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Updated RLP package to use Logger instead of bare errors.

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This commit is contained in:
Richard Moore 2020-03-17 13:58:49 -04:00
parent 72c89922a4
commit 390497f389
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GPG Key ID: 665176BE8E9DC651
1 changed files with 16 additions and 10 deletions
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26
packages/rlp/src.ts/index.ts
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@ -4,6 +4,10 @@
import { arrayify, BytesLike, hexlify, isBytesLike } from "@ethersproject/bytes";
import { Logger } from "@ethersproject/logger";
import { version } from "./_version";
const logger = new Logger(version);
function arrayifyInteger(value: number): Array<number> {
const result = [];
while (value) {
@ -41,7 +45,7 @@ function _encode(object: Array<any> | string): Array<number> {
}
if (!isBytesLike(object)) {
throw new Error("RLP object must be BytesLike");
logger.throwArgumentError("RLP object must be BytesLike", "object", object);
}
const data: Array<number> = Array.prototype.slice.call(arrayify(object));
@ -79,7 +83,7 @@ function _decodeChildren(data: Uint8Array, offset: number, childOffset: number,
childOffset += decoded.consumed;
if (childOffset > offset + 1 + length) {
throw new Error("invalid rlp");
logger.throwError("child data too short", Logger.errors.BUFFER_OVERRUN, { });
}
}
@ -88,18 +92,20 @@ function _decodeChildren(data: Uint8Array, offset: number, childOffset: number,
// returns { consumed: number, result: Object }
function _decode(data: Uint8Array, offset: number): { consumed: number, result: any } {
if (data.length === 0) { throw new Error("invalid rlp data"); }
if (data.length === 0) {
logger.throwError("data too short", Logger.errors.BUFFER_OVERRUN, { });
}
// Array with extra length prefix
if (data[offset] >= 0xf8) {
const lengthLength = data[offset] - 0xf7;
if (offset + 1 + lengthLength > data.length) {
throw new Error("too short");
logger.throwError("data short segment too short", Logger.errors.BUFFER_OVERRUN, { });
}
const length = unarrayifyInteger(data, offset + 1, lengthLength);
if (offset + 1 + lengthLength + length > data.length) {
throw new Error("to short");
logger.throwError("data long segment too short", Logger.errors.BUFFER_OVERRUN, { });
}
return _decodeChildren(data, offset, offset + 1 + lengthLength, lengthLength + length);
@ -107,7 +113,7 @@ function _decode(data: Uint8Array, offset: number): { consumed: number, result:
} else if (data[offset] >= 0xc0) {
const length = data[offset] - 0xc0;
if (offset + 1 + length > data.length) {
throw new Error("invalid rlp data");
logger.throwError("data array too short", Logger.errors.BUFFER_OVERRUN, { });
}
return _decodeChildren(data, offset, offset + 1, length);
@ -115,12 +121,12 @@ function _decode(data: Uint8Array, offset: number): { consumed: number, result:
} else if (data[offset] >= 0xb8) {
const lengthLength = data[offset] - 0xb7;
if (offset + 1 + lengthLength > data.length) {
throw new Error("invalid rlp data");
logger.throwError("data array too short", Logger.errors.BUFFER_OVERRUN, { });
}
const length = unarrayifyInteger(data, offset + 1, lengthLength);
if (offset + 1 + lengthLength + length > data.length) {
throw new Error("invalid rlp data");
logger.throwError("data array too short", Logger.errors.BUFFER_OVERRUN, { });
}
const result = hexlify(data.slice(offset + 1 + lengthLength, offset + 1 + lengthLength + length));
@ -129,7 +135,7 @@ function _decode(data: Uint8Array, offset: number): { consumed: number, result:
} else if (data[offset] >= 0x80) {
const length = data[offset] - 0x80;
if (offset + 1 + length > data.length) {
throw new Error("invalid rlp data");
logger.throwError("data too short", Logger.errors.BUFFER_OVERRUN, { });
}
const result = hexlify(data.slice(offset + 1, offset + 1 + length));
@ -142,7 +148,7 @@ export function decode(data: BytesLike): any {
const bytes = arrayify(data);
const decoded = _decode(bytes, 0);
if (decoded.consumed !== bytes.length) {
throw new Error("invalid rlp data");
logger.throwArgumentError("invalid rlp data", "data", data);
}
return decoded.result;
}