ethers.js/lib.esm/hash/solidity.js

import { getAddress } from "../address/index.js";
import { keccak256 as _keccak256, sha256 as _sha256 } from "../crypto/index.js";
import { concat, dataLength, getBytes, hexlify, toBeArray, toTwos, toUtf8Bytes, zeroPadBytes, zeroPadValue, assertArgument } from "../utils/index.js";
const regexBytes = new RegExp("^bytes([0-9]+)$");
const regexNumber = new RegExp("^(u?int)([0-9]*)$");
const regexArray = new RegExp("^(.*)\\[([0-9]*)\\]$");
function _pack(type, value, isArray) {
    switch (type) {
        case "address":
            if (isArray) {
                return getBytes(zeroPadValue(value, 32));
            }
            return getBytes(getAddress(value));
        case "string":
            return toUtf8Bytes(value);
        case "bytes":
            return getBytes(value);
        case "bool":
            value = (!!value ? "0x01" : "0x00");
            if (isArray) {
                return getBytes(zeroPadValue(value, 32));
            }
            return getBytes(value);
    }
    let match = type.match(regexNumber);
    if (match) {
        let signed = (match[1] === "int");
        let size = parseInt(match[2] || "256");
        assertArgument((!match[2] || match[2] === String(size)) && (size % 8 === 0) && size !== 0 && size <= 256, "invalid number type", "type", type);
        if (isArray) {
            size = 256;
        }
        if (signed) {
            value = toTwos(value, size);
        }
        return getBytes(zeroPadValue(toBeArray(value), size / 8));
    }
    match = type.match(regexBytes);
    if (match) {
        const size = parseInt(match[1]);
        assertArgument(String(size) === match[1] && size !== 0 && size <= 32, "invalid bytes type", "type", type);
        assertArgument(dataLength(value) === size, `invalid value for ${type}`, "value", value);
        if (isArray) {
            return getBytes(zeroPadBytes(value, 32));
        }
        return value;
    }
    match = type.match(regexArray);
    if (match && Array.isArray(value)) {
        const baseType = match[1];
        const count = parseInt(match[2] || String(value.length));
        assertArgument(count === value.length, `invalid array length for ${type}`, "value", value);
        const result = [];
        value.forEach(function (value) {
            result.push(_pack(baseType, value, true));
        });
        return getBytes(concat(result));
    }
    assertArgument(false, "invalid type", "type", type);
}
// @TODO: Array Enum
/**
 *   Computes the [[link-solc-packed]] representation of %%values%%
 *   respectively to their %%types%%.
 *
 *   @example:
 *       addr = "0x8ba1f109551bd432803012645ac136ddd64dba72"
 *       solidityPacked([ "address", "uint" ], [ addr, 45 ]);
 *       //_result:
 */
export function solidityPacked(types, values) {
    assertArgument(types.length === values.length, "wrong number of values; expected ${ types.length }", "values", values);
    const tight = [];
    types.forEach(function (type, index) {
        tight.push(_pack(type, values[index]));
    });
    return hexlify(concat(tight));
}
/**
 *   Computes the [[link-solc-packed]] [[keccak256]] hash of %%values%%
 *   respectively to their %%types%%.
 *
 *   @example:
 *       addr = "0x8ba1f109551bd432803012645ac136ddd64dba72"
 *       solidityPackedKeccak256([ "address", "uint" ], [ addr, 45 ]);
 *       //_result:
 */
export function solidityPackedKeccak256(types, values) {
    return _keccak256(solidityPacked(types, values));
}
/**
 *   Computes the [[link-solc-packed]] [[sha256]] hash of %%values%%
 *   respectively to their %%types%%.
 *
 *   @example:
 *       addr = "0x8ba1f109551bd432803012645ac136ddd64dba72"
 *       solidityPackedSha256([ "address", "uint" ], [ addr, 45 ]);
 *       //_result:
 */
export function solidityPackedSha256(types, values) {
    return _sha256(solidityPacked(types, values));
}
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