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The copyright and license notice is already in the LICENSE file. There is no justifiable reason to also require that it be included in every file, since the individual files are not individually distributed except as part of the entire package.
77 lines
2.3 KiB
JavaScript
77 lines
2.3 KiB
JavaScript
'use strict';
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var smalloc = process.binding('smalloc');
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var kMaxLength = smalloc.kMaxLength;
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var util = require('util');
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exports.alloc = alloc;
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exports.copyOnto = smalloc.copyOnto;
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exports.dispose = dispose;
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exports.hasExternalData = smalloc.hasExternalData;
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// don't allow kMaxLength to accidentally be overwritten. it's a lot less
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// apparent when a primitive is accidentally changed.
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Object.defineProperty(exports, 'kMaxLength', {
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enumerable: true, value: kMaxLength, writable: false
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});
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// enumerated values for different external array types
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var Types = {};
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// Must match enum v8::ExternalArrayType.
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Object.defineProperties(Types, {
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'Int8': { enumerable: true, value: 1, writable: false },
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'Uint8': { enumerable: true, value: 2, writable: false },
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'Int16': { enumerable: true, value: 3, writable: false },
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'Uint16': { enumerable: true, value: 4, writable: false },
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'Int32': { enumerable: true, value: 5, writable: false },
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'Uint32': { enumerable: true, value: 6, writable: false },
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'Float': { enumerable: true, value: 7, writable: false },
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'Double': { enumerable: true, value: 8, writable: false },
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'Uint8Clamped': { enumerable: true, value: 9, writable: false }
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});
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Object.defineProperty(exports, 'Types', {
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enumerable: true, value: Types, writable: false
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});
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// usage: obj = alloc(n[, obj][, type]);
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function alloc(n, obj, type) {
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n = n >>> 0;
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if (util.isUndefined(obj))
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obj = {};
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if (util.isNumber(obj)) {
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type = obj >>> 0;
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obj = {};
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} else if (util.isPrimitive(obj)) {
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throw new TypeError('obj must be an Object');
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}
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// 1 == v8::kExternalUint8Array, 9 == v8::kExternalUint8ClampedArray
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if (type < 1 || type > 9)
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throw new TypeError('unknown external array type: ' + type);
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if (util.isArray(obj))
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throw new TypeError('Arrays are not supported');
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if (n > kMaxLength)
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throw new RangeError('n > kMaxLength');
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return smalloc.alloc(obj, n, type);
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}
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function dispose(obj) {
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if (util.isPrimitive(obj))
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throw new TypeError('obj must be an Object');
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if (util.isBuffer(obj))
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throw new TypeError('obj cannot be a Buffer');
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if (smalloc.isTypedArray(obj))
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throw new TypeError('obj cannot be a typed array');
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if (!smalloc.hasExternalData(obj))
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throw new Error('obj has no external array data');
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smalloc.dispose(obj);
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}
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