92 lines
3.1 KiB
JavaScript
92 lines
3.1 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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var bignumber_1 = require("@ethersproject/bignumber");
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var bytes_1 = require("@ethersproject/bytes");
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var keccak256_1 = require("@ethersproject/keccak256");
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var sha2_1 = require("@ethersproject/sha2");
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var strings_1 = require("@ethersproject/strings");
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var regexBytes = new RegExp("^bytes([0-9]+)$");
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var regexNumber = new RegExp("^(u?int)([0-9]*)$");
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var regexArray = new RegExp("^(.*)\\[([0-9]*)\\]$");
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var Zeros = "0000000000000000000000000000000000000000000000000000000000000000";
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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 bytes_1.zeroPad(value, 32);
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}
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return bytes_1.arrayify(value);
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case "string":
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return strings_1.toUtf8Bytes(value);
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case "bytes":
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return bytes_1.arrayify(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 bytes_1.zeroPad(value, 32);
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}
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return bytes_1.arrayify(value);
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}
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var match = type.match(regexNumber);
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if (match) {
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//let signed = (match[1] === "int")
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var size = parseInt(match[2] || "256");
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if ((size % 8 != 0) || size === 0 || size > 256) {
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throw new Error("invalid number 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 = bignumber_1.BigNumber.from(value).toTwos(size);
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return bytes_1.zeroPad(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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var size = parseInt(match[1]);
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if (String(size) != match[1] || size === 0 || size > 32) {
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throw new Error("invalid number type - " + type);
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}
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if (bytes_1.arrayify(value).byteLength !== size) {
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throw new Error("invalid value for " + type);
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}
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if (isArray) {
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return bytes_1.arrayify((value + Zeros).substring(0, 66));
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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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var baseType_1 = match[1];
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var count = parseInt(match[2] || String(value.length));
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if (count != value.length) {
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throw new Error("invalid value for " + type);
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}
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var result_1 = [];
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value.forEach(function (value) {
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result_1.push(_pack(baseType_1, value, true));
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});
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return bytes_1.concat(result_1);
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}
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throw new Error("unknown type - " + type);
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}
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// @TODO: Array Enum
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function pack(types, values) {
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if (types.length != values.length) {
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throw new Error("type/value count mismatch");
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}
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var 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 bytes_1.hexlify(bytes_1.concat(tight));
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}
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exports.pack = pack;
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function keccak256(types, values) {
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return keccak256_1.keccak256(pack(types, values));
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}
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exports.keccak256 = keccak256;
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function sha256(types, values) {
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return sha2_1.sha256(pack(types, values));
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}
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exports.sha256 = sha256;
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