ethers.js/packages/providers/lib.esm/formatter.js

"use strict";
import { getAddress, getContractAddress } from "@ethersproject/address";
import { BigNumber } from "@ethersproject/bignumber";
import { hexDataLength, hexDataSlice, hexValue, hexZeroPad, isHexString } from "@ethersproject/bytes";
import { AddressZero } from "@ethersproject/constants";
import { shallowCopy } from "@ethersproject/properties";
import { parse as parseTransaction } from "@ethersproject/transactions";
import { Logger } from "@ethersproject/logger";
import { version } from "./_version";
const logger = new Logger(version);
export class Formatter {
    constructor() {
        logger.checkNew(new.target, Formatter);
        this.formats = this.getDefaultFormats();
    }
    getDefaultFormats() {
        const formats = ({});
        const address = this.address.bind(this);
        const bigNumber = this.bigNumber.bind(this);
        const blockTag = this.blockTag.bind(this);
        const data = this.data.bind(this);
        const hash = this.hash.bind(this);
        const hex = this.hex.bind(this);
        const number = this.number.bind(this);
        const strictData = (v) => { return this.data(v, true); };
        formats.transaction = {
            hash: hash,
            blockHash: Formatter.allowNull(hash, null),
            blockNumber: Formatter.allowNull(number, null),
            transactionIndex: Formatter.allowNull(number, null),
            confirmations: Formatter.allowNull(number, null),
            from: address,
            gasPrice: bigNumber,
            gasLimit: bigNumber,
            to: Formatter.allowNull(address, null),
            value: bigNumber,
            nonce: number,
            data: data,
            r: Formatter.allowNull(this.uint256),
            s: Formatter.allowNull(this.uint256),
            v: Formatter.allowNull(number),
            creates: Formatter.allowNull(address, null),
            raw: Formatter.allowNull(data),
        };
        formats.transactionRequest = {
            from: Formatter.allowNull(address),
            nonce: Formatter.allowNull(number),
            gasLimit: Formatter.allowNull(bigNumber),
            gasPrice: Formatter.allowNull(bigNumber),
            to: Formatter.allowNull(address),
            value: Formatter.allowNull(bigNumber),
            data: Formatter.allowNull(strictData),
        };
        formats.receiptLog = {
            transactionIndex: number,
            blockNumber: number,
            transactionHash: hash,
            address: address,
            topics: Formatter.arrayOf(hash),
            data: data,
            logIndex: number,
            blockHash: hash,
        };
        formats.receipt = {
            to: Formatter.allowNull(this.address, null),
            from: Formatter.allowNull(this.address, null),
            contractAddress: Formatter.allowNull(address, null),
            transactionIndex: number,
            root: Formatter.allowNull(hash),
            gasUsed: bigNumber,
            logsBloom: Formatter.allowNull(data),
            blockHash: hash,
            transactionHash: hash,
            logs: Formatter.arrayOf(this.receiptLog.bind(this)),
            blockNumber: number,
            confirmations: Formatter.allowNull(number, null),
            cumulativeGasUsed: bigNumber,
            status: Formatter.allowNull(number)
        };
        formats.block = {
            hash: hash,
            parentHash: hash,
            number: number,
            timestamp: number,
            nonce: Formatter.allowNull(hex),
            difficulty: this.difficulty.bind(this),
            gasLimit: bigNumber,
            gasUsed: bigNumber,
            miner: address,
            extraData: data,
            transactions: Formatter.allowNull(Formatter.arrayOf(hash)),
        };
        formats.blockWithTransactions = shallowCopy(formats.block);
        formats.blockWithTransactions.transactions = Formatter.allowNull(Formatter.arrayOf(this.transactionResponse.bind(this)));
        formats.filter = {
            fromBlock: Formatter.allowNull(blockTag, undefined),
            toBlock: Formatter.allowNull(blockTag, undefined),
            blockHash: Formatter.allowNull(hash, undefined),
            address: Formatter.allowNull(address, undefined),
            topics: Formatter.allowNull(this.topics.bind(this), undefined),
        };
        formats.filterLog = {
            blockNumber: Formatter.allowNull(number),
            blockHash: Formatter.allowNull(hash),
            transactionIndex: number,
            removed: Formatter.allowNull(this.boolean.bind(this)),
            address: address,
            data: Formatter.allowFalsish(data, "0x"),
            topics: Formatter.arrayOf(hash),
            transactionHash: hash,
            logIndex: number,
        };
        return formats;
    }
    // Requires a BigNumberish that is within the IEEE754 safe integer range; returns a number
    // Strict! Used on input.
    number(number) {
        return BigNumber.from(number).toNumber();
    }
    // Strict! Used on input.
    bigNumber(value) {
        return BigNumber.from(value);
    }
    // Requires a boolean, "true" or  "false"; returns a boolean
    boolean(value) {
        if (typeof (value) === "boolean") {
            return value;
        }
        if (typeof (value) === "string") {
            value = value.toLowerCase();
            if (value === "true") {
                return true;
            }
            if (value === "false") {
                return false;
            }
        }
        throw new Error("invalid boolean - " + value);
    }
    hex(value, strict) {
        if (typeof (value) === "string") {
            if (!strict && value.substring(0, 2) !== "0x") {
                value = "0x" + value;
            }
            if (isHexString(value)) {
                return value.toLowerCase();
            }
        }
        return logger.throwArgumentError("invalid hash", "value", value);
    }
    data(value, strict) {
        const result = this.hex(value, strict);
        if ((result.length % 2) !== 0) {
            throw new Error("invalid data; odd-length - " + value);
        }
        return result;
    }
    // Requires an address
    // Strict! Used on input.
    address(value) {
        return getAddress(value);
    }
    callAddress(value) {
        if (!isHexString(value, 32)) {
            return null;
        }
        const address = getAddress(hexDataSlice(value, 12));
        return (address === AddressZero) ? null : address;
    }
    contractAddress(value) {
        return getContractAddress(value);
    }
    // Strict! Used on input.
    blockTag(blockTag) {
        if (blockTag == null) {
            return "latest";
        }
        if (blockTag === "earliest") {
            return "0x0";
        }
        if (blockTag === "latest" || blockTag === "pending") {
            return blockTag;
        }
        if (typeof (blockTag) === "number" || isHexString(blockTag)) {
            return hexValue(blockTag);
        }
        throw new Error("invalid blockTag");
    }
    // Requires a hash, optionally requires 0x prefix; returns prefixed lowercase hash.
    hash(value, strict) {
        const result = this.hex(value, strict);
        if (hexDataLength(result) !== 32) {
            return logger.throwArgumentError("invalid hash", "value", value);
        }
        return result;
    }
    // Returns the difficulty as a number, or if too large (i.e. PoA network) null
    difficulty(value) {
        if (value == null) {
            return null;
        }
        const v = BigNumber.from(value);
        try {
            return v.toNumber();
        }
        catch (error) { }
        return null;
    }
    uint256(value) {
        if (!isHexString(value)) {
            throw new Error("invalid uint256");
        }
        return hexZeroPad(value, 32);
    }
    _block(value, format) {
        if (value.author != null && value.miner == null) {
            value.miner = value.author;
        }
        return Formatter.check(format, value);
    }
    block(value) {
        return this._block(value, this.formats.block);
    }
    blockWithTransactions(value) {
        return this._block(value, this.formats.blockWithTransactions);
    }
    // Strict! Used on input.
    transactionRequest(value) {
        return Formatter.check(this.formats.transactionRequest, value);
    }
    transactionResponse(transaction) {
        // Rename gas to gasLimit
        if (transaction.gas != null && transaction.gasLimit == null) {
            transaction.gasLimit = transaction.gas;
        }
        // Some clients (TestRPC) do strange things like return 0x0 for the
        // 0 address; correct this to be a real address
        if (transaction.to && BigNumber.from(transaction.to).isZero()) {
            transaction.to = "0x0000000000000000000000000000000000000000";
        }
        // Rename input to data
        if (transaction.input != null && transaction.data == null) {
            transaction.data = transaction.input;
        }
        // If to and creates are empty, populate the creates from the transaction
        if (transaction.to == null && transaction.creates == null) {
            transaction.creates = this.contractAddress(transaction);
        }
        // @TODO: use transaction.serialize? Have to add support for including v, r, and s...
        /*
        if (!transaction.raw) {
 
             // Very loose providers (e.g. TestRPC) do not provide a signature or raw
             if (transaction.v && transaction.r && transaction.s) {
                 let raw = [
                     stripZeros(hexlify(transaction.nonce)),
                     stripZeros(hexlify(transaction.gasPrice)),
                     stripZeros(hexlify(transaction.gasLimit)),
                     (transaction.to || "0x"),
                     stripZeros(hexlify(transaction.value || "0x")),
                     hexlify(transaction.data || "0x"),
                     stripZeros(hexlify(transaction.v || "0x")),
                     stripZeros(hexlify(transaction.r)),
                     stripZeros(hexlify(transaction.s)),
                 ];
 
                 transaction.raw = rlpEncode(raw);
             }
         }
         */
        const result = Formatter.check(this.formats.transaction, transaction);
        if (transaction.chainId != null) {
            let chainId = transaction.chainId;
            if (isHexString(chainId)) {
                chainId = BigNumber.from(chainId).toNumber();
            }
            result.chainId = chainId;
        }
        else {
            let chainId = transaction.networkId;
            // geth-etc returns chainId
            if (chainId == null && result.v == null) {
                chainId = transaction.chainId;
            }
            if (isHexString(chainId)) {
                chainId = BigNumber.from(chainId).toNumber();
            }
            if (typeof (chainId) !== "number" && result.v != null) {
                chainId = (result.v - 35) / 2;
                if (chainId < 0) {
                    chainId = 0;
                }
                chainId = parseInt(chainId);
            }
            if (typeof (chainId) !== "number") {
                chainId = 0;
            }
            result.chainId = chainId;
        }
        // 0x0000... should actually be null
        if (result.blockHash && result.blockHash.replace(/0/g, "") === "x") {
            result.blockHash = null;
        }
        return result;
    }
    transaction(value) {
        return parseTransaction(value);
    }
    receiptLog(value) {
        return Formatter.check(this.formats.receiptLog, value);
    }
    receipt(value) {
        const result = Formatter.check(this.formats.receipt, value);
        if (value.status != null) {
            result.byzantium = true;
        }
        return result;
    }
    topics(value) {
        if (Array.isArray(value)) {
            return value.map((v) => this.topics(v));
        }
        else if (value != null) {
            return this.hash(value, true);
        }
        return null;
    }
    filter(value) {
        return Formatter.check(this.formats.filter, value);
    }
    filterLog(value) {
        return Formatter.check(this.formats.filterLog, value);
    }
    static check(format, object) {
        const result = {};
        for (const key in format) {
            try {
                const value = format[key](object[key]);
                if (value !== undefined) {
                    result[key] = value;
                }
            }
            catch (error) {
                error.checkKey = key;
                error.checkValue = object[key];
                throw error;
            }
        }
        return result;
    }
    // if value is null-ish, nullValue is returned
    static allowNull(format, nullValue) {
        return (function (value) {
            if (value == null) {
                return nullValue;
            }
            return format(value);
        });
    }
    // If value is false-ish, replaceValue is returned
    static allowFalsish(format, replaceValue) {
        return (function (value) {
            if (!value) {
                return replaceValue;
            }
            return format(value);
        });
    }
    // Requires an Array satisfying check
    static arrayOf(format) {
        return (function (array) {
            if (!Array.isArray(array)) {
                throw new Error("not an array");
            }
            const result = [];
            array.forEach(function (value) {
                result.push(format(value));
            });
            return result;
        });
    }
}
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