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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,151 @@ | ||
| /** | ||
| * Copyright (C) 2022-2024 Permanent Data Solutions, Inc. All Rights Reserved. | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Affero General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Affero General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| import { MIO_PER_IO } from './constants.js'; | ||
|
|
||
| interface Equatable<T> { | ||
| equals(other: T): boolean; | ||
| } | ||
|
|
||
| class PositiveFiniteInteger implements Equatable<PositiveFiniteInteger> { | ||
| constructor(private readonly positiveFiniteInteger: number) { | ||
| if ( | ||
| !Number.isFinite(this.positiveFiniteInteger) || | ||
| !Number.isInteger(this.positiveFiniteInteger) || | ||
| this.positiveFiniteInteger < 0 | ||
| ) { | ||
| throw new Error( | ||
| `Number must be a non-negative integer value! ${positiveFiniteInteger}`, | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| [Symbol.toPrimitive](hint?: string): number | string { | ||
| if (hint === 'string') { | ||
| this.toString(); | ||
| } | ||
|
|
||
| return this.positiveFiniteInteger; | ||
| } | ||
|
|
||
| plus(positiveFiniteInteger: PositiveFiniteInteger): PositiveFiniteInteger { | ||
| return new PositiveFiniteInteger( | ||
| this.positiveFiniteInteger + positiveFiniteInteger.positiveFiniteInteger, | ||
| ); | ||
| } | ||
|
|
||
| minus(positiveFiniteInteger: PositiveFiniteInteger): PositiveFiniteInteger { | ||
| return new PositiveFiniteInteger( | ||
| this.positiveFiniteInteger - positiveFiniteInteger.positiveFiniteInteger, | ||
| ); | ||
| } | ||
|
|
||
| isGreaterThan(positiveFiniteInteger: PositiveFiniteInteger): boolean { | ||
| return ( | ||
| this.positiveFiniteInteger > positiveFiniteInteger.positiveFiniteInteger | ||
| ); | ||
| } | ||
|
|
||
| isGreaterThanOrEqualTo( | ||
| positiveFiniteInteger: PositiveFiniteInteger, | ||
| ): boolean { | ||
| return ( | ||
| this.positiveFiniteInteger >= positiveFiniteInteger.positiveFiniteInteger | ||
| ); | ||
| } | ||
|
|
||
| isLessThan(positiveFiniteInteger: PositiveFiniteInteger): boolean { | ||
| return ( | ||
| this.positiveFiniteInteger < positiveFiniteInteger.positiveFiniteInteger | ||
| ); | ||
| } | ||
|
|
||
| isLessThanOrEqualTo(positiveFiniteInteger: PositiveFiniteInteger): boolean { | ||
| return ( | ||
| this.positiveFiniteInteger <= positiveFiniteInteger.positiveFiniteInteger | ||
| ); | ||
| } | ||
|
|
||
| toString(): string { | ||
| return `${this.positiveFiniteInteger}`; | ||
| } | ||
|
|
||
| valueOf(): number { | ||
| return this.positiveFiniteInteger; | ||
| } | ||
|
|
||
| toJSON(): number { | ||
| return this.positiveFiniteInteger; | ||
| } | ||
|
|
||
| equals(other: PositiveFiniteInteger): boolean { | ||
| return this.positiveFiniteInteger === other.positiveFiniteInteger; | ||
| } | ||
| } | ||
|
|
||
| export class IOToken { | ||
| protected value: number; | ||
| constructor(value: number) { | ||
| if (!Number.isFinite(value) || value < 0) { | ||
| throw new Error('IOToken must be a non-negative finite number'); | ||
| } | ||
| this.value = +value.toFixed(6); | ||
| } | ||
|
|
||
| valueOf(): number { | ||
| return this.value; | ||
| } | ||
|
|
||
| toMIO(): mIOToken { | ||
| return new mIOToken(Math.floor(this.value * MIO_PER_IO)); | ||
| } | ||
| } | ||
|
|
||
| export class mIOToken extends PositiveFiniteInteger { | ||
| constructor(value: number) { | ||
| super(value); | ||
| } | ||
|
|
||
| multiply(multiplier: mIOToken | number): mIOToken { | ||
| // always round down on multiplication and division | ||
| const result = Math.floor(this.valueOf() * multiplier.valueOf()); | ||
| return new mIOToken(result); | ||
| } | ||
|
|
||
| divide(divisor: mIOToken | number): mIOToken { | ||
| if (divisor.valueOf() === 0) { | ||
| // TODO: how should we handle this | ||
| throw new Error('Cannot divide by zero'); | ||
| } | ||
| // always round down on multiplication and division | ||
| const result = Math.floor(this.valueOf() / divisor.valueOf()); | ||
| return new mIOToken(result); | ||
| } | ||
|
|
||
| plus(addend: mIOToken): mIOToken { | ||
| const result = super.plus(addend); | ||
| return new mIOToken(result.valueOf()); | ||
| } | ||
|
|
||
| minus(subtractHend: mIOToken): mIOToken { | ||
| const result = super.minus(subtractHend); | ||
| return new mIOToken(result.valueOf()); | ||
| } | ||
|
|
||
| toIO(): IOToken { | ||
| return new IOToken(this.valueOf() / MIO_PER_IO); | ||
| } | ||
| } |
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