contract creation code

src/asmCode.js

@@ -67,22 +67,37 @@ module.exports = React.createClass({
         code: ['loading...']
       })
       var self = this
+      if (address.indexOf('(Contract Creation Code)') !== -1) {
+        this.context.traceManager.getContractCreationCode(address, function (error, hexCode) {
+          if (error) {
+            console.log(error)
+          } else {
+            var codes = codeResolver.cacheExecutingCode(address, hexCode)
+            self.updateCode(codes.code, address, currentStep)
+          }
+        })
+      } else {
         codeResolver.resolveCode(address, currentStep, this.context.tx, function (address, code) {
           if (window.ethDebuggerSelectedItem !== currentStep) {
             console.log(currentStep + ' discarded. current is ' + window.ethDebuggerSelectedItem)
             return
           }
-        self.setState({
-          code: code,
-          address: address
-        })
-        self.setInstructionIndex(address, currentStep)
+          self.updateCode(code, address, currentStep)
         })
+      }
     } else {
       this.setInstructionIndex(this.state.address, currentStep)
     }
   },
 
+  updateCode: function (code, address, currentStep) {
+    this.setState({
+      code: code,
+      address: address
+    })
+    this.setInstructionIndex(address, currentStep)
+  },
+
   setInstructionIndex: function (address, step) {
     var self = this
     this.context.traceManager.getCurrentPC(step, function (error, instIndex) {

src/codeResolver.js

@@ -18,11 +18,6 @@ module.exports = {
       return
     }
 
-    if (address === '(Contract Creation Code)') { // start of the trace
-      callBack(address, this.cacheExecutingCode(address, transaction.input).code)
-      return
-    }
-
     var self = this
     this.loadCode(address, function (code) {
       callBack(address, self.cacheExecutingCode(address, code).code)
@@ -42,8 +37,8 @@ module.exports = {
 
   cacheExecutingCode: function (address, hexCode) {
     var codes = this.formatCode(hexCode)
-    this.codes[address] = codes[0]
-    this.instructionsIndexByBytesOffset[address] = codes[1]
+    this.codes[address] = codes.code
+    this.instructionsIndexByBytesOffset[address] = codes.instructionsIndexByBytesOffset
     return codes
   },
 

src/stepManager.js

@@ -64,18 +64,27 @@ module.exports = React.createClass({
   },
 
   sliderMoved: function (step) {
+    if (step >= this.state.traceLength || step < 0) {
+      return
+    }
     this.props.onStepChanged(step)
     this.changeState(step)
   },
 
   stepIntoForward: function () {
     var step = this.state.currentStepIndex + 1
+    if (step >= this.state.traceLength || step < 0) {
+      return
+    }
     this.props.onStepChanged(step)
     this.changeState(step)
   },
 
   stepIntoBack: function () {
     var step = this.state.currentStepIndex - 1
+    if (step >= this.state.traceLength || step < 0) {
+      return
+    }
     this.props.onStepChanged(step)
     this.refs.slider.setValue(step)
     this.changeState(step)
@@ -83,6 +92,9 @@ module.exports = React.createClass({
 
   stepOverForward: function () {
     var step = this.context.traceManager.findStepOverForward(this.state.currentStepIndex)
+    if (step >= this.state.traceLength || step < 0) {
+      return
+    }
     this.props.onStepChanged(step)
     this.refs.slider.setValue(step)
     this.changeState(step)
@@ -90,6 +102,9 @@ module.exports = React.createClass({
 
   stepOverBack: function () {
     var step = this.context.traceManager.findStepOverBack(this.state.currentStepIndex)
+    if (step >= this.state.traceLength || step < 0) {
+      return
+    }
     this.props.onStepChanged(step)
     this.refs.slider.setValue(step)
     this.changeState(step)
@@ -97,6 +112,9 @@ module.exports = React.createClass({
 
   jumpToNextCall: function () {
     var step = this.context.traceManager.findNextCall(this.state.currentStepIndex)
+    if (step >= this.state.traceLength || step < 0) {
+      return
+    }
     this.props.onStepChanged(step)
     this.refs.slider.setValue(step)
     this.changeState(step)

src/traceAnalyser.js

@@ -6,19 +6,22 @@ function TraceAnalyser (_cache) {
   this.trace = null
 }
 
-TraceAnalyser.prototype.analyse = function (trace, root, callback) {
+TraceAnalyser.prototype.analyse = function (trace, tx, callback) {
   this.trace = trace
-
-  this.traceCache.pushStoreChanges(0, root)
+  this.traceCache.pushStoreChanges(0, tx.to)
   var context = {
-    currentStorageAddress: root,
-    previousStorageAddress: root
+    currentStorageAddress: tx.to,
+    previousStorageAddress: tx.to
   }
-  var callStack = [root]
+  var callStack = [tx.to]
   this.traceCache.pushCallStack(0, {
     callStack: callStack.slice(0)
   })
 
+  if (tx.to === '(Contract Creation Code)') {
+    this.traceCache.pushContractCreation(tx.to, tx.input)
+  }
+
   for (var k = 0; k < this.trace.length; k++) {
     var step = this.trace[k]
     this.buildCalldata(k, step)
@@ -61,26 +64,30 @@ TraceAnalyser.prototype.buildStorage = function (index, step, context) {
 
 TraceAnalyser.prototype.buildDepth = function (index, step, callStack) {
   if (traceManagerUtil.isCallInstruction(step) && !traceManagerUtil.isCallToPrecompiledContract(index, this.trace)) {
+    if (traceManagerUtil.isCreateInstruction(step)) {
+      var contractToken = '(Contract Creation Code) ' + index
+      callStack.push(contractToken)
+      var lastMemoryChange = this.traceCache.memoryChanges[this.traceCache.memoryChanges.length - 1]
+      this.traceCache.pushContractCreationFromMemory(index, contractToken, this.trace, lastMemoryChange)
+    } else {
       var newAddress = traceManagerUtil.resolveCalledAddress(index, this.trace)
       if (newAddress) {
         callStack.push(newAddress)
       } else {
         console.log('unable to build depth changes. ' + index + ' does not match with a CALL. depth changes will be corrupted')
       }
+    }
     this.traceCache.pushCallChanges(step, index + 1)
     this.traceCache.pushCallStack(index + 1, {
       callStack: callStack.slice(0)
     })
   } else if (traceManagerUtil.isReturnInstruction(step)) {
-    this.traceCache.pushCallChanges(step, index)
-    this.traceCache.pushCallStack(index, {
+    callStack.pop()
+    this.traceCache.pushCallChanges(step, index + 1)
+    this.traceCache.pushCallStack(index + 1, {
       callStack: callStack.slice(0)
     })
-    callStack.pop()
   }
 }
 
-// 0x90a99e9dbfc38ce0fd6330f97a192a9ef27b8329b57309e8b2abe47a6fe74574
-// 0xc0e95f27e1482ba09dea8162c4b4090e3d89e214416df2ce9d5517ff2107de19
-
 module.exports = TraceAnalyser

src/traceCache.js

@@ -9,6 +9,7 @@ TraceCache.prototype.init = function () {
   this.callChanges = []
   this.returnChanges = []
   this.calls = {}
+  this.contractCreation = {}
 
   this.callDataChanges = []
   this.memoryChanges = []
@@ -32,6 +33,18 @@ TraceCache.prototype.pushCallChanges = function (step, value) {
   }
 }
 
+TraceCache.prototype.pushContractCreationFromMemory = function (index, token, trace, lastMemoryChange) {
+  var memory = trace[lastMemoryChange].memory
+  var stack = trace[index].stack
+  var offset = 2 * parseInt(stack[stack.length - 2], 16)
+  var size = 2 * parseInt(stack[stack.length - 3], 16)
+  this.contractCreation[token] = '0x' + memory.substr(offset, size)
+}
+
+TraceCache.prototype.pushContractCreation = function (token, code) {
+  this.contractCreation[token] = code
+}
+
 TraceCache.prototype.pushReturnChanges = function (value) {
   this.returnChanges.push(value)
 }

src/traceManager.js

@@ -30,7 +30,7 @@ TraceManager.prototype.resolveTrace = function (tx, callback) {
     } else {
       if (result.structLogs.length > 0) {
         self.trace = result.structLogs
-        self.traceAnalyser.analyse(result.structLogs, tx.to, function (error, result) {
+        self.traceAnalyser.analyse(result.structLogs, tx, function (error, result) {
           if (error) {
             console.log(error)
             callback(false)
@@ -146,10 +146,6 @@ TraceManager.prototype.getCurrentCalledAddressAt = function (stepIndex, callback
       if (addressIndex === 0) {
         callback(null, self.tx.to)
       } else {
-        var step = this.trace[addressIndex]
-        if (traceManagerUtil.isCreateInstruction(step)) {
-          callback(null, '(Contract Creation Code)')
-        } else {
         var callStack = self.traceCache.callStack[addressIndex].callStack
         var calledAddress = callStack[callStack.length - 1]
         if (calledAddress) {
@@ -159,10 +155,17 @@ TraceManager.prototype.getCurrentCalledAddressAt = function (stepIndex, callback
         }
       }
     }
-    }
   })
 }
 
+TraceManager.prototype.getContractCreationCode = function (token, callback) {
+  if (this.traceCache.contractCreation[token]) {
+    callback(null, this.traceCache.contractCreation[token])
+  } else {
+    callback('no contract creation named ' + token, null)
+  }
+}
+
 TraceManager.prototype.getMemoryAt = function (stepIndex, callback) {
   if (stepIndex >= this.trace.length) {
     callback('trace smaller than requested', null)

src/txBrowser.js

@@ -12,7 +12,7 @@ module.exports = React.createClass({
   },
 
   getInitialState: function () {
-    return {blockNumber: '1000110', txNumber: '0x71a6d583d16d142c5c3e8903060e8a4ee5a5016348a9448df6c3e63b68076ec4', from: '', to: '', hash: ''}
+    return {blockNumber: '1000110', txNumber: '0x50a420e75151e7f04a014019598764102675e0c6c8979f1089690c594cbe871c', from: '', to: '', hash: ''}
   },
 
   // creation 0xa9619e1d0a35b2c1d686f5b661b3abd87f998d2844e8e9cc905edb57fc9ce349