85 lines
3.2 KiB
JavaScript
85 lines
3.2 KiB
JavaScript
import { concat, dataLength, hexlify, zeroPadBytes, zeroPadValue } from "@ethersproject/bytes";
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import { keccak256 as _keccak256, sha256 as _sha256 } from "@ethersproject/crypto";
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import { toArray, toTwos } from "@ethersproject/math";
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import { toUtf8Bytes } from "@ethersproject/strings";
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import { logger } from "./logger.js";
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const regexBytes = new RegExp("^bytes([0-9]+)$");
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const regexNumber = new RegExp("^(u?int)([0-9]*)$");
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const regexArray = new RegExp("^(.*)\\[([0-9]*)\\]$");
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function _pack(type, value, isArray) {
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switch (type) {
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case "address":
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if (isArray) {
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return logger.getBytes(zeroPadValue(value, 32));
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}
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return logger.getBytes(value);
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case "string":
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return toUtf8Bytes(value);
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case "bytes":
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return logger.getBytes(value);
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case "bool":
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value = (!!value ? "0x01" : "0x00");
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if (isArray) {
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return logger.getBytes(zeroPadValue(value, 32));
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}
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return logger.getBytes(value);
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}
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let match = type.match(regexNumber);
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if (match) {
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let size = parseInt(match[2] || "256");
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if ((match[2] && String(size) !== match[2]) || (size % 8 !== 0) || size === 0 || size > 256) {
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return logger.throwArgumentError("invalid number type", "type", type);
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}
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if (isArray) {
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size = 256;
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}
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value = toTwos(value, size);
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return logger.getBytes(zeroPadValue(toArray(value), size / 8));
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}
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match = type.match(regexBytes);
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if (match) {
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const size = parseInt(match[1]);
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if (String(size) !== match[1] || size === 0 || size > 32) {
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return logger.throwArgumentError("invalid bytes type", "type", type);
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}
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if (dataLength(value) !== size) {
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return logger.throwArgumentError(`invalid value for ${type}`, "value", value);
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}
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if (isArray) {
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return logger.getBytes(zeroPadBytes(value, 32));
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}
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return value;
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}
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match = type.match(regexArray);
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if (match && Array.isArray(value)) {
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const baseType = match[1];
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const count = parseInt(match[2] || String(value.length));
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if (count != value.length) {
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logger.throwArgumentError(`invalid array length for ${type}`, "value", value);
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}
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const result = [];
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value.forEach(function (value) {
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result.push(_pack(baseType, value, true));
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});
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return logger.getBytes(concat(result));
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}
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return logger.throwArgumentError("invalid type", "type", type);
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}
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// @TODO: Array Enum
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export function solidityPacked(types, values) {
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if (types.length != values.length) {
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logger.throwArgumentError("wrong number of values; expected ${ types.length }", "values", values);
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}
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const tight = [];
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types.forEach(function (type, index) {
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tight.push(_pack(type, values[index]));
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});
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return hexlify(concat(tight));
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}
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export function solidityPackedKeccak256(types, values) {
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return _keccak256(solidityPacked(types, values));
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}
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export function solidityPackedSha256(types, values) {
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return _sha256(solidityPacked(types, values));
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}
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//# sourceMappingURL=solidity.js.map
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