Merge pull request #1050 from ethereum/checkRETURNandREVERT

Check RETURN and REVERT instruction ....

remix-lib/src/helpers/traceHelper.js

@@ -33,6 +33,10 @@ module.exports = {
     return step.op === 'STOP'
   },
 
+  isRevertInstruction: function (step) {
+    return step.op === 'REVERT'
+  },
+
   isSSTOREInstruction: function (step) {
     return step.op === 'SSTORE'
   },

remix-lib/src/trace/traceAnalyser.js

@@ -82,9 +82,12 @@ TraceAnalyser.prototype.buildStorage = function (index, step, context) {
     this.traceCache.pushStoreChanges(index + 1, context.storageContext[context.storageContext.length - 1])
   } else if (traceHelper.isSSTOREInstruction(step)) {
     this.traceCache.pushStoreChanges(index + 1, context.storageContext[context.storageContext.length - 1], step.stack[step.stack.length - 1], step.stack[step.stack.length - 2])
-  } else if (traceHelper.isReturnInstruction(step)) {
+  } else if (traceHelper.isReturnInstruction(step) || traceHelper.isStopInstruction(step)) {
     context.storageContext.pop()
     this.traceCache.pushStoreChanges(index + 1, context.storageContext[context.storageContext.length - 1])
+  } else if (traceHelper.isRevertInstruction(step)) {
+    context.storageContext.pop()
+    this.traceCache.resetStoreChanges()
   }
   return context
 }

remix-lib/src/trace/traceCache.js

@@ -82,6 +82,11 @@ TraceCache.prototype.pushContractCreation = function (token, code) {
   this.contractCreation[token] = code
 }
 
+TraceCache.prototype.resetStoreChanges = function (index, address, key, value) {
+  this.sstore = {}
+  this.storageChanges = []
+}
+
 TraceCache.prototype.pushStoreChanges = function (index, address, key, value) {
   this.sstore[index] = {
     'address': address,