Migrate runCall to typescript (ethereumjs#510)

s1na · web-flow · commit acd56bfd5a17 · 2019-05-17T11:46:08.000+02:00
* Change runCall filetype to ts

* Migrate runCall to ts
diff --git a/lib/index.ts b/lib/index.ts
@@ -3,6 +3,7 @@ import { StateManager } from './state'
 import Common from 'ethereumjs-common'
 import Account from 'ethereumjs-account'
 import { default as runCode, RunCodeOpts, RunCodeCb } from './runCode'
+import { default as runCall, RunCallOpts, RunCallCb } from './runCall'
 const promisify = require('util.promisify')
 const AsyncEventEmitter = require('async-eventemitter')
 const Blockchain = require('ethereumjs-blockchain')
@@ -71,10 +72,13 @@ export default class VM extends AsyncEventEmitter {
     this.runJIT = require('./runJit.js').bind(this)
     this.runBlock = require('./runBlock.js').bind(this)
     this.runTx = require('./runTx.js').bind(this)
-    this.runCall = require('./runCall.js').bind(this)
     this.runBlockchain = require('./runBlockchain.js').bind(this)
   }
 
+  runCall (opts: RunCallOpts, cb: RunCallCb): void {
+    runCall.bind(this)(opts, cb)
+  }
+
   runCode (opts: RunCodeOpts, cb: RunCodeCb): void {
     runCode.bind(this)(opts, cb)
   }
diff --git a/lib/runCall.js b/lib/runCall.js
diff --git a/lib/runCall.ts b/lib/runCall.ts
@@ -0,0 +1,73 @@
+import BN = require('bn.js')
+import { zeros } from 'ethereumjs-util'
+import VM from './index'
+import { StorageReader } from './state'
+import TxContext from './evm/txContext'
+import Message from './evm/message'
+import { default as Interpreter, InterpreterResult } from './evm/interpreter'
+const Block = require('ethereumjs-block')
+
+export interface RunCallOpts {
+  block?: any
+  storageReader?: StorageReader
+  gasPrice?: Buffer
+  origin?: Buffer
+  caller?: Buffer
+  gasLimit?: Buffer
+  to?: Buffer
+  value?: Buffer
+  data?: Buffer
+  code?: Buffer
+  depth?: number
+  compiled?: boolean
+  static?: boolean
+  salt?: Buffer
+  selfdestruct?: {[k: string]: boolean}
+  delegatecall?: boolean
+}
+
+export interface RunCallCb {
+  (err: Error | null, results: InterpreterResult | null): void
+}
+
+/**
+ * runs a CALL operation
+ * @method vm.runCall
+ * @private
+ * @param opts
+ * @param opts.block {Block}
+ * @param opts.caller {Buffer}
+ * @param opts.code {Buffer} this is for CALLCODE where the code to load is different than the code from the to account.
+ * @param opts.data {Buffer}
+ * @param opts.gasLimit {Buffer | BN.js }
+ * @param opts.gasPrice {Buffer}
+ * @param opts.origin {Buffer} []
+ * @param opts.to {Buffer}
+ * @param opts.value {Buffer}
+ * @param {Function} cb the callback
+ */
+export default function runCall (this: VM, opts: RunCallOpts, cb: RunCallCb): void {
+  const block = opts.block || new Block()
+  const storageReader = opts.storageReader || new StorageReader(this.stateManager)
+
+  const txContext = new TxContext(opts.gasPrice || Buffer.alloc(0), opts.origin || opts.caller || zeros(32))
+  const message = new Message({
+    caller: opts.caller,
+    gasLimit: opts.gasLimit ? new BN(opts.gasLimit) : new BN(0xffffff),
+    to: opts.to && opts.to.toString('hex') !== '' ? opts.to : undefined,
+    value: opts.value,
+    data: opts.data,
+    code: opts.code,
+    depth: opts.depth || 0,
+    isCompiled: opts.compiled || false,
+    isStatic: opts.static || false,
+    salt: opts.salt || null,
+    selfdestruct: opts.selfdestruct || {},
+    delegatecall: opts.delegatecall || false
+  })
+
+  const interpreter = new Interpreter(this, txContext, block, storageReader)
+  interpreter.executeMessage(message)
+    .then((results) => cb(null, results))
+    .catch((err) => cb(err, null))
+}
