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Merge pull request #92 from hyperweb-io/cosmos-sdk-dec
apply useCosmosSDKDec and useEnhancedDecimal
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| /** | ||
| * This file and any referenced files were automatically generated by @cosmology/[email protected] | ||
| * DO NOT MODIFY BY HAND. Instead, download the latest proto files for your chain | ||
| * and run the transpile command or npm scripts command that is used to regenerate this bundle. | ||
| */ | ||
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| // The largest value we need is 18 (Ether). | ||
| const maxFractionalDigits = 30; | ||
| /** | ||
| * A type for arbitrary precision, non-negative decimals. | ||
| * | ||
| * Instances of this class are immutable. | ||
| */ | ||
| export class Decimal { | ||
| public static fromUserInput( | ||
| input: string, | ||
| fractionalDigits: number | ||
| ): Decimal { | ||
| Decimal.verifyFractionalDigits(fractionalDigits); | ||
| const badCharacter = input.match(/[^0-9.]/); | ||
| if (badCharacter) { | ||
| // eslint-disable-next-line @typescript-eslint/no-non-null-assertion | ||
| throw new Error( | ||
| `Invalid character at position ${badCharacter.index! + 1}` | ||
| ); | ||
| } | ||
| let whole: string; | ||
| let fractional: string; | ||
| if (input === "") { | ||
| whole = "0"; | ||
| fractional = ""; | ||
| } else if (input.search(/\./) === -1) { | ||
| // integer format, no separator | ||
| whole = input; | ||
| fractional = ""; | ||
| } else { | ||
| const parts = input.split("."); | ||
| switch (parts.length) { | ||
| case 0: | ||
| case 1: | ||
| throw new Error( | ||
| "Fewer than two elements in split result. This must not happen here." | ||
| ); | ||
| case 2: | ||
| if (!parts[1]) throw new Error("Fractional part missing"); | ||
| whole = parts[0]; | ||
| fractional = parts[1].replace(/0+$/, ""); | ||
| break; | ||
| default: | ||
| throw new Error("More than one separator found"); | ||
| } | ||
| } | ||
| if (fractional.length > fractionalDigits) { | ||
| throw new Error("Got more fractional digits than supported"); | ||
| } | ||
| const quantity = `${whole}${fractional.padEnd(fractionalDigits, "0")}`; | ||
| return new Decimal(quantity, fractionalDigits); | ||
| } | ||
| public static fromAtomics( | ||
| atomics: string, | ||
| fractionalDigits: number | ||
| ): Decimal { | ||
| Decimal.verifyFractionalDigits(fractionalDigits); | ||
| return new Decimal(atomics, fractionalDigits); | ||
| } | ||
| private static verifyFractionalDigits(fractionalDigits: number): void { | ||
| if (!Number.isInteger(fractionalDigits)) | ||
| throw new Error("Fractional digits is not an integer"); | ||
| if (fractionalDigits < 0) | ||
| throw new Error("Fractional digits must not be negative"); | ||
| if (fractionalDigits > maxFractionalDigits) { | ||
| throw new Error( | ||
| `Fractional digits must not exceed ${maxFractionalDigits}` | ||
| ); | ||
| } | ||
| } | ||
| public get atomics(): string { | ||
| return this.data.atomics.toString(); | ||
| } | ||
| public get fractionalDigits(): number { | ||
| return this.data.fractionalDigits; | ||
| } | ||
| private readonly data: { | ||
| readonly atomics: bigint; | ||
| readonly fractionalDigits: number; | ||
| }; | ||
| private constructor(atomics: string, fractionalDigits: number) { | ||
| if (!atomics.match(/^[0-9]+$/)) { | ||
| throw new Error( | ||
| "Invalid string format. Only non-negative integers in decimal representation supported." | ||
| ); | ||
| } | ||
| this.data = { | ||
| atomics: BigInt(atomics), | ||
| fractionalDigits: fractionalDigits, | ||
| }; | ||
| } | ||
| public toString(): string { | ||
| const factor = BigInt(10) ** BigInt(this.data.fractionalDigits); | ||
| const whole = this.data.atomics / factor; | ||
| const fractional = this.data.atomics % factor; | ||
| if (fractional === 0n) { | ||
| return whole.toString(); | ||
| } else { | ||
| const fullFractionalPart = fractional | ||
| .toString() | ||
| .padStart(this.data.fractionalDigits, "0"); | ||
| const trimmedFractionalPart = fullFractionalPart.replace(/0+$/, ""); | ||
| return `${whole.toString()}.${trimmedFractionalPart}`; | ||
| } | ||
| } | ||
| } |
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