From 7ae38906926dc09bc10670c361af0d2bf0050426 Mon Sep 17 00:00:00 2001
From: Hsuan Lee <hsuan@cobinhood.com>
Date: Sat, 19 Jan 2019 18:42:04 +0800
Subject: Update dependency packages

---
 .../collision_resistant_abi_decoder.ts             | 54 ----------------------
 1 file changed, 54 deletions(-)
 delete mode 100644 packages/order-watcher/src/order_watcher/collision_resistant_abi_decoder.ts

(limited to 'packages/order-watcher/src/order_watcher/collision_resistant_abi_decoder.ts')

diff --git a/packages/order-watcher/src/order_watcher/collision_resistant_abi_decoder.ts b/packages/order-watcher/src/order_watcher/collision_resistant_abi_decoder.ts
deleted file mode 100644
index 2ea796947..000000000
--- a/packages/order-watcher/src/order_watcher/collision_resistant_abi_decoder.ts
+++ /dev/null
@@ -1,54 +0,0 @@
-import { AbiDecoder } from '@0x/utils';
-import { ContractAbi, DecodedLogArgs, LogEntry, LogWithDecodedArgs, RawLog } from 'ethereum-types';
-
-const TOKEN_TYPE_COLLISION = `Token can't be marked as ERC20 and ERC721 at the same time`;
-
-/**
- * ERC20 and ERC721 have some events with different args but colliding signature.
- * For exmaple:
- * Transfer(_from address, _to address, _value uint256)
- * Transfer(_from address, _to address, _tokenId uint256)
- * Both have the signature:
- * Transfer(address,address,uint256)
- *
- * In order to correctly decode those events we need to know the token type by address in advance.
- * You can pass it by calling `this.addERC20Token(address)` or `this.addERC721Token(address)`
- */
-export class CollisionResistanceAbiDecoder {
-    private readonly _erc20AbiDecoder: AbiDecoder;
-    private readonly _erc721AbiDecoder: AbiDecoder;
-    private readonly _restAbiDecoder: AbiDecoder;
-    private readonly _knownERC20Tokens = new Set();
-    private readonly _knownERC721Tokens = new Set();
-    constructor(erc20Abi: ContractAbi, erc721Abi: ContractAbi, abis: ContractAbi[]) {
-        this._erc20AbiDecoder = new AbiDecoder([erc20Abi]);
-        this._erc721AbiDecoder = new AbiDecoder([erc721Abi]);
-        this._restAbiDecoder = new AbiDecoder(abis);
-    }
-    public tryToDecodeLogOrNoop<ArgsType extends DecodedLogArgs>(log: LogEntry): LogWithDecodedArgs<ArgsType> | RawLog {
-        if (this._knownERC20Tokens.has(log.address)) {
-            const maybeDecodedERC20Log = this._erc20AbiDecoder.tryToDecodeLogOrNoop(log);
-            return maybeDecodedERC20Log;
-        } else if (this._knownERC721Tokens.has(log.address)) {
-            const maybeDecodedERC721Log = this._erc721AbiDecoder.tryToDecodeLogOrNoop(log);
-            return maybeDecodedERC721Log;
-        } else {
-            const maybeDecodedLog = this._restAbiDecoder.tryToDecodeLogOrNoop(log);
-            return maybeDecodedLog;
-        }
-    }
-    // Hints the ABI decoder that a particular token address is ERC20 and events from it should be decoded as ERC20 events
-    public addERC20Token(address: string): void {
-        if (this._knownERC721Tokens.has(address)) {
-            throw new Error(TOKEN_TYPE_COLLISION);
-        }
-        this._knownERC20Tokens.add(address);
-    }
-    // Hints the ABI decoder that a particular token address is ERC721 and events from it should be decoded as ERC721 events
-    public addERC721Token(address: string): void {
-        if (this._knownERC20Tokens.has(address)) {
-            throw new Error(TOKEN_TYPE_COLLISION);
-        }
-        this._knownERC721Tokens.add(address);
-    }
-}
-- 
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