lib/number-buffer.js - Code Metrics - Inspection of "Remove ES3 switches from the module." - rochars/byte-data - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — master ( 5099d5...8faa65 )

by Rafael S.

created 2018-07-31 18:37 UTC

lib/number-buffer.js A

↳ Parent: Project

Complexity

Total Complexity	14
Complexity/F	1.75

Size

Lines of Code	129
Function Count	8

Duplication

Duplicated Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	0
eloc	37
nc	1
dl	0
loc	129
rs	10
c	0
b	0
f	0
wmc	14
mnd	3
bc	13
fnc	8
bpm	1.625
cpm	1.75
noi	0

8 Functions

Rating	Name	Size	Complexity
A	number-buffer.js ➔ read32F_	5	1
A	number-buffer.js ➔ write32F_	7	1
A	number-buffer.js ➔ write16F_	3	1
A	number-buffer.js ➔ read16F_	3	1
A	number-buffer.js ➔ setReaderAndWriter_	17	4
A	number-buffer.js ➔ constructor	8	3
A	number-buffer.js ➔ read64F_	6	1
A	number-buffer.js ➔ write64F_	8	1

/*
 * Copyright (c) 2017-2018 Rafael da Silva Rocha.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */

/**
 * @fileoverview Sserialize and deserialize integers and floats.
 * @see https://github.com/rochars/byte-data
 */

import IntBuffer from './int-buffer.js';
import {validateType} from './validation.js';
import {unpack, pack} from 'ieee754-buffer';

/**
 * A class to pack and unpack integers and floating-point numbers.
 * Signed integers are two's complement.
 * Floating point are IEEE 754 standard.
 * @extends {IntBuffer}
 */
export default class NumberBuffer extends IntBuffer {
  
  constructor(theType) {
    validateType(theType);
    theType.signed = theType.float ? false : theType.signed;
    super(theType);
    this.offset = this.parser.bytes;
    this.parser.bytes = this.parser.bits === 64 ? 4 : this.parser.bytes;
    this.setReaderAndWriter_(theType);
  }

  /**
   * Read 1 16-bit float from bytes.
   * @see https://stackoverflow.com/a/8796597
   * @param {!Uint8Array|!Array<number>} bytes An array of bytes.
   * @param {number=} i The index to read.
   * @return {number}
   * @private
   */
  read16F_(bytes, i=0) {
    return unpack(bytes, i, 5, 11);
  }

  /**
   * Read 1 32-bit float from bytes using a TypedArray.
   * @param {!Uint8Array|!Array<number>} bytes An array of bytes.
   * @param {number=} i The index to read.
   * @return {number}
   * @private
   */
  read32F_(bytes, i=0) {
    //this.ui32_[0] = super.unpack(bytes, i);
    //return this.f32_[0];
    return unpack(bytes, i, 8, 23);
  }

  /**
   * Read 1 64-bit float from bytes using a TypedArray.
   * Thanks https://gist.github.com/kg/2192799
   * @param {!Uint8Array|!Array<number>} bytes An array of bytes.
   * @param {number=} i The index to read.
   * @return {number}
   * @private
   */
  read64F_(bytes, i=0) {
    //this.ui32_[this.HIGH_] = super.unpack(bytes, i);
    //this.ui32_[this.LOW_] = super.unpack(bytes, i + 4);
    //return this.f64_[0];
    return unpack(bytes, i, 11, 52);
  }

  /**
   * Write one 16-bit float as a binary value.
   * @param {!Uint8Array|!Array<number>} bytes An array of bytes.
   * @param {number} num The number to write as bytes.
   * @param {number=} j The index being written in the byte buffer.
   * @return {number} The next index to write on the byte buffer.
   * @private
   */
  write16F_(bytes, num, j=0) {
    return pack(bytes, j, num, 5, 11);
  }

  /**
   * Write one 32-bit float as a binary value using a TypedArray.
   * @param {!Uint8Array|!Array<number>} bytes An array of bytes.
   * @param {number} num The number to write as bytes.
   * @param {number=} j The index being written in the byte buffer.
   * @return {number} The next index to write on the byte buffer.
   * @private
   */
  write32F_(bytes, num, j=0) {
    //if (num !== num) {
      return pack(bytes, j, num, 8, 23);
    //}
    //this.f32_[0] = num;
    //return super.pack(bytes, this.ui32_[0], j);
  }

  /**
   * Write one 64-bit float as a binary value using a TypedArray.
   * @param {!Uint8Array|!Array<number>} bytes An array of bytes.
   * @param {number} num The number to write as bytes.
   * @param {number=} j The index being written in the byte buffer.
   * @return {number} The next index to write on the byte buffer.
   * @private
   */
  write64F_(bytes, num, j=0) {
    //if (num !== num) {
      return pack(bytes, j, num, 11, 52);
    //}
    //this.f64_[0] = num;
    //j = super.pack(bytes, this.ui32_[this.HIGH_], j);
    //return super.pack(bytes, this.ui32_[this.LOW_], j);
  }

  /**
   * Set the functions to pack and unpack numbers.
   * @param {!Object} theType The type definition.
   * @private
   */
  setReaderAndWriter_(theType) {
    if (theType.float) {
      if (theType.bits == 16) {
        this.unpack = this.read16F_;
        this.pack = this.write16F_;
      } else if(theType.bits == 32) {
        this.unpack = this.read32F_;
        this.pack = this.write32F_;
      } else {
        this.unpack = this.read64F_;
        this.pack = this.write64F_;
      }
    } else {
      this.unpack = super.unpack;
      this.pack = super.pack;
    }
  }
}


1			/*
2			* Copyright (c) 2017-2018 Rafael da Silva Rocha.
3			*
4			* Permission is hereby granted, free of charge, to any person obtaining
5			* a copy of this software and associated documentation files (the
6			* "Software"), to deal in the Software without restriction, including
7			* without limitation the rights to use, copy, modify, merge, publish,
8			* distribute, sublicense, and/or sell copies of the Software, and to
9			* permit persons to whom the Software is furnished to do so, subject to
10			* the following conditions:
11			*
12			* The above copyright notice and this permission notice shall be
13			* included in all copies or substantial portions of the Software.
14			*
15			* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16			* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17			* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18			* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
19			* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
20			* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
21			* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22			*
23			*/
24
25			/**
26			* @fileoverview Sserialize and deserialize integers and floats.
27			* @see https://github.com/rochars/byte-data
28			*/
29
30			import IntBuffer from './int-buffer.js';
31			import {validateType} from './validation.js';
32			import {unpack, pack} from 'ieee754-buffer';
33
34			/**
35			* A class to pack and unpack integers and floating-point numbers.
36			* Signed integers are two's complement.
37			* Floating point are IEEE 754 standard.
38			* @extends {IntBuffer}
39			*/
40			export default class NumberBuffer extends IntBuffer {
41
42			constructor(theType) {
43			validateType(theType);
44			theType.signed = theType.float ? false : theType.signed;
45			super(theType);
46			this.offset = this.parser.bytes;
47			this.parser.bytes = this.parser.bits === 64 ? 4 : this.parser.bytes;
48			this.setReaderAndWriter_(theType);
49			}
50
51			/**
52			* Read 1 16-bit float from bytes.
53			* @see https://stackoverflow.com/a/8796597
54			* @param {!Uint8Array\|!Array<number>} bytes An array of bytes.
55			* @param {number=} i The index to read.
56			* @return {number}
57			* @private
58			*/
59			read16F_(bytes, i=0) {
60			return unpack(bytes, i, 5, 11);
61			}
62
63			/**
64			* Read 1 32-bit float from bytes using a TypedArray.
65			* @param {!Uint8Array\|!Array<number>} bytes An array of bytes.
66			* @param {number=} i The index to read.
67			* @return {number}
68			* @private
69			*/
70			read32F_(bytes, i=0) {
71			//this.ui32_[0] = super.unpack(bytes, i);
72			//return this.f32_[0];
73			return unpack(bytes, i, 8, 23);
74			}
75
76			/**
77			* Read 1 64-bit float from bytes using a TypedArray.
78			* Thanks https://gist.github.com/kg/2192799
79			* @param {!Uint8Array\|!Array<number>} bytes An array of bytes.
80			* @param {number=} i The index to read.
81			* @return {number}
82			* @private
83			*/
84			read64F_(bytes, i=0) {
85			//this.ui32_[this.HIGH_] = super.unpack(bytes, i);
86			//this.ui32_[this.LOW_] = super.unpack(bytes, i + 4);
87			//return this.f64_[0];
88			return unpack(bytes, i, 11, 52);
89			}
90
91			/**
92			* Write one 16-bit float as a binary value.
93			* @param {!Uint8Array\|!Array<number>} bytes An array of bytes.
94			* @param {number} num The number to write as bytes.
95			* @param {number=} j The index being written in the byte buffer.
96			* @return {number} The next index to write on the byte buffer.
97			* @private
98			*/
99			write16F_(bytes, num, j=0) {
100			return pack(bytes, j, num, 5, 11);
101			}
102
103			/**
104			* Write one 32-bit float as a binary value using a TypedArray.
105			* @param {!Uint8Array\|!Array<number>} bytes An array of bytes.
106			* @param {number} num The number to write as bytes.
107			* @param {number=} j The index being written in the byte buffer.
108			* @return {number} The next index to write on the byte buffer.
109			* @private
110			*/
111			write32F_(bytes, num, j=0) {
112			//if (num !== num) {
113			return pack(bytes, j, num, 8, 23);
114			//}
115			//this.f32_[0] = num;
116			//return super.pack(bytes, this.ui32_[0], j);
117			}
118
119			/**
120			* Write one 64-bit float as a binary value using a TypedArray.
121			* @param {!Uint8Array\|!Array<number>} bytes An array of bytes.
122			* @param {number} num The number to write as bytes.
123			* @param {number=} j The index being written in the byte buffer.
124			* @return {number} The next index to write on the byte buffer.
125			* @private
126			*/
127			write64F_(bytes, num, j=0) {
128			//if (num !== num) {
129			return pack(bytes, j, num, 11, 52);
130			//}
131			//this.f64_[0] = num;
132			//j = super.pack(bytes, this.ui32_[this.HIGH_], j);
133			//return super.pack(bytes, this.ui32_[this.LOW_], j);
134			}
135
136			/**
137			* Set the functions to pack and unpack numbers.
138			* @param {!Object} theType The type definition.
139			* @private
140			*/
141			setReaderAndWriter_(theType) {
142			if (theType.float) {
143			if (theType.bits == 16) {
144			this.unpack = this.read16F_;
145			this.pack = this.write16F_;
146			} else if(theType.bits == 32) {
147			this.unpack = this.read32F_;
148			this.pack = this.write32F_;
149			} else {
150			this.unpack = this.read64F_;
151			this.pack = this.write64F_;
152			}
153			} else {
154			this.unpack = super.unpack;
155			this.pack = super.pack;
156			}
157			}
158			}
159

rochars / byte-data

Push — master ( 5099d5...8faa65 )

lib/number-buffer.js A

Complexity

Size

Duplication

Importance

8 Functions

Duplication Side-by-Side

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