo', b'bar', b'baz'], dtype=object)
190:
191: See Also
192: --------
193: numcodecs.pickles.Pickle
194:
195: Notes
196: -----
197: The bytes values for each string are packed into a parquet-style byte array.
198:
199: """
200:
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260: cdef:
261: Buffer input_buffer
262: char* data
263: char* data_end
264: Py_ssize_t i, l, n_items, data_length, input_length
265:
266: # accept any buffer
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269:
270: # sanity checks
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273:
274: # obtain input data pointer
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277:
278: # load number of items
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280:
281: # setup output
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284: else:
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286:
287: # iterate and decode - N.B., do not try to cast `out` as object[:]
288: # as this causes segfaults, possibly similar to
289: # https://github.com/cython/cython/issues/1608
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__pyx_v_data = (__pyx_v_data + __pyx_v_9numcodecs_4vlen_HEADER_LENGTH);
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__pyx_v_data = (__pyx_v_data + 4);
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__pyx_t_6 = (((__pyx_v_data + __pyx_v_l) > __pyx_v_data_end) != 0); if (__pyx_t_6) { /* … */ }
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300:
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302:
303:
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305: """Encode variable-length 1-dimensional arrays via UTF-8.
306:
307: Examples
308: --------
309: >>> import numcodecs
310: >>> import numpy as np
311: >>> x = np.array([[1, 3, 5], [4], [7, 9]], dtype='object')
312: >>> codec = numcodecs.VLenArray('<i4')
313: >>> codec.decode(codec.encode(x))
314: array([array([1, 2, 3], dtype=int32), array([4], dtype=int32),
315: array([5, 6], dtype=int32)], dtype=object)
316:
317: See Also
318: --------
319: numcodecs.pickles.Pickle, numcodecs.json.JSON, numcodecs.msgpacks.MsgPack
320:
321: Notes
322: -----
323: The binary data for each array are packed into a parquet-style byte array.
324:
325: """
326:
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398:
399: @cython.wraparound(False)
400: @cython.boundscheck(False)
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402: cdef:
403: Buffer input_buffer
404: char* data
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406: Py_ssize_t i, l, n_items, data_length, input_length
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428:
429: # iterate and decode - N.B., do not try to cast `out` as object[:]
430: # as this causes segfaults, possibly similar to
431: # https://github.com/cython/cython/issues/1608
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