ipfs storage for images and other nontext items. for use with etica - runs on etica network and currencys
https://collect.etica-stats.org
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45 lines
1.6 KiB
45 lines
1.6 KiB
import { defineProperties, fromTwos, getBigInt, mask, toTwos } from "../../utils/index.js"; |
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import { Typed } from "../typed.js"; |
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import { Coder, WordSize } from "./abstract-coder.js"; |
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const BN_0 = BigInt(0); |
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const BN_1 = BigInt(1); |
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const BN_MAX_UINT256 = BigInt("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); |
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/** |
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* @_ignore |
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*/ |
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export class NumberCoder extends Coder { |
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size; |
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signed; |
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constructor(size, signed, localName) { |
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const name = ((signed ? "int" : "uint") + (size * 8)); |
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super(name, name, localName, false); |
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defineProperties(this, { size, signed }, { size: "number", signed: "boolean" }); |
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} |
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defaultValue() { |
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return 0; |
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} |
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encode(writer, _value) { |
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let value = getBigInt(Typed.dereference(_value, this.type)); |
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// Check bounds are safe for encoding |
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let maxUintValue = mask(BN_MAX_UINT256, WordSize * 8); |
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if (this.signed) { |
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let bounds = mask(maxUintValue, (this.size * 8) - 1); |
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if (value > bounds || value < -(bounds + BN_1)) { |
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this._throwError("value out-of-bounds", _value); |
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} |
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value = toTwos(value, 8 * WordSize); |
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} |
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else if (value < BN_0 || value > mask(maxUintValue, this.size * 8)) { |
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this._throwError("value out-of-bounds", _value); |
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} |
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return writer.writeValue(value); |
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} |
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decode(reader) { |
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let value = mask(reader.readValue(), this.size * 8); |
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if (this.signed) { |
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value = fromTwos(value, this.size * 8); |
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} |
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return value; |
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} |
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} |
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//# sourceMappingURL=number.js.map
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