move execution txExecution to Remix-Lib

remix-lib/index.js

@@ -18,6 +18,7 @@ var themeChooser = require('./src/ui/theme-chooser')
 var Storage = require('./src/storage')
 
 var EventsDecoder = require('./src/execution/eventsDecoder')
+var txExecution = require('./src/execution/txExecution')
 
 if (typeof (module) !== 'undefined' && typeof (module.exports) !== 'undefined') {
   module.exports = modules()
@@ -53,7 +54,8 @@ function modules () {
       themeChooser: themeChooser
     },
     execution: {
-      EventsDecoder: EventsDecoder
+      EventsDecoder: EventsDecoder,
+      txExecution: txExecution
     }
   }
 }

remix-lib/src/execution/txExecution.js

@@ -0,0 +1,76 @@
+'use strict'
+
+module.exports = {
+  /**
+    * deploy the given contract
+    *
+    * @param {String} data    - data to send with the transaction ( return of txFormat.buildData(...) ).
+    * @param {Object} udap    - udapp.
+    * @param {Function} callback    - callback.
+    */
+  createContract: function (data, udapp, callback) {
+    udapp.runTx({data: data, useCall: false}, (error, txResult) => {
+      // see universaldapp.js line 660 => 700 to check possible values of txResult (error case)
+      callback(error, txResult)
+    })
+  },
+
+  /**
+    * call the current given contract
+    *
+    * @param {String} to    - address of the contract to call.
+    * @param {String} data    - data to send with the transaction ( return of txFormat.buildData(...) ).
+    * @param {Object} funAbi    - abi definition of the function to call.
+    * @param {Object} udap    - udapp.
+    * @param {Function} callback    - callback.
+    */
+  callFunction: function (to, data, funAbi, udapp, callback) {
+    udapp.runTx({to: to, data: data, useCall: funAbi.constant}, (error, txResult) => {
+      // see universaldapp.js line 660 => 700 to check possible values of txResult (error case)
+      callback(error, txResult)
+    })
+  },
+
+  /**
+    * check if the vm has errored
+    *
+    * @param {Object} txResult    - the value returned by the vm
+    * @return {Object} -  { error: true/false, message: DOMNode }
+    */
+  checkVMError: function (txResult) {
+    var errorCode = {
+      OUT_OF_GAS: 'out of gas',
+      STACK_UNDERFLOW: 'stack underflow',
+      STACK_OVERFLOW: 'stack overflow',
+      INVALID_JUMP: 'invalid JUMP',
+      INVALID_OPCODE: 'invalid opcode',
+      REVERT: 'revert',
+      STATIC_STATE_CHANGE: 'static state change'
+    }
+    var ret = {
+      error: false,
+      message: ''
+    }
+    if (!txResult.result.vm.exceptionError) {
+      return ret
+    }
+    var error = `VM error: ${txResult.result.vm.exceptionError}.\n`
+    var msg
+    if (txResult.result.vm.exceptionError === errorCode.INVALID_OPCODE) {
+      msg = `\t\n\tThe execution might have thrown.\n`
+      ret.error = true
+    } else if (txResult.result.vm.exceptionError === errorCode.OUT_OF_GAS) {
+      msg = `\tThe transaction ran out of gas. Please increase the Gas Limit.\n`
+      ret.error = true
+    } else if (txResult.result.vm.exceptionError === errorCode.REVERT) {
+      msg = `\tThe transaction has been reverted to the initial state.\nNote: The constructor should be payable if you send value.`
+      ret.error = true
+    } else if (txResult.result.vm.exceptionError === errorCode.STATIC_STATE_CHANGE) {
+      msg = `\tState changes is not allowed in Static Call context\n`
+      ret.error = true
+    }
+    ret.message = `${error}${txResult.result.vm.exceptionError}${msg}\tDebug the transaction to get more information.`
+    return ret
+  }
+}
+