From c28ce1b86a92281506c9c8206367bd0c720734fc Mon Sep 17 00:00:00 2001
From: Iuri Matias <iuri.matias@gmail.com>
Date: Thu, 15 Feb 2018 16:05:00 -0500
Subject: [PATCH] move eventsDecoder to remixLib

---
 src/app.js                         |   2 +-
 src/app/execution/eventsDecoder.js | 123 -----------------------------
 2 files changed, 1 insertion(+), 124 deletions(-)
 delete mode 100644 src/app/execution/eventsDecoder.js

diff --git a/src/app.js b/src/app.js
index 600d56a447..5eccf39897 100644
--- a/src/app.js
+++ b/src/app.js
@@ -33,7 +33,7 @@ var examples = require('./app/editor/example-contracts')
 var modalDialogCustom = require('./app/ui/modal-dialog-custom')
 var Txlistener = require('./app/execution/txListener')
 var TxLogger = require('./app/execution/txLogger')
-var EventsDecoder = require('./app/execution/eventsDecoder')
+var EventsDecoder = remixLib.execution.EventsDecoder
 var handleImports = require('./app/compiler/compiler-imports')
 var FileManager = require('./app/files/fileManager')
 var ContextualListener = require('./app/editor/contextualListener')
diff --git a/src/app/execution/eventsDecoder.js b/src/app/execution/eventsDecoder.js
deleted file mode 100644
index 2127f469b4..0000000000
--- a/src/app/execution/eventsDecoder.js
+++ /dev/null
@@ -1,123 +0,0 @@
-'use strict'
-var ethJSABI = require('ethereumjs-abi')
-var txHelper = require('../execution/txHelper')
-
-/**
-  * Register to txListener and extract events
-  *
-  */
-class EventsDecoder {
-  constructor (opt = {}) {
-    this._api = opt.api
-  }
-
-/**
-  * use Transaction Receipt to decode logs. assume that the transaction as already been resolved by txListener.
-  * logs are decoded only if the contract if known by remix.
-  *
-  * @param {Object} tx - transaction object
-  * @param {Function} cb - callback
-  */
-  parseLogs (tx, contractName, compiledContracts, cb) {
-    if (tx.isCall) return cb(null, { decoded: [], raw: [] })
-    this._api.resolveReceipt(tx, (error, receipt) => {
-      if (error) return cb(error)
-      this._decodeLogs(tx, receipt, contractName, compiledContracts, cb)
-    })
-  }
-
-  _decodeLogs (tx, receipt, contract, contracts, cb) {
-    if (!contract || !receipt) {
-      return cb('cannot decode logs - contract or receipt not resolved ')
-    }
-    if (!receipt.logs) {
-      return cb(null, { decoded: [], raw: [] })
-    }
-    this._decodeEvents(tx, receipt.logs, contract, contracts, cb)
-  }
-
-  _eventABI (contract) {
-    var eventABI = {}
-    contract.abi.forEach(function (funABI, i) {
-      if (funABI.type !== 'event') {
-        return
-      }
-      var hash = ethJSABI.eventID(funABI.name, funABI.inputs.map(function (item) { return item.type }))
-      eventABI[hash.toString('hex')] = { event: funABI.name, inputs: funABI.inputs }
-    })
-    return eventABI
-  }
-
-  _eventsABI (compiledContracts) {
-    var eventsABI = {}
-    txHelper.visitContracts(compiledContracts, (contract) => {
-      eventsABI[contract.name] = this._eventABI(contract.object)
-    })
-    return eventsABI
-  }
-
-  _event (hash, eventsABI) {
-    for (var k in eventsABI) {
-      if (eventsABI[k][hash]) {
-        return eventsABI[k][hash]
-      }
-    }
-    return null
-  }
-
-  _decodeEvents (tx, logs, contractName, compiledContracts, cb) {
-    var eventsABI = this._eventsABI(compiledContracts)
-    var events = []
-    for (var i in logs) {
-      // [address, topics, mem]
-      var log = logs[i]
-      var topicId = log.topics[0]
-      var abi = this._event(topicId.replace('0x', ''), eventsABI)
-      if (abi) {
-        var event
-        try {
-          var decoded = new Array(abi.inputs.length)
-          event = abi.event
-          var indexed = 1
-          var nonindexed = []
-          // decode indexed param
-          abi.inputs.map(function (item, index) {
-            if (item.indexed) {
-              var encodedData = log.topics[indexed].replace('0x', '')
-              try {
-                decoded[index] = ethJSABI.rawDecode([item.type], new Buffer(encodedData, 'hex'))[0]
-                if (typeof decoded[index] !== 'string') {
-                  decoded[index] = ethJSABI.stringify([item.type], decoded[index])
-                }
-              } catch (e) {
-                decoded[index] = encodedData
-              }
-              indexed++
-            } else {
-              nonindexed.push(item.type)
-            }
-          })
-          // decode non indexed param
-          var nonindexededResult = ethJSABI.rawDecode(nonindexed, new Buffer(log.data.replace('0x', ''), 'hex'))
-          nonindexed = ethJSABI.stringify(nonindexed, nonindexededResult)
-          // ordering
-          var j = 0
-          abi.inputs.map(function (item, index) {
-            if (!item.indexed) {
-              decoded[index] = nonindexed[j]
-              j++
-            }
-          })
-        } catch (e) {
-          decoded = log.data
-        }
-        events.push({ topic: topicId, event: event, args: decoded })
-      } else {
-        events.push({ data: log.data, topics: log.topics })
-      }
-    }
-    cb(null, { decoded: events, raw: logs })
-  }
-}
-
-module.exports = EventsDecoder