use storageResolver

src/solidity/localDecoder.js

 'use strict'
 
-function solidityLocals (vmtraceIndex, internalTreeCall, stack, memory, storage, currentSourceLocation) {
+function solidityLocals (vmtraceIndex, internalTreeCall, stack, memory, storageResolver, currentSourceLocation) {
   var scope = internalTreeCall.findScope(vmtraceIndex)
   if (!scope) {
     var error = { 'message': 'Can\'t display locals. reason: compilation result might not have been provided' }
@@ -17,7 +17,7 @@ function solidityLocals (vmtraceIndex, internalTreeCall, stack, memory, storage,
         name = '<' + anonymousIncr + '>'
         anonymousIncr++
       }
-      locals[name] = variable.type.decodeFromStack(variable.stackDepth, stack, memory, storage)
+      locals[name] = variable.type.decodeFromStack(variable.stackDepth, stack, memory, storageResolver)
     }
   }
   return locals

src/solidity/stateDecoder.js

@@ -5,14 +5,14 @@ var decodeInfo = require('./decodeInfo')
   * decode the contract state storage
   *
   * @param {Array} storage location  - location of all state variables
-  * @param {Map} storageContent  - storage
+  * @param {Object} storageResolver  - resolve storage queries
   * @return {Map} - decoded state variable
   */
-async function decodeState (stateVars, storageContent) {
+async function decodeState (stateVars, storageResolver) {
   var ret = {}
   for (var k in stateVars) {
     var stateVar = stateVars[k]
-    ret[stateVar.name] = await stateVar.type.decodeFromStorage(stateVar.storagelocation, storageContent)
+    ret[stateVar.name] = await stateVar.type.decodeFromStorage(stateVar.storagelocation, storageResolver)
   }
   return ret
 }

src/solidity/types/ArrayType.js

@@ -24,10 +24,10 @@ class ArrayType extends RefType {
     this.arraySize = arraySize
   }
 
-  async decodeFromStorage (location, storageContent) {
+  async decodeFromStorage (location, storageResolver) {
     var ret = []
     var size = null
-    var slotValue = await util.extractHexValue(location, storageContent, this.storageBytes)
+    var slotValue = await util.extractHexValue(location, storageResolver, this.storageBytes)
     var currentLocation = {
       offset: 0,
       slot: location.slot
@@ -40,7 +40,7 @@ class ArrayType extends RefType {
     }
     var k = util.toBN(0)
     for (; k.lt(size) && k.ltn(300); k.iaddn(1)) {
-      var item = await this.underlyingType.decodeFromStorage(currentLocation, storageContent)
+      var item = await this.underlyingType.decodeFromStorage(currentLocation, storageResolver)
       ret.push(item)
       if (this.underlyingType.storageSlots === 1 && location.offset + this.underlyingType.storageBytes <= 32) {
         currentLocation.offset += this.underlyingType.storageBytes

src/solidity/types/DynamicByteArray.js

@@ -9,19 +9,19 @@ class DynamicByteArray extends RefType {
     super(1, 32, 'bytes', location)
   }
 
-  async decodeFromStorage (location, storageContent) {
-    var value = await util.extractHexValue(location, storageContent, this.storageBytes)
+  async decodeFromStorage (location, storageResolver) {
+    var value = await util.extractHexValue(location, storageResolver, this.storageBytes)
     var bn = new BN(value, 16)
     if (bn.testn(0)) {
       var length = bn.div(new BN(2))
       var dataPos = new BN(helper.sha3(location.slot).replace('0x', ''), 16)
       var ret = ''
-      var currentSlot = await util.readFromStorage(dataPos, storageContent)
+      var currentSlot = await util.readFromStorage(dataPos, storageResolver)
       while (length.gt(ret.length) && ret.length < 32000) {
         currentSlot = currentSlot.replace('0x', '')
         ret += currentSlot
         dataPos = dataPos.add(new BN(1))
-        currentSlot = await util.readFromStorage(dataPos, storageContent)
+        currentSlot = await util.readFromStorage(dataPos, storageResolver)
       }
       return {
         value: '0x' + ret.replace(/(00)+$/, ''),

src/solidity/types/Mapping.js

@@ -6,7 +6,7 @@ class Mapping extends RefType {
     super(1, 32, 'mapping', 'storage')
   }
 
-  async decodeFromStorage (location, storageContent) {
+  async decodeFromStorage (location, storageResolver) {
     return {
       value: '<not implemented>',
       length: '0x',

src/solidity/types/RefType.js

@@ -16,23 +16,20 @@ class RefType {
     * @param {Int} stackDepth - position of the type in the stack
     * @param {Array} stack - stack
     * @param {String} - memory
-    * @param {Object} - storage
+    * @param {Object} - storageResolver
     * @return {Object} decoded value
     */
-  async decodeFromStack (stackDepth, stack, memory, storage) {
+  async decodeFromStack (stackDepth, stack, memory, storageResolver) {
     if (stack.length - 1 < stackDepth) {
       return {
         error: '<decoding failed - stack underflow ' + stackDepth + '>',
         type: this.typeName
       }
     }
-    if (!storage) {
-      storage = {} // TODO this is a fallback, should manage properly locals store in storage
-    }
     var offset = stack[stack.length - 1 - stackDepth]
     if (this.isInStorage()) {
       offset = util.toBN(offset)
-      return await this.decodeFromStorage({ offset: 0, slot: offset }, storage)
+      return await this.decodeFromStorage({ offset: 0, slot: offset }, storageResolver)
     } else if (this.isInMemory()) {
       offset = parseInt(offset, 16)
       return this.decodeFromMemoryInternal(offset, memory)

src/solidity/types/StringType.js

@@ -7,8 +7,8 @@ class StringType extends DynamicBytes {
     this.typeName = 'string'
   }
 
-  async decodeFromStorage (location, storageContent) {
-    var decoded = await super.decodeFromStorage(location, storageContent)
+  async decodeFromStorage (location, storageResolver) {
+    var decoded = await super.decodeFromStorage(location, storageResolver)
     return format(decoded)
   }
 

src/solidity/types/Struct.js

@@ -8,14 +8,14 @@ class Struct extends RefType {
     this.members = memberDetails.members
   }
 
-  async decodeFromStorage (location, storageContent) {
+  async decodeFromStorage (location, storageResolver) {
     var ret = {}
     this.members.map(async (item, i) => {
       var globalLocation = {
         offset: location.offset + item.storagelocation.offset,
         slot: util.add(location.slot, item.storagelocation.slot)
       }
-      ret[item.name] = await item.type.decodeFromStorage(globalLocation, storageContent)
+      ret[item.name] = await item.type.decodeFromStorage(globalLocation, storageResolver)
     })
     return {
       value: ret,

src/solidity/types/ValueType.js

@@ -13,11 +13,11 @@ class ValueType {
     * decode the type with the @arg location from the storage
     *
     * @param {Object} location - containing offset and slot
-    * @param {Object} storageContent - storageContent (storage)
+    * @param {Object} storageResolver  - resolve storage queries
     * @return {Object} - decoded value
     */
-  async decodeFromStorage (location, storageContent) {
-    var value = await util.extractHexValue(location, storageContent, this.storageBytes)
+  async decodeFromStorage (location, storageResolver) {
+    var value = await util.extractHexValue(location, storageResolver, this.storageBytes)
     return {
       value: this.decodeValue(value),
       type: this.typeName

src/solidity/types/util.js

@@ -21,24 +21,26 @@ function decodeIntFromHex (value, byteLength, signed) {
   return bigNumber.toString(10)
 }
 
-async function readFromStorage (slot, storageContent) {
-  var ret
+function readFromStorage (slot, storageResolver) {
   var hexSlot = ethutil.bufferToHex(slot)
   return new Promise((resolve, reject) => {
-    if (storageContent[hexSlot] !== undefined) {
-      ret = storageContent[hexSlot].replace(/^0x/, '')
-    } else {
-      hexSlot = ethutil.bufferToHex(ethutil.setLengthLeft(slot, 32))
-      if (storageContent[hexSlot] !== undefined) {
-        ret = storageContent[hexSlot].replace(/^0x/, '')
+    storageResolver.storageSlot(hexSlot, (error, slot) => {
+      if (error) {
+        return reject(error)
       } else {
-        ret = '000000000000000000000000000000000000000000000000000000000000000'
+        if (!slot) {
+          slot = {
+            key: slot,
+            value: ''
+          }
+        }
+        slot.value = slot.value.replace('0x', '')
+        if (slot.value.length < 64) {
+          slot.value = (new Array(64 - slot.value.length + 1).join('0')) + slot.value
+        }
+        return resolve(slot.value)
       }
-    }
-    if (ret.length < 64) {
-      ret = (new Array(64 - ret.length + 1).join('0')) + ret
-    }
-    return resolve(ret)
+    })
   })
 }
 
@@ -58,11 +60,11 @@ function extractHexByteSlice (slotValue, byteLength, offsetFromLSB) {
  * @returns a hex encoded storage content at the given @arg location. it does not have Ox prefix but always has the full length.
  *
  * @param {Object} location  - object containing the slot and offset of the data to extract.
- * @param {Object} storageContent  - full storage mapping.
+ * @param {Object} storageResolver  - storage resolver
  * @param {Int} byteLength  - Length of the byte slice to extract
  */
-async function extractHexValue (location, storageContent, byteLength) {
-  var slotvalue = await readFromStorage(location.slot, storageContent)
+async function extractHexValue (location, storageResolver, byteLength) {
+  var slotvalue = await readFromStorage(location.slot, storageResolver)
   return extractHexByteSlice(slotvalue, byteLength, location.offset)
 }
 

src/ui/SolidityLocals.js

@@ -6,9 +6,10 @@ var yo = require('yo-yo')
 
 class SolidityLocals {
 
-  constructor (_parent, _traceManager, internalTreeCall) {
+  constructor (_parent, _traceManager, _internalTreeCall, _storageResolver) {
     this.parent = _parent
-    this.internalTreeCall = internalTreeCall
+    this.internalTreeCall = _internalTreeCall
+    this.storageResolver = _storageResolver
     this.traceManager = _traceManager
     this.basicPanel = new DropdownPanel('Solidity Locals', {
       json: true,
@@ -40,12 +41,8 @@ class SolidityLocals {
             var stack = result[0].value
             var memory = result[1].value
             try {
-              this.traceManager.getStorageAt(this.parent.currentStepIndex, this.parent.tx, (error, storage) => {
-                if (!error) {
-                  var locals = localDecoder.solidityLocals(this.parent.currentStepIndex, this.internalTreeCall, stack, memory, storage, sourceLocation)
-                  this.basicPanel.update(locals)
-                }
-              })
+              var locals = localDecoder.solidityLocals(this.parent.currentStepIndex, this.internalTreeCall, stack, memory, this.storageResolver, sourceLocation)
+              this.basicPanel.update(locals)
             } catch (e) {
               warningDiv.innerHTML = e.message
             }

src/ui/SolidityState.js

@@ -4,7 +4,8 @@ var stateDecoder = require('../solidity/stateDecoder')
 var solidityTypeFormatter = require('./SolidityTypeFormatter')
 var yo = require('yo-yo')
 
-function SolidityState (_parent, _traceManager, _codeManager, _solidityProxy) {
+function SolidityState (_parent, _traceManager, _codeManager, _solidityProxy, _storageResolver) {
+  this.storageResolver = _storageResolver
   this.parent = _parent
   this.traceManager = _traceManager
   this.codeManager = _codeManager
@@ -42,7 +43,7 @@ SolidityState.prototype.init = function () {
       return
     }
 
-    self.traceManager.getStorageAt(index, this.parent.tx, function (error, storage) {
+    self.traceManager.getCurrentCalledAddressAt(self.parent.currentStepIndex, (error, result) => {
       if (error) {
         self.basicPanel.update({})
         console.log(error)
@@ -52,7 +53,7 @@ SolidityState.prototype.init = function () {
             self.basicPanel.update({})
             console.log(error)
           } else {
-            stateDecoder.decodeState(stateVars, storage).then((result) => {
+            stateDecoder.decodeState(stateVars, self.storageResolver).then((result) => {
               if (!result.error) {
                 self.basicPanel.update(result)
               }

src/ui/VmDebugger.js

@@ -10,18 +10,20 @@ var StepDetail = require('./StepDetail')
 var DropdownPanel = require('./DropdownPanel')
 var SolidityState = require('./SolidityState')
 var SolidityLocals = require('./SolidityLocals')
+var StorageResolver = require('../storage/storageResolver.js')
 var yo = require('yo-yo')
 
 function VmDebugger (_parent, _traceManager, _codeManager, _solidityProxy, _callTree) {
+  var storageResolver = new StorageResolver(_parent, _traceManager)
   this.asmCode = new CodeListView(_parent, _codeManager)
   this.stackPanel = new StackPanel(_parent, _traceManager)
-  this.storagePanel = new StoragePanel(_parent, _traceManager)
+  this.storagePanel = new StoragePanel(_parent, _traceManager, storageResolver)
   this.memoryPanel = new MemoryPanel(_parent, _traceManager)
   this.calldataPanel = new CalldataPanel(_parent, _traceManager)
   this.callstackPanel = new CallstackPanel(_parent, _traceManager)
   this.stepDetail = new StepDetail(_parent, _traceManager)
-  this.solidityState = new SolidityState(_parent, _traceManager, _codeManager, _solidityProxy)
-  this.solidityLocals = new SolidityLocals(_parent, _traceManager, _callTree)
+  this.solidityState = new SolidityState(_parent, _traceManager, _codeManager, _solidityProxy, storageResolver)
+  this.solidityLocals = new SolidityLocals(_parent, _traceManager, _callTree, storageResolver)
 
   /* Return values - */
   this.returnValuesPanel = new DropdownPanel('Return Value', {json: true})
@@ -38,7 +40,7 @@ function VmDebugger (_parent, _traceManager, _codeManager, _solidityProxy, _call
   })
   /* Return values - */
 
-  this.fullStoragesChangesPanel = new FullStoragesChangesPanel(_parent, _traceManager)
+  this.fullStoragesChangesPanel = new FullStoragesChangesPanel(_parent, _traceManager, storageResolver)
 
   this.view
   var self = this