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Текущая директория: /opt/BitGoJS/node_modules/@cosmjs/stargate/build
Просмотр файла: fee.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.calculateFee = exports.GasPrice = void 0;
const math_1 = require("@cosmjs/math");
const proto_signing_1 = require("@cosmjs/proto-signing");
/**
* Denom checker for the Cosmos SDK 0.42 denom pattern
* (https://github.com/cosmos/cosmos-sdk/blob/v0.42.4/types/coin.go#L599-L601).
*
* This is like a regexp but with helpful error messages.
*/
function checkDenom(denom) {
if (denom.length < 3 || denom.length > 128) {
throw new Error("Denom must be between 3 and 128 characters");
}
}
/**
* A gas price, i.e. the price of a single unit of gas. This is typically a fraction of
* the smallest fee token unit, such as 0.012utoken.
*/
class GasPrice {
constructor(amount, denom) {
this.amount = amount;
this.denom = denom;
}
/**
* Parses a gas price formatted as `<amount><denom>`, e.g. `GasPrice.fromString("0.012utoken")`.
*
* The denom must match the Cosmos SDK 0.42 pattern (https://github.com/cosmos/cosmos-sdk/blob/v0.42.4/types/coin.go#L599-L601).
* See `GasPrice` in @cosmjs/stargate for a more generic matcher.
*
* Separators are not yet supported.
*/
static fromString(gasPrice) {
// Use Decimal.fromUserInput and checkDenom for detailed checks and helpful error messages
const matchResult = gasPrice.match(/^([0-9.]+)([a-z][a-z0-9]*)$/i);
if (!matchResult) {
throw new Error("Invalid gas price string");
}
const [_, amount, denom] = matchResult;
checkDenom(denom);
const fractionalDigits = 18;
const decimalAmount = math_1.Decimal.fromUserInput(amount, fractionalDigits);
return new GasPrice(decimalAmount, denom);
}
/**
* Returns a string representation of this gas price, e.g. "0.025uatom".
* This can be used as an input to `GasPrice.fromString`.
*/
toString() {
return this.amount.toString() + this.denom;
}
}
exports.GasPrice = GasPrice;
function calculateFee(gasLimit, gasPrice) {
const processedGasPrice = typeof gasPrice === "string" ? GasPrice.fromString(gasPrice) : gasPrice;
const { denom, amount: gasPriceAmount } = processedGasPrice;
// Note: Amount can exceed the safe integer range (https://github.com/cosmos/cosmjs/issues/1134),
// which we handle by converting from Decimal to string without going through number.
const amount = gasPriceAmount.multiply(new math_1.Uint53(gasLimit)).ceil().toString();
return {
amount: (0, proto_signing_1.coins)(amount, denom),
gas: gasLimit.toString(),
};
}
exports.calculateFee = calculateFee;
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