Merge pull request #451 from ethereum/refactor_remix_debug5_ab

misc refactors remix-debug / remix-lib

apps/remix-ide/src/app/udapp/make-udapp.js

@@ -2,7 +2,6 @@ var registry = require('../../global/registry')
 var remixLib = require('@remix-project/remix-lib')
 var yo = require('yo-yo')
 var EventsDecoder = remixLib.execution.EventsDecoder
-var TransactionReceiptResolver = require('../../lib/transactionReceiptResolver')
 
 const transactionDetailsLinks = {
   'Main': 'https://www.etherscan.io/tx/',
@@ -27,7 +26,19 @@ export function makeUdapp (blockchain, compilersArtefacts, logHtmlCallback) {
   })
 
   // ----------------- Tx listener -----------------
-  const transactionReceiptResolver = new TransactionReceiptResolver(blockchain)
+  let _transactionReceipts = {}
+  const transactionReceiptResolver = (tx, cb) => {
+    if (_transactionReceipts[tx.hash]) {
+      return cb(null, _transactionReceipts[tx.hash])
+    }
+    blockchain.web3().eth.getTransactionReceipt(tx.hash, (error, receipt) => {
+      if (error) {
+        return cb(error)
+      }
+      _transactionReceipts[tx.hash] = receipt
+      cb(null, receipt)
+    })
+  }
 
   const txlistener = blockchain.getTxListener({
     api: {
@@ -35,9 +46,7 @@ export function makeUdapp (blockchain, compilersArtefacts, logHtmlCallback) {
         if (compilersArtefacts['__last']) return compilersArtefacts.getAllContractDatas()
         return null
       },
-      resolveReceipt: function (tx, cb) {
+      resolveReceipt: transactionReceiptResolver
-        transactionReceiptResolver.resolve(tx, cb)
-      }
     }
   })
 
@@ -45,11 +54,7 @@ export function makeUdapp (blockchain, compilersArtefacts, logHtmlCallback) {
   blockchain.startListening(txlistener)
 
   const eventsDecoder = new EventsDecoder({
-    api: {
+    resolveReceipt: transactionReceiptResolver
-      resolveReceipt: function (tx, cb) {
-        transactionReceiptResolver.resolve(tx, cb)
-      }
-    }
   })
   txlistener.startListening()
   registry.put({api: eventsDecoder, name: 'eventsDecoder'})

apps/remix-ide/src/lib/transactionReceiptResolver.js

@@ -1,23 +0,0 @@
-'use strict'
-
-module.exports = class TransactionReceiptResolver {
-  constructor (blockchain) {
-    this._transactionReceipts = {}
-    this.blockchain = blockchain
-  }
-
-  resolve (tx, cb) {
-    if (this._transactionReceipts[tx.hash]) {
-      return cb(null, this._transactionReceipts[tx.hash])
-    }
-    this.blockchain.web3().eth.getTransactionReceipt(tx.hash, (error, receipt) => {
-      if (!error) {
-        this._transactionReceipts[tx.hash] = receipt
-        cb(null, receipt)
-      } else {
-        cb(error)
-      }
-    })
-  }
-}
-

libs/remix-debug/src/Ethdebugger.js

@@ -33,7 +33,7 @@ function Ethdebugger (opts) {
 
   this.traceManager = new TraceManager({web3: this.web3})
   this.codeManager = new CodeManager(this.traceManager)
-  this.solidityProxy = new SolidityProxy(this.traceManager, this.codeManager)
+  this.solidityProxy = new SolidityProxy({getCurrentCalledAddressAt: this.traceManager.getCurrentCalledAddressAt.bind(this.traceManager), getCode: this.codeManager.getCode.bind(this.codeManager)})
   this.storageResolver = null
 
   this.callTree = new InternalCallTree(this.event, this.traceManager, this.solidityProxy, this.codeManager, { includeLocalVariables: true })
@@ -42,10 +42,11 @@ function Ethdebugger (opts) {
 Ethdebugger.prototype.setManagers = function () {
   this.traceManager = new TraceManager({web3: this.web3})
   this.codeManager = new CodeManager(this.traceManager)
-  this.solidityProxy = new SolidityProxy(this.traceManager, this.codeManager)
+  this.solidityProxy = new SolidityProxy({getCurrentCalledAddressAt: this.traceManager.getCurrentCalledAddressAt.bind(this.traceManager), getCode: this.codeManager.getCode.bind(this.codeManager)})
   this.storageResolver = null
 
   this.callTree = new InternalCallTree(this.event, this.traceManager, this.solidityProxy, this.codeManager, { includeLocalVariables: true })
+  this.event.trigger('managersChanged')
 }
 
 Ethdebugger.prototype.resolveStep = function (index) {

libs/remix-debug/src/code/breakpointManager.js

@@ -15,13 +15,20 @@ class BreakpointManager {
     * @param {Object} _debugger - type of EthDebugger
     * @return {Function} _locationToRowConverter - function implemented by editor which return a column/line position for a char source location
     */
-  constructor (_debugger, _locationToRowConverter, _jumpToCallback) {
+  constructor ({traceManager, callTree, solidityProxy, locationToRowConverter}) {
     this.event = new EventManager()
-    this.debugger = _debugger
+    this.traceManager = traceManager
+    this.callTree = callTree
+    this.solidityProxy = solidityProxy
     this.breakpoints = {}
-    this.locationToRowConverter = _locationToRowConverter
+    this.locationToRowConverter = locationToRowConverter
     this.previousLine
-    this.jumpToCallback = _jumpToCallback || (() => {}) // eslint-disable-line
+  }
+
+  setManagers({traceManager, callTree, solidityProxy}) {
+    this.traceManager = traceManager
+    this.callTree = callTree
+    this.solidityProxy = solidityProxy
   }
 
   /**
@@ -30,7 +37,10 @@ class BreakpointManager {
     *
     */
   async jumpNextBreakpoint (fromStep, defaultToLimit) {
-    this.jump(fromStep || 0, 1, defaultToLimit)
+    if (!this.locationToRowConverter) {
+      return console.log('row converter not provided')
+    }
+    this.jump(fromStep || 0, 1, defaultToLimit, this.traceManager.trace)
   }
 
   /**
@@ -39,64 +49,61 @@ class BreakpointManager {
     *
     */
   async jumpPreviousBreakpoint (fromStep, defaultToLimit) {
-    this.jump(fromStep || 0, -1, defaultToLimit)
-  }
-
-   /**
-    * start looking for the previous or next breakpoint
-    * @param {Int} direction - 1 or -1 direction of the search
-    * @param {Bool} defaultToLimit - if true jump to the limit (end if direction is 1, beginning if direction is -1) of the trace if no more breakpoint found
-    *
-    */
-  async jump (fromStep, direction, defaultToLimit) {
     if (!this.locationToRowConverter) {
-      console.log('row converter not provided')
+      return console.log('row converter not provided')
-      return
+    }
+    this.jump(fromStep || 0, -1, defaultToLimit, this.traceManager.trace)
   }
 
-    function depthChange (step, trace) {
+  depthChange (step, trace) {
     return trace[step].depth !== trace[step - 1].depth
   }
 
-    function hitLine (currentStep, sourceLocation, previousSourceLocation, self) {
+  hitLine(currentStep, sourceLocation, previousSourceLocation, trace) {
     // isJumpDestInstruction -> returning from a internal function call
     // depthChange -> returning from an external call
     // sourceLocation.start <= previousSourceLocation.start && ... -> previous src is contained in the current one
-      if ((helper.isJumpDestInstruction(self.debugger.traceManager.trace[currentStep]) && previousSourceLocation.jump === 'o') ||
+    if ((helper.isJumpDestInstruction(trace[currentStep]) && previousSourceLocation.jump === 'o') ||
-        depthChange(currentStep, self.debugger.traceManager.trace) ||
+      this.depthChange(currentStep, trace) ||
       (sourceLocation.start <= previousSourceLocation.start &&
         sourceLocation.start + sourceLocation.length >= previousSourceLocation.start + previousSourceLocation.length)) {
       return false
     }
-      self.jumpToCallback(currentStep)
+    this.event.trigger('breakpointStep', [currentStep])
-      self.event.trigger('breakpointHit', [sourceLocation, currentStep])
+    this.event.trigger('breakpointHit', [sourceLocation, currentStep])
     return true
   }
 
+   /**
+    * start looking for the previous or next breakpoint
+    * @param {Int} direction - 1 or -1 direction of the search
+    * @param {Bool} defaultToLimit - if true jump to the limit (end if direction is 1, beginning if direction is -1) of the trace if no more breakpoint found
+    *
+    */
+  async jump (fromStep, direction, defaultToLimit, trace) {
     let sourceLocation
     let previousSourceLocation
     let currentStep = fromStep + direction
     let lineHadBreakpoint = false
-    while (currentStep > 0 && currentStep < this.debugger.traceManager.trace.length) {
+    while (currentStep > 0 && currentStep < trace.length) {
       try {
         previousSourceLocation = sourceLocation
-        sourceLocation = await this.debugger.callTree.extractValidSourceLocation(currentStep)
+        sourceLocation = await this.callTree.extractValidSourceLocation(currentStep)
       } catch (e) {
-        console.log('cannot jump to breakpoint ' + e)
+        return console.log('cannot jump to breakpoint ' + e)
-        return
       }
       let lineColumn = await this.locationToRowConverter(sourceLocation)
       if (this.previousLine !== lineColumn.start.line) {
         if (direction === -1 && lineHadBreakpoint) { // TODO : improve this when we will build the correct structure before hand
           lineHadBreakpoint = false
-          if (hitLine(currentStep + 1, previousSourceLocation, sourceLocation, this)) {
+          if (this.hitLine(currentStep + 1, previousSourceLocation, sourceLocation, trace)) {
             return
           }
         }
         this.previousLine = lineColumn.start.line
         if (this.hasBreakpointAtLine(sourceLocation.file, lineColumn.start.line)) {
           lineHadBreakpoint = true
-          if (direction === 1 && hitLine(currentStep, sourceLocation, previousSourceLocation, this)) {
+          if (direction === 1 && this.hitLine(currentStep, sourceLocation, previousSourceLocation, trace)) {
             return
           }
         }
@@ -108,9 +115,9 @@ class BreakpointManager {
       return
     }
     if (direction === -1) {
-      this.jumpToCallback(0)
+      this.event.trigger('breakpointStep', [0])
     } else if (direction === 1) {
-      this.jumpToCallback(this.debugger.traceManager.trace.length - 1)
+      this.event.trigger('breakpointStep', [trace.length - 1])
     }
   }
 
@@ -122,7 +129,7 @@ class BreakpointManager {
     * @return {Bool} return true if the given @arg fileIndex @arg line refers to a breakpoint
     */
   hasBreakpointAtLine (fileIndex, line) {
-    const filename = this.debugger.solidityProxy.fileNameFromIndex(fileIndex)
+    const filename = this.solidityProxy.fileNameFromIndex(fileIndex)
     if (!(filename && this.breakpoints[filename])) {
       return false
     }

libs/remix-debug/src/code/codeManager.js

@@ -16,7 +16,16 @@ function CodeManager (_traceManager) {
   this.event = new EventManager()
   this.isLoading = false
   this.traceManager = _traceManager
-  this.codeResolver = new CodeResolver({web3: this.traceManager.web3})
+  this.codeResolver = new CodeResolver({getCode: async (address) => {
+    return new Promise((resolve, reject) => {
+      this.traceManager.web3.eth.getCode(address, (error, code) => {
+        if (error) {
+          return reject(error)
+        }
+        return resolve(code)
+      })
+    })
+  }})
 }
 
 /**

libs/remix-debug/src/code/codeResolver.js

@@ -1,8 +1,8 @@
 'use strict'
 const codeUtils = require('./codeUtils')
 
-function CodeResolver (options) {
+function CodeResolver ({getCode}) {
-  this.web3 = options.web3
+  this.getCode = getCode
 
   this.bytecodeByAddress = {} // bytes code by contract addesses
   this.instructionsByAddress = {} // assembly items instructions list by contract addesses
@@ -16,20 +16,13 @@ CodeResolver.prototype.clear = function () {
 }
 
 CodeResolver.prototype.resolveCode = async function (address) {
-  return new Promise((resolve, reject) => {
   const cache = this.getExecutingCodeFromCache(address)
   if (cache) {
-      return resolve(cache)
+    return cache
   }
 
-    this.web3.eth.getCode(address, (error, code) => {
+  const code = await this.getCode(address)
-      if (error) {
+  return this.cacheExecutingCode(address, code)
-        // return console.log(error)
-        return reject(error)
-      }
-      return resolve(this.cacheExecutingCode(address, code))
-    })
-  })
 }
 
 CodeResolver.prototype.cacheExecutingCode = function (address, hexCode) {
@@ -41,11 +34,8 @@ CodeResolver.prototype.cacheExecutingCode = function (address, hexCode) {
 }
 
 CodeResolver.prototype.formatCode = function (hexCode) {
-  const code = codeUtils.nameOpCodes(Buffer.from(hexCode.substring(2), 'hex'))
+  const [code, instructionsIndexByBytesOffset] = codeUtils.nameOpCodes(Buffer.from(hexCode.substring(2), 'hex'))
-  return {
+  return {code, instructionsIndexByBytesOffset}
-    code: code[0],
-    instructionsIndexByBytesOffset: code[1]
-  }
 }
 
 CodeResolver.prototype.getExecutingCodeFromCache = function (address) {

libs/remix-debug/src/debugger/debugger.js

@@ -21,12 +21,20 @@ function Debugger (options) {
     compilationResult: this.compilationResult
   })
 
-  this.breakPointManager = new BreakpointManager(this.debugger, async (sourceLocation) => {
+  const {traceManager, callTree, solidityProxy} = this.debugger
+  this.breakPointManager = new BreakpointManager({traceManager, callTree, solidityProxy, locationToRowConverter: async (sourceLocation) => {
     const compilationResult = await this.compilationResult()
     if (!compilationResult) return { start: null, end: null }
     return this.offsetToLineColumnConverter.offsetToLineColumn(sourceLocation, sourceLocation.file, compilationResult.source.sources, compilationResult.data.sources)
-  }, (step) => {
+  }})
-    this.event.trigger('breakpointStep', [step])
+
+  this.breakPointManager.event.register('managersChanged', () => {
+    const {traceManager, callTree, solidityProxy} = this.debugger
+    this.breakPointManager.setManagers({traceManager, callTree, solidityProxy})
+  })
+
+  this.breakPointManager.event.register('breakpointStep', (step) => {
+    this.step_manager.jumpTo(step)
   })
 
   this.debugger.setBreakpointManager(this.breakPointManager)
@@ -38,10 +46,6 @@ function Debugger (options) {
   this.debugger.event.register('traceUnloaded', this, () => {
     this.event.trigger('debuggerStatus', [false])
   })
-
-  this.event.register('breakpointStep', (step) => {
-    this.step_manager.jumpTo(step)
-  })
 }
 
 Debugger.prototype.registerAndHighlightCodeItem = async function (index) {

libs/remix-debug/src/solidity-decoder/decodeInfo.js

@@ -369,8 +369,8 @@ function computeOffsets (types, stateDefinitions, contractName, location) {
 }
 
 module.exports = {
-  parseType: parseType,
+  parseType,
-  computeOffsets: computeOffsets,
+  computeOffsets,
   Uint: uint,
   Address: address,
   Bool: bool,

libs/remix-debug/src/solidity-decoder/index.js

@@ -3,9 +3,4 @@ const stateDecoder = require('./stateDecoder')
 const localDecoder = require('./localDecoder')
 const InternalCallTree = require('./internalCallTree')
 
-module.exports = {
+module.exports = {SolidityProxy, stateDecoder, localDecoder, InternalCallTree}
-  SolidityProxy: SolidityProxy,
-  stateDecoder: stateDecoder,
-  localDecoder: localDecoder,
-  InternalCallTree: InternalCallTree
-}

libs/remix-debug/src/solidity-decoder/localDecoder.js

@@ -35,6 +35,4 @@ function formatMemory (memory) {
   return memory
 }
 
-module.exports = {
+module.exports = {solidityLocals}
-  solidityLocals: solidityLocals
-}

libs/remix-debug/src/solidity-decoder/solidityProxy.js

@@ -6,11 +6,11 @@ const astHelper = require('./astHelper')
 const util = remixLib.util
 
 class SolidityProxy {
-  constructor (traceManager, codeManager) {
+  constructor ({getCurrentCalledAddressAt, getCode}) {
     this.cache = new Cache()
     this.reset({})
-    this.traceManager = traceManager
+    this.getCurrentCalledAddressAt = getCurrentCalledAddressAt
-    this.codeManager = codeManager
+    this.getCode = getCode
   }
 
   /**
@@ -40,11 +40,11 @@ class SolidityProxy {
     * @param {Function} cb  - callback returns (error, contractName)
     */
   async contractNameAt (vmTraceIndex) {
-    const address = this.traceManager.getCurrentCalledAddressAt(vmTraceIndex)
+    const address = this.getCurrentCalledAddressAt(vmTraceIndex)
     if (this.cache.contractNameByAddress[address]) {
       return this.cache.contractNameByAddress[address]
     }
-    const code = await this.codeManager.getCode(address)
+    const code = await this.getCode(address)
     const contractName = contractNameFromCode(this.contracts, code.bytecode, address)
     this.cache.contractNameByAddress[address] = contractName
     return contractName

libs/remix-debug/src/solidity-decoder/stateDecoder.js

@@ -1,5 +1,5 @@
 const astHelper = require('./astHelper')
-const decodeInfo = require('./decodeInfo')
+const {computeOffsets} = require('./decodeInfo')
 
 /**
   * decode the contract state storage
@@ -40,7 +40,7 @@ function extractStateVariables (contractName, sourcesList) {
     return []
   }
   const types = states[contractName].stateVariables
-  const offsets = decodeInfo.computeOffsets(types, states, contractName, 'storage')
+  const offsets = computeOffsets(types, states, contractName, 'storage')
   if (!offsets) {
     return [] // TODO should maybe return an error
   }
@@ -64,8 +64,4 @@ async function solidityState (storageResolver, astList, contractName) {
   }
 }
 
-module.exports = {
+module.exports = {solidityState, extractStateVariables, decodeState}
-  solidityState: solidityState,
-  extractStateVariables: extractStateVariables,
-  decodeState: decodeState
-}

libs/remix-debug/src/solidity-decoder/types/Address.js

@@ -10,9 +10,8 @@ class Address extends ValueType {
   decodeValue (value) {
     if (!value) {
       return '0x0000000000000000000000000000000000000000'
-    } else {
-      return '0x' + util.extractHexByteSlice(value, this.storageBytes, 0).toUpperCase()
     }
+    return '0x' + util.extractHexByteSlice(value, this.storageBytes, 0).toUpperCase()
   }
 }
 

libs/remix-debug/src/solidity-decoder/types/ArrayType.js

@@ -69,11 +69,7 @@ class ArrayType extends RefType {
         currentLocation.offset = 0
       }
     }
-    return {
+    return {value: ret, length: '0x' + size.toString(16), type: this.typeName}
-      value: ret,
-      length: '0x' + size.toString(16),
-      type: this.typeName
-    }
   }
 
   decodeFromMemoryInternal (offset, memory) {
@@ -89,11 +85,7 @@ class ArrayType extends RefType {
       ret.push(this.underlyingType.decodeFromMemory(contentOffset, memory))
       offset += 32
     }
-    return {
+    return {value: ret, length: '0x' + length.toString(16), type: this.typeName}
-      value: ret,
-      length: '0x' + length.toString(16),
-      type: this.typeName
-    }
   }
 }
 

libs/remix-debug/src/solidity-decoder/types/DynamicByteArray.js

@@ -16,10 +16,7 @@ class DynamicByteArray extends RefType {
       value = await util.extractHexValue(location, storageResolver, this.storageBytes)
     } catch (e) {
       console.log(e)
-      return {
+      return {value: '<decoding failed - ' + e.message + '>', type: this.typeName}
-        value: '<decoding failed - ' + e.message + '>',
-        type: this.typeName
-      }
     }
     const bn = new BN(value, 16)
     if (bn.testn(0)) {
@@ -31,10 +28,7 @@ class DynamicByteArray extends RefType {
         currentSlot = await util.readFromStorage(dataPos, storageResolver)
       } catch (e) {
         console.log(e)
-        return {
+        return {value: '<decoding failed - ' + e.message + '>', type: this.typeName}
-          value: '<decoding failed - ' + e.message + '>',
-          type: this.typeName
-        }
       }
       while (length.gt(ret.length) && ret.length < 32000) {
         currentSlot = currentSlot.replace('0x', '')
@@ -44,24 +38,13 @@ class DynamicByteArray extends RefType {
           currentSlot = await util.readFromStorage(dataPos, storageResolver)
         } catch (e) {
           console.log(e)
-          return {
+          return {value: '<decoding failed - ' + e.message + '>', type: this.typeName}
-            value: '<decoding failed - ' + e.message + '>',
-            type: this.typeName
-          }
         }
       }
-      return {
+      return {value: '0x' + ret.replace(/(00)+$/, ''), length: '0x' + length.toString(16), type: this.typeName}
-        value: '0x' + ret.replace(/(00)+$/, ''),
-        length: '0x' + length.toString(16),
-        type: this.typeName
-      }
     } else {
       var size = parseInt(value.substr(value.length - 2, 2), 16) / 2
-      return {
+      return {value: '0x' + value.substr(0, size * 2), length: '0x' + size.toString(16), type: this.typeName}
-        value: '0x' + value.substr(0, size * 2),
-        length: '0x' + size.toString(16),
-        type: this.typeName
-      }
     }
   }
 
@@ -69,11 +52,7 @@ class DynamicByteArray extends RefType {
     offset = 2 * offset
     let length = memory.substr(offset, 64)
     length = 2 * parseInt(length, 16)
-    return {
+    return {length: '0x' + length.toString(16), value: '0x' + memory.substr(offset + 64, length), type: this.typeName}
-      length: '0x' + length.toString(16),
-      value: '0x' + memory.substr(offset + 64, length),
-      type: this.typeName
-    }
   }
 }
 

libs/remix-debug/src/solidity-decoder/types/Mapping.js

@@ -28,20 +28,13 @@ class Mapping extends RefType {
     const mappingPreimages = await storageResolver.mappingsLocation(corrections)
     let ret = await this.decodeMappingsLocation(mappingPreimages, location, storageResolver) // fetch mapping storage changes
     ret = Object.assign({}, this.initialDecodedState, ret) // merge changes
-    return {
+    return {value: ret, type: this.typeName}
-      value: ret,
-      type: this.typeName
-    }
   }
 
   decodeFromMemoryInternal (offset, memory) {
     // mappings can only exist in storage and not in memory
     // so this should never be called
-    return {
+    return {value: '<not implemented>', length: '0x', type: this.typeName}
-      value: '<not implemented>',
-      length: '0x',
-      type: this.typeName
-    }
   }
 
   async decodeMappingsLocation (preimages, location, storageResolver) {

libs/remix-debug/src/solidity-decoder/types/RefType.js

@@ -21,10 +21,7 @@ class RefType {
     */
   async decodeFromStack (stackDepth, stack, memory, storageResolver) {
     if (stack.length - 1 < stackDepth) {
-      return {
+      return {error: '<decoding failed - stack underflow ' + stackDepth + '>', type: this.typeName}
-        error: '<decoding failed - stack underflow ' + stackDepth + '>',
-        type: this.typeName
-      }
     }
     let offset = stack[stack.length - 1 - stackDepth]
     if (this.isInStorage()) {
@@ -33,19 +30,13 @@ class RefType {
         return await this.decodeFromStorage({ offset: 0, slot: offset }, storageResolver)
       } catch (e) {
         console.log(e)
-        return {
+        return {error: '<decoding failed - ' + e.message + '>', type: this.typeName}
-          error: '<decoding failed - ' + e.message + '>',
-          type: this.typeName
-        }
       }
     } else if (this.isInMemory()) {
       offset = parseInt(offset, 16)
       return this.decodeFromMemoryInternal(offset, memory)
     } else {
-      return {
+      return {error: '<decoding failed - no decoder for ' + this.location + '>', type: this.typeName}
-        error: '<decoding failed - no decoder for ' + this.location + '>',
-        type: this.typeName
-      }
     }
   }
 

libs/remix-debug/src/solidity-decoder/types/StringType.js

@@ -39,11 +39,7 @@ function format (decoded) {
   }
   let value = decoded.value
   value = value.replace('0x', '').replace(/(..)/g, '%$1')
-  const ret = {
+  const ret = {length: decoded.length, raw: decoded.value, type: 'string'}
-    length: decoded.length,
-    raw: decoded.value,
-    type: 'string'
-  }
   try {
     ret.value = decodeURIComponent(value)
   } catch (e) {

libs/remix-debug/src/solidity-decoder/types/Struct.js

@@ -22,10 +22,7 @@ class Struct extends RefType {
         ret[item.name] = '<decoding failed - ' + e.message + '>'
       }
     }
-    return {
+    return {value: ret, type: this.typeName}
-      value: ret,
-      type: this.typeName
-    }
   }
 
   decodeFromMemoryInternal (offset, memory) {
@@ -36,10 +33,7 @@ class Struct extends RefType {
       ret[item.name] = member
       offset += 32
     })
-    return {
+    return {value: ret, type: this.typeName}
-      value: ret,
-      type: this.typeName
-    }
   }
 }
 

libs/remix-debug/src/solidity-decoder/types/ValueType.js

@@ -19,16 +19,10 @@ class ValueType {
   async decodeFromStorage (location, storageResolver) {
     try {
       var value = await util.extractHexValue(location, storageResolver, this.storageBytes)
-      return {
+      return {value: this.decodeValue(value), type: this.typeName}
-        value: this.decodeValue(value),
-        type: this.typeName
-      }
     } catch (e) {
       console.log(e)
-      return {
+      return {value: '<decoding failed - ' + e.message + '>', type: this.typeName}
-        value: '<decoding failed - ' + e.message + '>',
-        type: this.typeName
-      }
     }
   }
 
@@ -47,10 +41,7 @@ class ValueType {
     } else {
       value = this.decodeValue(stack[stack.length - 1 - stackDepth].replace('0x', ''))
     }
-    return {
+    return {value, type: this.typeName}
-      value: value,
-      type: this.typeName
-    }
   }
 
   /**
@@ -62,10 +53,7 @@ class ValueType {
     */
   decodeFromMemory (offset, memory) {
     let value = memory.substr(2 * offset, 64)
-    return {
+    return {value: this.decodeValue(value), type: this.typeName}
-      value: this.decodeValue(value),
-      type: this.typeName
-    }
   }
 }
 

libs/remix-debug/src/solidity-decoder/types/util.js

@@ -2,20 +2,6 @@
 const ethutil = require('ethereumjs-util')
 const BN = require('ethereumjs-util').BN
 
-module.exports = {
-  readFromStorage: readFromStorage,
-  decodeIntFromHex: decodeIntFromHex,
-  extractHexValue: extractHexValue,
-  extractHexByteSlice: extractHexByteSlice,
-  toBN: toBN,
-  add: add,
-  sub: sub,
-  extractLocation: extractLocation,
-  removeLocation: removeLocation,
-  normalizeHex: normalizeHex,
-  extractLocationFromAstVariable: extractLocationFromAstVariable
-}
-
 function decodeIntFromHex (value, byteLength, signed) {
   let bigNumber = new BN(value, 16)
   if (signed) {
@@ -30,15 +16,11 @@ function readFromStorage (slot, storageResolver) {
     storageResolver.storageSlot(hexSlot, (error, slot) => {
       if (error) {
         return reject(error)
-      } else {
-        if (!slot) {
-          slot = {
-            key: slot,
-            value: ''
       }
+      if (!slot) {
+        slot = { key: slot, value: '' }
       }
       return resolve(normalizeHex(slot.value))
-      }
     })
   })
 }
@@ -120,3 +102,5 @@ function normalizeHex (hex) {
   }
   return hex
 }
+
+module.exports = {readFromStorage, decodeIntFromHex, extractHexValue, extractHexByteSlice, toBN, add, sub, extractLocation, removeLocation, normalizeHex, extractLocationFromAstVariable}

libs/remix-debug/src/source/sourceLocationTracker.js

@@ -88,10 +88,9 @@ function extractSourceMap (self, codeManager, address, contracts) {
       const sourceMap = getSourceMap(address, result.bytecode, contracts)
       if (sourceMap) {
         if (!helper.isContractCreation(address)) self.sourceMapByAddress[address] = sourceMap
-        resolve(sourceMap)
+        return resolve(sourceMap)
-      } else {
-        reject('no sourcemap associated with the code ' + address)
       }
+      reject('no sourcemap associated with the code ' + address)
     }).catch(reject)
   })
 }

libs/remix-debug/src/source/sourceMappingDecoder.js

@@ -94,12 +94,8 @@ SourceMappingDecoder.prototype.convertOffsetToLineColumn = function (sourceLocat
       start: convertFromCharPosition(sourceLocation.start, lineBreakPositions),
       end: convertFromCharPosition(sourceLocation.start + sourceLocation.length, lineBreakPositions)
     }
-  } else {
-    return {
-      start: null,
-      end: null
-    }
   }
+  return {start: null, end: null}
 }
 
 /**
@@ -119,10 +115,7 @@ function convertFromCharPosition (pos, lineBreakPositions) {
   }
   const beginColumn = line === 0 ? 0 : (lineBreakPositions[line - 1] + 1)
   const column = pos - beginColumn
-  return {
+  return {line, column}
-    line: line,
-    column: column
-  }
 }
 
 function sourceLocationFromAstNode (astNode) {

libs/remix-debug/src/storage/mappingPreimages.js

@@ -51,10 +51,9 @@ function getPreimage (web3, key) {
   return new Promise((resolve, reject) => {
     web3.debug.preimage(key.indexOf('0x') === 0 ? key : '0x' + key, (error, preimage) => {
       if (error) {
-        resolve(null)
+        return resolve(null)
-      } else {
-        resolve(preimage)
       }
+      resolve(preimage)
     })
   })
 }

libs/remix-debug/test/debugger.js

@@ -273,8 +273,14 @@ function testDebugging (debugManager) {
   tape('breakPointManager', (t) => {
     t.plan(2)
     var sourceMappingDecoder = new SourceMappingDecoder()
-    var breakPointManager = new BreakpointManager(debugManager, (rawLocation) => {
+    const {traceManager, callTree, solidityProxy} = debugManager
+    var breakPointManager = new BreakpointManager({traceManager, callTree, solidityProxy, locationToRowConverter: async (rawLocation) => {
       return sourceMappingDecoder.convertOffsetToLineColumn(rawLocation, sourceMappingDecoder.getLinebreakPositions(ballot))
+    }})
+
+    breakPointManager.event.register('managersChanged', () => {
+      const {traceManager, callTree, solidityProxy} = debugManager
+      breakPointManager.setManagers({traceManager, callTree, solidityProxy})
     })
 
     breakPointManager.add({fileName: 'test.sol', row: 38})

libs/remix-debug/test/decoder/localsTests/helper.js

@@ -25,13 +25,12 @@ function decodeLocal (st, index, traceManager, callTree, verifier) {
       }],
       index,
       function (error, result) {
-        if (!error) {
+        if (error) {
+          return st.fail(error)
+        }
         localDecoder.solidityLocals(index, callTree, result[0].value, result[1].value, {}, { start: 5000 }).then((locals) => {
           verifier(locals)
         })
-        } else {
-          st.fail(error)
-        }
       })
   } catch (e) {
     st.fail(e.message)

libs/remix-debug/test/decoder/localsTests/int.js

@@ -15,17 +15,17 @@ var helper = require('./helper')
 module.exports = function (st, vm, privateKey, contractBytecode, compilationResult, cb) {
   vmCall.sendTx(vm, { nonce: 0, privateKey: privateKey }, null, 0, contractBytecode, function (error, txHash) {
     if (error) {
-      st.fail(error)
+      return st.fail(error)
-    } else {
+    }
     vm.web3.eth.getTransaction(txHash, function (error, tx) {
       if (error) {
-          st.fail(error)
+        return st.fail(error)
-        } else {
+      }
       tx.to = traceHelper.contractCreationToken('0')
       var traceManager = new TraceManager({ web3: vm.web3 })
       var codeManager = new CodeManager(traceManager)
       codeManager.clear()
-          var solidityProxy = new SolidityProxy(traceManager, codeManager)
+      var solidityProxy = new SolidityProxy({ getCurrentCalledAddressAt: traceManager.getCurrentCalledAddressAt.bind(traceManager), getCode: codeManager.getCode.bind(codeManager) })
       solidityProxy.reset(compilationResult)
       var debuggerEvent = new EventManager()
       var callTree = new InternalCallTree(debuggerEvent, traceManager, solidityProxy, codeManager, { includeLocalVariables: true })
@@ -44,6 +44,7 @@ module.exports = function (st, vm, privateKey, contractBytecode, compilationResu
           st.equals(functions1.length, 1)
           st.equals(functions2.length, 2)
           st.equals(functions3.length, 0)
+
           st.equals(Object.keys(functions1[0])[0], 'functionDefinition')
           st.equals(Object.keys(functions1[0])[1], 'inputs')
           st.equals(functions1[0].inputs[0], 'foo')
@@ -123,9 +124,7 @@ module.exports = function (st, vm, privateKey, contractBytecode, compilationResu
       }).catch((error) => {
         st.fail(error)
       })
-        }
     })
-    }
   })
 }
 

libs/remix-debug/test/decoder/localsTests/misc.js

@@ -12,17 +12,17 @@ var CodeManager = require('../../../src/code/codeManager')
 module.exports = function (st, vm, privateKey, contractBytecode, compilationResult, cb) {
   vmCall.sendTx(vm, { nonce: 0, privateKey: privateKey }, null, 0, contractBytecode, function (error, txHash) {
     if (error) {
-      st.fail(error)
+      return st.fail(error)
-    } else {
+    }
     vm.web3.eth.getTransaction(txHash, function (error, tx) {
       if (error) {
-          st.fail(error)
+        return st.fail(error)
-        } else {
+      }
       tx.to = traceHelper.contractCreationToken('0')
       var traceManager = new TraceManager({ web3: vm.web3 })
       var codeManager = new CodeManager(traceManager)
       codeManager.clear()
-          var solidityProxy = new SolidityProxy(traceManager, codeManager)
+      var solidityProxy = new SolidityProxy({ getCurrentCalledAddressAt: traceManager.getCurrentCalledAddressAt.bind(traceManager), getCode: codeManager.getCode.bind(codeManager) })
       solidityProxy.reset(compilationResult)
       var debuggerEvent = new EventManager()
       var callTree = new InternalCallTree(debuggerEvent, traceManager, solidityProxy, codeManager, { includeLocalVariables: true })
@@ -69,8 +69,6 @@ module.exports = function (st, vm, privateKey, contractBytecode, compilationResu
       }).catch((error) => {
         st.fail(error)
       })
-        }
     })
-    }
   })
 }

libs/remix-debug/test/decoder/localsTests/misc2.js

@@ -13,17 +13,17 @@ var CodeManager = require('../../../src/code/codeManager')
 module.exports = function (st, vm, privateKey, contractBytecode, compilationResult, cb) {
   vmCall.sendTx(vm, { nonce: 0, privateKey: privateKey }, null, 0, contractBytecode, function (error, txHash) {
     if (error) {
-      st.fail(error)
+      return st.fail(error)
-    } else {
+    }
     vm.web3.eth.getTransaction(txHash, function (error, tx) {
       if (error) {
-          st.fail(error)
+        return st.fail(error)
-        } else {
+      }
       tx.to = traceHelper.contractCreationToken('0')
       var traceManager = new TraceManager({ web3: vm.web3 })
       var codeManager = new CodeManager(traceManager)
       codeManager.clear()
-          var solidityProxy = new SolidityProxy(traceManager, codeManager)
+      var solidityProxy = new SolidityProxy({ getCurrentCalledAddressAt: traceManager.getCurrentCalledAddressAt.bind(traceManager), getCode: codeManager.getCode.bind(codeManager) })
       solidityProxy.reset(compilationResult)
       var debuggerEvent = new EventManager()
       var callTree = new InternalCallTree(debuggerEvent, traceManager, solidityProxy, codeManager, { includeLocalVariables: true })
@@ -56,8 +56,6 @@ module.exports = function (st, vm, privateKey, contractBytecode, compilationResu
       }).catch((error) => {
         st.fail(error)
       })
-        }
     })
-    }
   })
 }

libs/remix-debug/test/decoder/localsTests/structArray.js

@@ -12,17 +12,17 @@ var CodeManager = require('../../../src/code/codeManager')
 module.exports = function (st, vm, privateKey, contractBytecode, compilationResult, cb) {
   vmCall.sendTx(vm, { nonce: 0, privateKey: privateKey }, null, 0, contractBytecode, function (error, txHash) {
     if (error) {
-      st.fail(error)
+      return st.fail(error)
-    } else {
+    }
     vm.web3.eth.getTransaction(txHash, function (error, tx) {
       if (error) {
-          st.fail(error)
+        return st.fail(error)
-        } else {
+      }
       tx.to = traceHelper.contractCreationToken('0')
       var traceManager = new TraceManager({ web3: vm.web3 })
       var codeManager = new CodeManager(traceManager)
       codeManager.clear()
-          var solidityProxy = new SolidityProxy(traceManager, codeManager)
+      var solidityProxy = new SolidityProxy({ getCurrentCalledAddressAt: traceManager.getCurrentCalledAddressAt.bind(traceManager), getCode: codeManager.getCode.bind(codeManager) })
       solidityProxy.reset(compilationResult)
       var debuggerEvent = new EventManager()
       var callTree = new InternalCallTree(debuggerEvent, traceManager, solidityProxy, codeManager, { includeLocalVariables: true })
@@ -113,8 +113,6 @@ module.exports = function (st, vm, privateKey, contractBytecode, compilationResu
       }).catch((error) => {
         st.fail(error)
       })
-        }
     })
-    }
   })
 }

libs/remix-lib/src/eventManager.js

@@ -44,10 +44,7 @@ eventManager.prototype.register = function (eventName, obj, func) {
     func = obj
     obj = this.anonymous
   }
-  this.registered[eventName].push({
+  this.registered[eventName].push({obj, func})
-    obj: obj,
-    func: func
-  })
 }
 
 /*

libs/remix-lib/src/execution/eventsDecoder.js

@@ -7,8 +7,8 @@ const txHelper = require('./txHelper')
   *
   */
 class EventsDecoder {
-  constructor (opt = {}) {
+  constructor ({resolveReceipt}) {
-    this._api = opt.api
+    this.resolveReceipt = resolveReceipt
   }
 
 /**
@@ -20,7 +20,7 @@ class EventsDecoder {
   */
   parseLogs (tx, contractName, compiledContracts, cb) {
     if (tx.isCall) return cb(null, { decoded: [], raw: [] })
-    this._api.resolveReceipt(tx, (error, receipt) => {
+    this.resolveReceipt(tx, (error, receipt) => {
       if (error) return cb(error)
       this._decodeLogs(tx, receipt, contractName, compiledContracts, cb)
     })

libs/remix-lib/src/execution/txListener.js

@@ -9,6 +9,16 @@ const defaultExecutionContext = require('./execution-context')
 const txFormat = require('./txFormat')
 const txHelper = require('./txHelper')
 
+function addExecutionCosts(txResult, tx) {
+  if (txResult && txResult.result) {
+    if (txResult.result.execResult) {
+      tx.returnValue = txResult.result.execResult.returnValue
+      if (txResult.result.execResult.gasUsed) tx.executionCost = txResult.result.execResult.gasUsed.toString(10)
+    }
+    if (txResult.result.gasUsed) tx.transactionCost = txResult.result.gasUsed.toString(10)
+  }
+}
+
 /**
   * poll web3 each 2s if web3
   * listen on transaction executed event if VM
@@ -80,16 +90,6 @@ class TxListener {
         })
       })
     })
-
-    function addExecutionCosts (txResult, tx) {
-      if (txResult && txResult.result) {
-        if (txResult.result.execResult) {
-          tx.returnValue = txResult.result.execResult.returnValue
-          if (txResult.result.execResult.gasUsed) tx.executionCost = txResult.result.execResult.gasUsed.toString(10)
-        }
-        if (txResult.result.gasUsed) tx.transactionCost = txResult.result.gasUsed.toString(10)
-      }
-    }
   }
 
   /**

libs/remix-lib/src/execution/txRunner.js

@@ -84,15 +84,14 @@ class TxRunner {
     }
 
     if (!this.executionContext.isVM()) {
-      this.runInNode(args.from, args.to, data, args.value, args.gasLimit, args.useCall, confirmationCb, gasEstimationForceSend, promptCb, callback)
+      return this.runInNode(args.from, args.to, data, args.value, args.gasLimit, args.useCall, confirmationCb, gasEstimationForceSend, promptCb, callback)
-    } else {
+    }
     try {
       this.runInVm(args.from, args.to, data, args.value, args.gasLimit, args.useCall, args.timestamp, callback)
     } catch (e) {
       callback(e, null)
     }
   }
-  }
 
   runInVm (from, to, data, value, gasLimit, useCall, timestamp, callback) {
     const self = this
@@ -228,9 +227,8 @@ async function tryTillReceiptAvailable (txhash, executionContext) {
         // Try again with a bit of delay if error or if result still null
         await pause()
         return resolve(await tryTillReceiptAvailable(txhash, executionContext))
-      } else {
-        return resolve(receipt)
       }
+      return resolve(receipt)
     })
   })
 }
@@ -242,9 +240,8 @@ async function tryTillTxAvailable (txhash, executionContext) {
         // Try again with a bit of delay if error or if result still null
         await pause()
         return resolve(await tryTillTxAvailable(txhash, executionContext))
-      } else {
-        return resolve(tx)
       }
+      return resolve(tx)
     })
   })
 }
@@ -253,8 +250,8 @@ async function pause () { return new Promise((resolve, reject) => { setTimeout(r
 
 function run(self, tx, stamp, confirmationCb, gasEstimationForceSend, promptCb, callback) {
   if (!self.runAsync && Object.keys(self.pendingTxs).length) {
-    self.queusTxs.push({ tx, stamp, callback })
+    return self.queusTxs.push({ tx, stamp, callback })
-  } else {
+  }
   self.pendingTxs[stamp] = tx
   self.execute(tx, confirmationCb, gasEstimationForceSend, promptCb, function (error, result) {
     delete self.pendingTxs[stamp]
@@ -265,6 +262,5 @@ function run (self, tx, stamp, confirmationCb, gasEstimationForceSend, promptCb,
     }
   })
 }
-}
 
 module.exports = TxRunner

libs/remix-lib/src/storage.js

@@ -27,10 +27,8 @@ function Storage (prefix) {
   this.remove = function (name) {
     if (typeof window !== 'undefined') {
       window.localStorage.removeItem(prefix + name)
-      return true
-    } else {
-      return true
     }
+    return true
   }
 
   this.rename = function (originalName, newName) {
@@ -46,9 +44,8 @@ function Storage (prefix) {
     // NOTE: this is a workaround for some browsers
     if (typeof window !== 'undefined') {
       return Object.keys(window.localStorage).filter(function (item) { return item !== null && item !== undefined })
-    } else {
-      return []
     }
+    return []
   }
 
   this.keys = function () {

libs/remix-lib/src/universalDapp.js

@@ -91,10 +91,10 @@ module.exports = class UniversalDApp {
       if (!this.config.get('settings/personal-mode')) {
         return cb('Not running in personal mode')
       }
-      passwordPromptCb((passphrase) => {
+      return passwordPromptCb((passphrase) => {
         this.executionContext.web3().personal.newAccount(passphrase, cb)
       })
-    } else {
+    }
     let privateKey
     do {
       privateKey = crypto.randomBytes(32)
@@ -102,7 +102,6 @@ module.exports = class UniversalDApp {
     this._addAccount(privateKey, '0x56BC75E2D63100000')
     cb(null, '0x' + privateToAddress(privateKey).toString('hex'))
   }
-  }
 
   /** Add an account to the list of account (only for Javascript VM) */
   _addAccount (privateKey, balance) {
@@ -110,7 +109,9 @@ module.exports = class UniversalDApp {
       throw new Error('_addAccount() cannot be called in non-VM mode')
     }
 
-    if (this.accounts) {
+    if (!this.accounts) {
+      return
+    }
     privateKey = Buffer.from(privateKey, 'hex')
     const address = privateToAddress(privateKey)
 
@@ -126,7 +127,6 @@ module.exports = class UniversalDApp {
 
     this.accounts[toChecksumAddress('0x' + address.toString('hex'))] = { privateKey, nonce: 0 }
   }
-  }
 
   /** Return the list of accounts */
   getAccounts (cb) {
@@ -175,36 +175,32 @@ module.exports = class UniversalDApp {
     address = stripHexPrefix(address)
 
     if (!this.executionContext.isVM()) {
-      this.executionContext.web3().eth.getBalance(address, (err, res) => {
+      return this.executionContext.web3().eth.getBalance(address, (err, res) => {
         if (err) {
-          cb(err)
+          return cb(err)
-        } else {
-          cb(null, res.toString(10))
         }
+        cb(null, res.toString(10))
       })
-    } else {
+    }
     if (!this.accounts) {
       return cb('No accounts?')
     }
 
     this.executionContext.vm().stateManager.getAccount(Buffer.from(address, 'hex'), (err, res) => {
       if (err) {
-          cb('Account not found')
+        return cb('Account not found')
-        } else {
-          cb(null, new BN(res.balance).toString(10))
       }
+      cb(null, new BN(res.balance).toString(10))
     })
   }
-  }
 
   /** Get the balance of an address, and convert wei to ether */
   getBalanceInEther (address, callback) {
     this.getBalance(address, (error, balance) => {
       if (error) {
-        callback(error)
+        return callback(error)
-      } else {
-        callback(null, this.executionContext.web3().utils.fromWei(balance, 'ether'))
       }
+      callback(null, this.executionContext.web3().utils.fromWei(balance, 'ether'))
     })
   }
 
@@ -219,10 +215,7 @@ module.exports = class UniversalDApp {
     * @param {Function} callback    - callback.
     */
   createContract (data, confirmationCb, continueCb, promptCb, callback) {
-    this.runTx({data: data, useCall: false}, confirmationCb, continueCb, promptCb, (error, txResult) => {
+    this.runTx({data: data, useCall: false}, confirmationCb, continueCb, promptCb, callback)
-      // see universaldapp.js line 660 => 700 to check possible values of txResult (error case)
-      callback(error, txResult)
-    })
   }
 
   /**
@@ -235,10 +228,7 @@ module.exports = class UniversalDApp {
     */
   callFunction (to, data, funAbi, confirmationCb, continueCb, promptCb, callback) {
     const useCall = funAbi.stateMutability === 'view' || funAbi.stateMutability === 'pure'
-    this.runTx({to, data, useCall}, confirmationCb, continueCb, promptCb, (error, txResult) => {
+    this.runTx({to, data, useCall}, confirmationCb, continueCb, promptCb, callback)
-      // see universaldapp.js line 660 => 700 to check possible values of txResult (error case)
-      callback(error, txResult)
-    })
   }
 
    /**
@@ -249,10 +239,7 @@ module.exports = class UniversalDApp {
     * @param {Function} callback    - callback.
     */
   sendRawTransaction (to, data, confirmationCb, continueCb, promptCb, callback) {
-    this.runTx({to, data, useCall: false}, confirmationCb, continueCb, promptCb, (error, txResult) => {
+    this.runTx({to, data, useCall: false}, confirmationCb, continueCb, promptCb, callback)
-      // see universaldapp.js line 660 => 700 to check possible values of txResult (error case)
-      callback(error, txResult)
-    })
   }
 
   context () {

libs/remix-lib/src/web3Provider/web3Providers.js

@@ -19,10 +19,9 @@ Web3Providers.prototype.addProvider = function (type, obj) {
 
 Web3Providers.prototype.get = function (type, cb) {
   if (this.modes[type]) {
-    cb(null, this.modes[type])
+    return cb(null, this.modes[type])
-  } else {
-    cb('error: this provider has not been setup (' + type + ')', null)
   }
+  cb('error: this provider has not been setup (' + type + ')', null)
 }
 
 Web3Providers.prototype.addWeb3 = function (type, web3) {

libs/remix-lib/src/web3Provider/web3VmProvider.js

@@ -211,12 +211,11 @@ web3VmProvider.prototype.traceTransaction = function (txHash, options, cb) {
       cb(null, this.vmTraces[txHash])
     }
     return this.vmTraces[txHash]
-  } else {
+  }
   if (cb) {
     cb('unable to retrieve traces ' + txHash, null)
   }
 }
-}
 
 web3VmProvider.prototype.storageRangeAt = function (blockNumber, txIndex, address, start, maxLength, cb) { // txIndex is the hash in the case of the VM
   // we don't use the range params here
@@ -232,9 +231,8 @@ web3VmProvider.prototype.storageRangeAt = function (blockNumber, txIndex, addres
       storage: JSON.parse(JSON.stringify(storage)),
       nextKey: null
     })
-  } else {
-    cb('unable to retrieve storage ' + txIndex + ' ' + address)
   }
+  cb('unable to retrieve storage ' + txIndex + ' ' + address)
 }
 
 web3VmProvider.prototype.getBlockNumber = function (cb) { cb(null, 'vm provider') }
@@ -245,12 +243,11 @@ web3VmProvider.prototype.getTransaction = function (txHash, cb) {
       cb(null, this.txs[txHash])
     }
     return this.txs[txHash]
-  } else {
+  }
   if (cb) {
     cb('unable to retrieve tx ' + txHash, null)
   }
 }
-}
 
 web3VmProvider.prototype.getTransactionReceipt = function (txHash, cb) {
   // same as getTransaction but return the created address also
@@ -259,12 +256,11 @@ web3VmProvider.prototype.getTransactionReceipt = function (txHash, cb) {
       cb(null, this.txsReceipt[txHash])
     }
     return this.txsReceipt[txHash]
-  } else {
+  }
   if (cb) {
     cb('unable to retrieve txReceipt ' + txHash, null)
   }
 }
-}
 
 web3VmProvider.prototype.getTransactionFromBlock = function (blockNumber, txIndex, cb) {
   const mes = 'not supposed to be needed by remix in vmmode'