204 lines
8.0 KiB
JavaScript
204 lines
8.0 KiB
JavaScript
"use strict";
|
|
/**
|
|
* When sending values to or receiving values from a [[Contract]], the
|
|
* data is generally encoded using the [ABI standard](link-solc-abi).
|
|
*
|
|
* The AbiCoder provides a utility to encode values to ABI data and
|
|
* decode values from ABI data.
|
|
*
|
|
* Most of the time, developers should favour the [[Contract]] class,
|
|
* which further abstracts a lot of the finer details of ABI data.
|
|
*
|
|
* @_section api/abi/abi-coder:ABI Encoding
|
|
*/
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.AbiCoder = void 0;
|
|
// See: https://github.com/ethereum/wiki/wiki/Ethereum-Contract-ABI
|
|
const index_js_1 = require("../utils/index.js");
|
|
const abstract_coder_js_1 = require("./coders/abstract-coder.js");
|
|
const address_js_1 = require("./coders/address.js");
|
|
const array_js_1 = require("./coders/array.js");
|
|
const boolean_js_1 = require("./coders/boolean.js");
|
|
const bytes_js_1 = require("./coders/bytes.js");
|
|
const fixed_bytes_js_1 = require("./coders/fixed-bytes.js");
|
|
const null_js_1 = require("./coders/null.js");
|
|
const number_js_1 = require("./coders/number.js");
|
|
const string_js_1 = require("./coders/string.js");
|
|
const tuple_js_1 = require("./coders/tuple.js");
|
|
const fragments_js_1 = require("./fragments.js");
|
|
const index_js_2 = require("../address/index.js");
|
|
const index_js_3 = require("../utils/index.js");
|
|
// https://docs.soliditylang.org/en/v0.8.17/control-structures.html
|
|
const PanicReasons = new Map();
|
|
PanicReasons.set(0x00, "GENERIC_PANIC");
|
|
PanicReasons.set(0x01, "ASSERT_FALSE");
|
|
PanicReasons.set(0x11, "OVERFLOW");
|
|
PanicReasons.set(0x12, "DIVIDE_BY_ZERO");
|
|
PanicReasons.set(0x21, "ENUM_RANGE_ERROR");
|
|
PanicReasons.set(0x22, "BAD_STORAGE_DATA");
|
|
PanicReasons.set(0x31, "STACK_UNDERFLOW");
|
|
PanicReasons.set(0x32, "ARRAY_RANGE_ERROR");
|
|
PanicReasons.set(0x41, "OUT_OF_MEMORY");
|
|
PanicReasons.set(0x51, "UNINITIALIZED_FUNCTION_CALL");
|
|
const paramTypeBytes = new RegExp(/^bytes([0-9]*)$/);
|
|
const paramTypeNumber = new RegExp(/^(u?int)([0-9]*)$/);
|
|
let defaultCoder = null;
|
|
function getBuiltinCallException(action, tx, data, abiCoder) {
|
|
let message = "missing revert data";
|
|
let reason = null;
|
|
const invocation = null;
|
|
let revert = null;
|
|
if (data) {
|
|
message = "execution reverted";
|
|
const bytes = (0, index_js_3.getBytes)(data);
|
|
data = (0, index_js_3.hexlify)(data);
|
|
if (bytes.length === 0) {
|
|
message += " (no data present; likely require(false) occurred";
|
|
reason = "require(false)";
|
|
}
|
|
else if (bytes.length % 32 !== 4) {
|
|
message += " (could not decode reason; invalid data length)";
|
|
}
|
|
else if ((0, index_js_3.hexlify)(bytes.slice(0, 4)) === "0x08c379a0") {
|
|
// Error(string)
|
|
try {
|
|
reason = abiCoder.decode(["string"], bytes.slice(4))[0];
|
|
revert = {
|
|
signature: "Error(string)",
|
|
name: "Error",
|
|
args: [reason]
|
|
};
|
|
message += `: ${JSON.stringify(reason)}`;
|
|
}
|
|
catch (error) {
|
|
message += " (could not decode reason; invalid string data)";
|
|
}
|
|
}
|
|
else if ((0, index_js_3.hexlify)(bytes.slice(0, 4)) === "0x4e487b71") {
|
|
// Panic(uint256)
|
|
try {
|
|
const code = Number(abiCoder.decode(["uint256"], bytes.slice(4))[0]);
|
|
revert = {
|
|
signature: "Panic(uint256)",
|
|
name: "Panic",
|
|
args: [code]
|
|
};
|
|
reason = `Panic due to ${PanicReasons.get(code) || "UNKNOWN"}(${code})`;
|
|
message += `: ${reason}`;
|
|
}
|
|
catch (error) {
|
|
message += " (could not decode panic code)";
|
|
}
|
|
}
|
|
else {
|
|
message += " (unknown custom error)";
|
|
}
|
|
}
|
|
const transaction = {
|
|
to: (tx.to ? (0, index_js_2.getAddress)(tx.to) : null),
|
|
data: (tx.data || "0x")
|
|
};
|
|
if (tx.from) {
|
|
transaction.from = (0, index_js_2.getAddress)(tx.from);
|
|
}
|
|
return (0, index_js_3.makeError)(message, "CALL_EXCEPTION", {
|
|
action, data, reason, transaction, invocation, revert
|
|
});
|
|
}
|
|
/**
|
|
* About AbiCoder
|
|
*/
|
|
class AbiCoder {
|
|
#getCoder(param) {
|
|
if (param.isArray()) {
|
|
return new array_js_1.ArrayCoder(this.#getCoder(param.arrayChildren), param.arrayLength, param.name);
|
|
}
|
|
if (param.isTuple()) {
|
|
return new tuple_js_1.TupleCoder(param.components.map((c) => this.#getCoder(c)), param.name);
|
|
}
|
|
switch (param.baseType) {
|
|
case "address":
|
|
return new address_js_1.AddressCoder(param.name);
|
|
case "bool":
|
|
return new boolean_js_1.BooleanCoder(param.name);
|
|
case "string":
|
|
return new string_js_1.StringCoder(param.name);
|
|
case "bytes":
|
|
return new bytes_js_1.BytesCoder(param.name);
|
|
case "":
|
|
return new null_js_1.NullCoder(param.name);
|
|
}
|
|
// u?int[0-9]*
|
|
let match = param.type.match(paramTypeNumber);
|
|
if (match) {
|
|
let size = parseInt(match[2] || "256");
|
|
(0, index_js_1.assertArgument)(size !== 0 && size <= 256 && (size % 8) === 0, "invalid " + match[1] + " bit length", "param", param);
|
|
return new number_js_1.NumberCoder(size / 8, (match[1] === "int"), param.name);
|
|
}
|
|
// bytes[0-9]+
|
|
match = param.type.match(paramTypeBytes);
|
|
if (match) {
|
|
let size = parseInt(match[1]);
|
|
(0, index_js_1.assertArgument)(size !== 0 && size <= 32, "invalid bytes length", "param", param);
|
|
return new fixed_bytes_js_1.FixedBytesCoder(size, param.name);
|
|
}
|
|
(0, index_js_1.assertArgument)(false, "invalid type", "type", param.type);
|
|
}
|
|
/**
|
|
* Get the default values for the given %%types%%.
|
|
*
|
|
* For example, a ``uint`` is by default ``0`` and ``bool``
|
|
* is by default ``false``.
|
|
*/
|
|
getDefaultValue(types) {
|
|
const coders = types.map((type) => this.#getCoder(fragments_js_1.ParamType.from(type)));
|
|
const coder = new tuple_js_1.TupleCoder(coders, "_");
|
|
return coder.defaultValue();
|
|
}
|
|
/**
|
|
* Encode the %%values%% as the %%types%% into ABI data.
|
|
*
|
|
* @returns DataHexstring
|
|
*/
|
|
encode(types, values) {
|
|
(0, index_js_1.assertArgumentCount)(values.length, types.length, "types/values length mismatch");
|
|
const coders = types.map((type) => this.#getCoder(fragments_js_1.ParamType.from(type)));
|
|
const coder = (new tuple_js_1.TupleCoder(coders, "_"));
|
|
const writer = new abstract_coder_js_1.Writer();
|
|
coder.encode(writer, values);
|
|
return writer.data;
|
|
}
|
|
/**
|
|
* Decode the ABI %%data%% as the %%types%% into values.
|
|
*
|
|
* If %%loose%% decoding is enabled, then strict padding is
|
|
* not enforced. Some older versions of Solidity incorrectly
|
|
* padded event data emitted from ``external`` functions.
|
|
*/
|
|
decode(types, data, loose) {
|
|
const coders = types.map((type) => this.#getCoder(fragments_js_1.ParamType.from(type)));
|
|
const coder = new tuple_js_1.TupleCoder(coders, "_");
|
|
return coder.decode(new abstract_coder_js_1.Reader(data, loose));
|
|
}
|
|
/**
|
|
* Returns the shared singleton instance of a default [[AbiCoder]].
|
|
*
|
|
* On the first call, the instance is created internally.
|
|
*/
|
|
static defaultAbiCoder() {
|
|
if (defaultCoder == null) {
|
|
defaultCoder = new AbiCoder();
|
|
}
|
|
return defaultCoder;
|
|
}
|
|
/**
|
|
* Returns an ethers-compatible [[CallExceptionError]] Error for the given
|
|
* result %%data%% for the [[CallExceptionAction]] %%action%% against
|
|
* the Transaction %%tx%%.
|
|
*/
|
|
static getBuiltinCallException(action, tx, data) {
|
|
return getBuiltinCallException(action, tx, data, AbiCoder.defaultAbiCoder());
|
|
}
|
|
}
|
|
exports.AbiCoder = AbiCoder;
|
|
//# sourceMappingURL=abi-coder.js.map
|