Merge branch 'master' into EthTime

LICENSE-MIT

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2018 Status Research & Development GmbH
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -1,6 +1,9 @@
 # Nimbus
 
-[![Build Status](https://travis-ci.org/status-im/nimbus.svg?branch=master)](https://travis-ci.org/status-im/nimbus)
+[![Build Status (Travis)](https://img.shields.io/travis/status-im/nimbus/master.svg?label=Linux%20/%20macOS "Linux/macOS build status (Travis)")](https://travis-ci.org/status-im/nimbus)
+[![Windows build status (Appveyor)](https://img.shields.io/appveyor/ci/jarradh/nimbus/master.svg?label=Windows "Windows build status (Appveyor)")](https://ci.appveyor.com/project/jarradh/nimbus)[![License: Apache](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
+[![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](https://opensource.org/licenses/MIT)
+![Stability: experimental](https://img.shields.io/badge/stability-experimental-orange.svg)
 
 An Ethereum 2.0 Sharding Client for Resource-Restricted Devices
 
@@ -12,3 +15,12 @@ Join the Status community chats:
 Rationale
 
 https://docs.google.com/document/d/14u65XVNLOd83cq3t7wNC9UPweZ6kPWvmXwRTWWn0diQ/edit#
+
+## License
+
+Licensed under either of
+
+ * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+at your option.

appveyor.yml

@@ -0,0 +1,47 @@
+version: '{build}'
+
+cache:
+- x86_64-4.9.2-release-win32-seh-rt_v4-rev4.7z
+- i686-4.9.2-release-win32-dwarf-rt_v4-rev4.7z
+
+matrix:
+  fast_finish: true     # set this flag to immediately finish build once one of the jobs fails.
+
+environment:
+
+  matrix:
+    - MINGW_DIR: mingw32
+      MINGW_URL: https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win32/Personal%20Builds/mingw-builds/4.9.2/threads-win32/dwarf/i686-4.9.2-release-win32-dwarf-rt_v4-rev4.7z/download
+      MINGW_ARCHIVE: i686-4.9.2-release-win32-dwarf-rt_v4-rev4.7z
+      platform: x86
+    - MINGW_DIR: mingw64
+      MINGW_URL: https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/mingw-builds/4.9.2/threads-win32/seh/x86_64-4.9.2-release-win32-seh-rt_v4-rev4.7z/download
+      MINGW_ARCHIVE: x86_64-4.9.2-release-win32-seh-rt_v4-rev4.7z
+      platform: x64
+
+install:
+  - setlocal EnableExtensions EnableDelayedExpansion
+  - IF not exist "%MINGW_ARCHIVE%" appveyor DownloadFile "%MINGW_URL%" -FileName "%MINGW_ARCHIVE%"
+  - 7z x -y "%MINGW_ARCHIVE%" > nul
+  - SET PATH=%CD%\%MINGW_DIR%\bin;%CD%\Nim\bin;%PATH%
+  - git clone https://github.com/nim-lang/Nim.git
+  - cd %CD%\Nim
+  - git remote add statusim https://github.com/status-im/Nim.git
+  - git fetch statusim
+  - git config --global user.email "you@example.com"
+  - git config --global user.name "Your Name"
+  - for /f "tokens=*" %%G IN ('git branch -a --list ^"statusim/status-autopatch-*^"') DO (git merge %%G)
+  - git clone --depth 1 https://github.com/nim-lang/csources
+  - cd csources
+  - IF "%PLATFORM%" == "x64" ( build64.bat ) else ( build.bat )
+  - cd ..
+  - bin\nim c koch
+  - koch boot -d:release
+  - koch nimble
+build_script:
+  - cd C:\projects\nimbus
+  - nimble install -y
+test_script:
+  - nimble test
+
+deploy: off

src/account.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   constants, errors, ttmath, rlp
 

src/block_obj.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   logging, constants, utils / header, ttmath
 

src/chain.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   tables, ttmath,
   logging, constants, errors, validation, utils / hexadecimal, vm / base, db / db_chain

src/computation.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat, strutils, sequtils, tables, macros, ttmath, terminal,
   constants, errors, utils/hexadecimal, utils_numeric, validation, vm_state, logging, opcode_values, types,

src/db/backends/memory_backend.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import tables, ttmath
 
 type

src/db/db_chain.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import strformat, tables, ttmath, state_db, backends / memory_backend
 
 type
@@ -23,7 +30,7 @@ proc `$`*(db: BaseChainDB): string =
 
 # proc getCanonicalBlockHeaderByNumber*(self: BaseChainDB; blockNumber: int): BlockHeader =
 #   ##         Returns the block header with the given number in the canonical chain.
-#   ## 
+#   ##
 #   ##         Raises BlockNotFound if there's no block header with the given number in the
 #   ##         canonical chain.
 #   validateUint256(blockNumber)
@@ -59,7 +66,7 @@ proc `$`*(db: BaseChainDB): string =
 
 # proc getBlockHeaderByHash*(self: BaseChainDB; blockHash: cstring): BlockHeader =
 #   ##         Returns the requested block header as specified by block hash.
-#   ## 
+#   ##
 #   ##         Raises BlockNotFound if it is not present in the db.
 #   validateWord(blockHash)
 #   try:
@@ -90,7 +97,7 @@ proc `$`*(db: BaseChainDB): string =
 #       yield rlp.decode(receiptData)
 #     else:
 #       break
-  
+
 # iterator getBlockTransactions*(self: BaseChainDB; blockHeader: BlockHeader;
 #                               transactionClass: typedesc): FrontierTransaction =
 #   var transactionDb = HexaryTrie(self.db)
@@ -101,7 +108,7 @@ proc `$`*(db: BaseChainDB): string =
 #       yield rlp.decode(transactionData)
 #     else:
 #       break
-  
+
 # proc addBlockNumberToHashLookup*(self: BaseChainDB; header: BlockHeader): void =
 #   var blockNumberToHashKey = makeBlockNumberToHashLookupKey(header.blockNumber)
 #   self.db.set(blockNumberToHashKey, rlp.encode(header.hash))

src/db/state_db.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat, tables,
   ../constants, ../errors, ../validation, ../account, ../logging, ../utils_numeric, .. / utils / [padding, bytes, keccak], ttmath, rlp
@@ -13,7 +20,7 @@ proc newAccountStateDB*(db: Table[string, string], readOnly: bool = false): Acco
 proc logger*(db: AccountStateDB): Logger =
   logging.getLogger("db.State")
 
-proc getAccount(db: AccountStateDB, address: string): Account = 
+proc getAccount(db: AccountStateDB, address: string): Account =
   # let rlpAccount = db.trie[address]
   # if not rlpAccount.isNil:
   #   account = rlp.decode[Account](rlpAccount)
@@ -24,7 +31,7 @@ proc getAccount(db: AccountStateDB, address: string): Account =
 
 proc setAccount(db: AccountStateDB, address: string, account: Account) =
   # db.trie[address] = rlp.encode[Account](account)
-  discard # TODO 
+  discard # TODO
 
 
 proc getCodeHash*(db: AccountStateDB, address: string): string =
@@ -51,7 +58,7 @@ proc setStorage*(db: var AccountStateDB, address: string, slot: UInt256, value:
   #validateGte(value, 0, title="Storage Value")
   #validateGte(slot, 0, title="Storage Slot")
   validateCanonicalAddress(address, title="Storage Address")
-  
+
   # TODO
   # let account = db.getAccount(address)
   # var storage = HashTrie(HexaryTrie(self.db, account.storageRoot))
@@ -71,11 +78,11 @@ proc setStorage*(db: var AccountStateDB, address: string, slot: UInt256, value:
 proc getStorage*(db: var AccountStateDB, address: string, slot: UInt256): (UInt256, bool) =
   validateCanonicalAddress(address, title="Storage Address")
   #validateGte(slot, 0, title="Storage Slot")
-  
+
   # TODO
   # make it more correct
   # for now, we just use a table
-  
+
   # let account = db.GetAccount(address)
   # var storage = HashTrie(HexaryTrie(self.db, account.storageRoot))
 

src/errors.nim

@@ -1,10 +1,17 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 type
   EVMError* = object of Exception
     ## Base error class for all evm errors.
 
   VMNotFound* = object of EVMError
     ## No VM available for the provided block number.
-  
+
   BlockNotFound* = object of EVMError
     ## The block with the given number/hash does not exist.
 

src/lightchain_shell.nim

@@ -1 +1,8 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 # not implemented

src/logging.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import strformat, terminal
 
 type

src/logic/arithmetic.nim

@@ -1,4 +1,11 @@
-import 
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
+import
   ../constants, ../utils_numeric, ../computation, ../types,
   .. / vm / [gas_meter, stack], ../opcode, ../opcode_values,
   helpers, ttmath, strutils
@@ -6,7 +13,7 @@ import
 proc add*(computation: var BaseComputation) =
   # Addition
   var (left, right) = computation.stack.popInt(2)
-  
+
   var res = (left + right) and UINT_256_MAX
   pushRes()
 
@@ -79,7 +86,7 @@ proc sdiv*(computation: var BaseComputation) =
 proc exp*(computation: var BaseComputation) =
   # Exponentiation
   let (base, exponent) = computation.stack.popInt(2)
-  
+
   var gasCost = GAS_EXP_BYTE.u256
   #if exponent != 0:
   #  gasCost += GAS_EXP_BYTE * (1 + log256(exponent))

src/logic/block.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   ../constants, ../computation, ../vm/stack, ../vm_state, ttmath
 

src/logic/block_ops.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   ../constants, ../errors, ../computation, ../vm_state, ../types, .. / vm / [stack], ttmath
 

src/logic/call.nim

@@ -1,6 +1,13 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat,
-  ../constants, ../types, ../errors, ../computation, ../opcode, ../opcode_values, ../logging, 
+  ../constants, ../types, ../errors, ../computation, ../opcode, ../opcode_values, ../logging,
   .. / vm / [stack, memory, gas_meter, message],
   .. / utils / [address, bytes],
   ttmath
@@ -87,7 +94,7 @@ method runLogic*(call: BaseCall, computation) =
     #     else:
     #         code = state_db.get_code(to)
     let code = ""
-    
+
     let childMsg = computation.prepareChildMessage(
       childMsgGas,
       to,
@@ -96,7 +103,7 @@ method runLogic*(call: BaseCall, computation) =
       code,
       MessageOptions(
         shouldTransferValue: shouldTransferValue,
-        isStatic: isStatic))        
+        isStatic: isStatic))
     if not sender.isNil:
       childMsg.sender = sender
     # let childComputation = computation.applyChildComputation(childMsg)
@@ -120,7 +127,7 @@ method msgExtraGas(call: Call, computation; gas: UInt256, to: string, value: UIn
   # with computation.vm_state.state_db(read_only=True) as state_db:
   #  let accountExists = db.accountExists(to)
   let accountExists = false
-  
+
   let transferGasFee = if value != 0: GAS_CALL_VALUE else: 0.u256
   let createGasFee = if not accountExists: GAS_NEW_ACCOUNT else: 0.u256
   transferGasFee + createGasFee

src/logic/comparison.nim

@@ -1,9 +1,16 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   ../constants, ../utils_numeric, ../computation, ../vm/stack, ../types,
   helpers, ttmath
 
 quasiBoolean(lt, `<`) # Lesser Comparison
-    
+
 quasiBoolean(gt, `>`) # Greater Comparison
 
 quasiBoolean(slt, `<`, signed=true) # Signed Lesser Comparison

src/logic/context.nim

@@ -1,6 +1,13 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat,
-  ../constants, ../types, ../errors, ../utils_numeric, ../computation, ../vm_state, ../account, ../db/state_db, ../validation, 
+  ../constants, ../types, ../errors, ../utils_numeric, ../computation, ../vm_state, ../account, ../db/state_db, ../validation,
   .. / vm / [stack, message, gas_meter, memory, code_stream], .. / utils / [address, padding, bytes], ttmath
 
 proc balance*(computation: var BaseComputation) =
@@ -106,10 +113,10 @@ proc returnDataSize*(computation: var BaseComputation) =
 proc returnDataCopy*(computation: var BaseComputation) =
   let (memStartPosition, returnDataStartPosition, size) = computation.stack.popInt(3)
   if returnDataStartPosition + size > computation.returnData.len:
-    raise newException(OutOfBoundsRead, 
+    raise newException(OutOfBoundsRead,
       "Return data length is not sufficient to satisfy request.  Asked \n" &
       &"for data from index {returnDataStartPosition} to {returnDataStartPosition + size}. Return data is {computation.returnData.len} in \n" &
-      "length")      
+      "length")
 
   computation.extendMemory(memStartPosition, size)
   let wordCount = ceil32(size) div 32

src/logic/duplication.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   macros, strformat,
   ../types, ../computation, ../vm/stack

src/logic/flow.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat, ttmath,
   ../constants, ../types, ../opcode_values, ../logging, ../errors, ../computation, .. /vm / [code_stream, stack]

src/logic/helpers.nim

@@ -1,6 +1,12 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import macros
 
-  
 macro pushRes*: untyped =
   let resNode = ident("res")
   result = quote:
@@ -30,6 +36,6 @@ macro quasiBoolean*(name: untyped, op: untyped, signed: untyped = nil, nonzero:
     proc `name`*(computation: var BaseComputation) =
       var (`leftNode`, `rightNode`) = computation.stack.popInt(2)
       `signedNode`
-      
+
       var `resNode` = if `test`: 1.u256 else: 0.u256
       computation.stack.push(`resNode`)

src/logic/invalid.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   ../errors, ../types, ../computation
 

src/logic/logging_ops.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat, macros,
   ../constants, ../errors, ../types, ../computation, .. / vm / [stack, memory, gas_meter, message], .. / utils / bytes, ttmath

src/logic/memory_ops.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   ../constants, ../computation, ../types, .. / vm / [stack, memory], .. / utils / [padding, bytes]
 
@@ -14,7 +21,7 @@ proc mstoreX(computation; x: int) =
 
   let paddedValue = padLeft(value, x, 0.byte)
   let normalizedValue = paddedValue[^x .. ^1]
-  
+
   extendMemory(start, x.u256)
   memory.write(start, 32.u256, normalizedValue)
 

src/logic/sha3.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   ../constants, ../utils_numeric, .. / utils / [keccak, bytes], .. / vm / [stack, memory, gas_meter], ../computation, ../types, helpers, ttmath
 

src/logic/stack_ops.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat, macros, sequtils,
   ../types, ../constants, ../errors, ../computation, .. / vm / [stack, code_stream], .. / utils / [padding, bytes], ttmath

src/logic/storage.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   ../constants, ../types, ../errors, ../computation, ../vm_state,
   ../utils/header,

src/logic/swap.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   macros, strformat,
   ../types, ../computation, ../vm/stack

src/logic/system_ops.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat,
   ../constants, ../types, ../errors, ../computation, ../opcode, ../opcode_values, ../logging, ../vm_state, call,

src/opcode.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat, strutils, sequtils, macros,
   constants, logging, errors, types, opcode_values, computation, vm/stack, ttmath
@@ -63,6 +70,6 @@ macro initOpcodes*(spec: untyped): untyped =
         quote:
           `value`[`op`] = Opcode(kind: `op`, gasCostConstant: `gasCost`, runLogic: `handler`)
       result[1].add(opcode)
-  
+
   result[1].add(value)
 

src/opcode_table.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat, strutils, tables, macros,
   constants, ttmath, errors, logging, vm_state,
@@ -32,7 +39,7 @@ var OPCODE_TABLE* = initOpcodes:
   Op.Not:           GAS_VERY_LOW        notOp
   Op.Byte:          GAS_VERY_LOW        byteOp
 
-  
+
   # sha3
   Op.SHA3:          GAS_SHA3            sha3op
 
@@ -59,7 +66,7 @@ var OPCODE_TABLE* = initOpcodes:
   Op.Number:        GAS_BASE            number
   Op.Difficulty:    GAS_BASE            difficulty
   Op.GasLimit:      GAS_BASE            gaslimit
-  
+
 
   # stack
   Op.Pop:           GAS_BASE            stack_ops.pop

src/opcode_values.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 type
   Op* {.pure.} = enum
     STOP = 0x0,    # 0
@@ -26,7 +33,7 @@ type
     BYTE,          # 26
 
     SHA3 = 0x20,   # 32
-    
+
     ADDRESS = 0x30,# 48
     BALANCE,       # 49
     ORIGIN,        # 50
@@ -59,7 +66,7 @@ type
     DIFFICULTY,    # 68
 
     GASLIMIT,      # 69
-    
+
     POP = 0x50,    # 80
 
     MLOAD,         # 81
@@ -79,7 +86,7 @@ type
     GAS,           # 90
 
     JUMPDEST,      # 91
-    
+
     PUSH1 = 0x60,  # 96
     PUSH2,         # 97
     PUSH3,         # 98

src/runner.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat, strutils, tables, macros,
   constants, ttmath, errors, logging, vm_state, opcode_table,

src/transaction.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   constants, ttmath, errors
 
@@ -33,4 +40,4 @@ proc validate*(t: BaseTransaction) =
 
 proc sender*(t: BaseTransaction): string =
   # TODO
-  ""
+  ""

src/types.nim

@@ -1,6 +1,13 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   tables,
-  constants, vm_state, 
+  constants, vm_state,
   opcode_values, ttmath,
   vm / [code_stream, gas_meter, memory, message, stack]
 
@@ -37,6 +44,6 @@ type
     ## that's what parity does:
     ##   it uses the peek methods of the stack and calculates the cost
     ##   then it actually pops/pushes stuff in exec
-    ## I followed the py-evm approach which does that in opcode logic 
+    ## I followed the py-evm approach which does that in opcode logic
     gasCostConstant*: UInt256
     runLogic*:  proc(computation: var BaseComputation)

src/utils/address.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import strformat, strutils, encodings, keccak, padding
 
 proc toText*(c: cstring): string =

src/utils/bytes.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import strutils, sequtils
 
 # proc toBytes*(value: cstring): seq[byte] =

src/utils/header.nim

@@ -1,3 +1,11 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
+
 import ../constants, ttmath, strformat, times, ../validation
 
 type
@@ -99,7 +107,7 @@ proc generateHeaderFromParentHeader*(
   result = Header(
     timestamp: max(getTime(), parent.timestamp + 1.milliseconds),   # Note: Py-evm uses +1 second, not ms
     block_number: (parent.block_number + u256(1)),
-    # TODO: difficulty: parent.computeDifficulty(parent.timestamp),       
+    # TODO: difficulty: parent.computeDifficulty(parent.timestamp),
     #[TODO: Make field? Or do we need to keep as a proc?
     gas_limit: computeGasLimit(
       parent,

src/utils/hexadecimal.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import strutils
 
 proc encodeHex*(value: string): string =

src/utils/keccak.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   keccak_tiny, strutils
 

src/utils/padding.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import strformat, strutils
 
 proc repeat*(b: cstring, count: int): cstring =
@@ -95,7 +102,7 @@ proc rStrip*(value: cstring, c: char): cstring =
   elif z == -1:
     result = cstring""
   else:
-    result = cstring(($value)[0..z])  
+    result = cstring(($value)[0..z])
 
 proc strip*(value: cstring, c: char): cstring =
   result = value.lStrip(c).rStrip(c)

src/utils/state.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 # import
 #   eth_utils, rlp, trie, evm.db.backends.memory, evm.db.chain
 

src/utils_numeric.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import ttmath, constants, strformat, strutils, sequtils, endians, macros, utils / padding, rlp
 
 # some methods based on py-evm utils/numeric
@@ -9,7 +16,7 @@ proc intToBigEndian*(value: UInt256): Bytes =
   for z in 0 ..< 4:
     var temp = value.table[z]
     bigEndian64(result[24 - z * 8].addr, temp.addr)
-  
+
 proc bigEndianToInt*(value: Bytes): UInt256 =
   var bytes = value.padLeft(32, 0.byte)
   result = 0.u256

src/validation.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat,
   errors, constants, ttmath

src/vm/base.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   ../logging, ../constants, ../errors, ../transaction, ../types, ../computation, ../block_obj, ../vm_state, ../vm_state_transactions, ../db/db_chain, ../utils/header
 

src/vm/code_stream.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat, strutils, sequtils, parseutils, sets, macros,
   ../logging, ../constants, ../opcode_values

src/vm/forks/frontier/frontier_block.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   ../../../logging, ../../../constants, ../../../errors, ../../../transaction,
   ../../../block_obj,

src/vm/forks/frontier/frontier_headers.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   logging, constants, errors, validation, utils/header, vm / forks / frontier / vm
 
@@ -15,7 +22,7 @@ method computeDifficulty*(parentHeader: Header, timestamp: int): Int256 =
   # result = if numBombPeriods >= 0: max(baseDifficulty + 2.Int256 ^ numBombPeriods, DIFFICULTY_MINIMUM) else: baseDifficulty
   result = 0.Int256
 
-method createHeaderFromParent*(parentHeader: Header): Header = 
+method createHeaderFromParent*(parentHeader: Header): Header =
   # TODO
   result = Header()
 

src/vm/forks/frontier/frontier_validation.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat, ttmath,
   ../../../constants, ../../../errors, ../../../vm_state, ../../../transaction, ../../../utils/header

src/vm/forks/frontier/frontier_vm_state.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   ../../../logging, ../../../constants, ../../../errors, ../../../vm_state,
   ../../../utils/header, ../../../db/db_chain

src/vm/forks/frontier/vm.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   ../../../logging, ../../../constants, ../../../errors,
   ttmath,

src/vm/gas_costs.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat, ttmath,
   ../types, ../constants, ../opcode, ../computation, stack
@@ -5,4 +12,4 @@ import
 proc expGasCost*(computation: var BaseComputation): UInt256 =
   let arg = computation.stack.getInt(0)
   result = if arg == 0: 10.u256 else: (10.u256 + 10.u256 * (1.u256 + arg.log256))
-  
+

src/vm/gas_meter.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat,
   ../logging, ../errors, ../constants, ttmath

src/vm/memory.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   sequtils, ttmath,
   ../constants, ../errors, ../logging, ../validation, ../utils_numeric, ../utils/bytes
@@ -34,7 +41,7 @@ proc read*(memory: var Memory, startPosition: UInt256, size: UInt256): seq[byte]
 proc write*(memory: var Memory, startPosition: UInt256, size: UInt256, value: seq[byte]) =
   if size == 0:
     return
-  #echo size 
+  #echo size
   #echo startPosition
   #validateGte(startPosition, 0)
   #validateGte(size, 0)

src/vm/message.nim

@@ -1,10 +1,17 @@
-import 
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
+import
     ../logging, ../constants, ../validation, ttmath
 
 type
   Message* = ref object
     # A message for VM computation
-    
+
     # depth = None
 
     # code = None
@@ -20,7 +27,7 @@ type
     gas*:                     UInt256
     gasPrice*:                UInt256
     to*:                      string
-    sender*:                  string    
+    sender*:                  string
     value*:                   UInt256
     data*:                    seq[byte]
     code*:                    string
@@ -74,11 +81,11 @@ proc newMessage*(
     data: seq[byte],
     code: string,
     options: MessageOptions = newMessageOptions()): Message =
-    
+
   new(result)
   result.gas = gas
   result.gasPrice = gasPrice
-    
+
   if to != CREATE_CONTRACT_ADDRESS:
     validateCanonicalAddress(to, title="Message.to")
   result.to = to

src/vm/stack.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat, strutils, sequtils, macros, rlp,
   value, ../errors, ../validation, ../utils_numeric, ../constants, ttmath, ../logging, .. / utils / bytes
@@ -68,7 +75,7 @@ proc push*(stack: var Stack, value: Bytes) =
   stack.values.add(value.toType(UInt256))
 
 proc internalPop(stack: var Stack, numItems: int): seq[UInt256] =
-  if len(stack) < numItems: 
+  if len(stack) < numItems:
     result = @[]
   else:
     result = stack.values[^numItems .. ^1]
@@ -76,9 +83,9 @@ proc internalPop(stack: var Stack, numItems: int): seq[UInt256] =
 
 proc internalPop(stack: var Stack, numItems: int, T: typedesc): seq[T] =
   result = @[]
-  if len(stack) < numItems: 
+  if len(stack) < numItems:
     return
-  
+
   for z in 0 ..< numItems:
     var value = stack.values.pop()
     result.add(toType(value, T))
@@ -127,7 +134,7 @@ macro popInt*(stack: typed, numItems: static[int]): untyped =
     var name = ident(&"internalPopTuple{numItems}")
     result = quote:
       `name`(`stack`, UInt256)
-  
+
 proc popBinary*(stack: var Stack): Bytes =
   var elements = stack.internalPop(1, Bytes)
   ensurePop(elements, 1)

src/vm/value.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat, strutils, sequtils,
   ../constants, ttmath

src/vm_state.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   macros, strformat, tables,
   logging, constants, ttmath, errors, transaction, db/db_chain, utils/state, utils/header

src/vm_state_transactions.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   strformat, tables,
   logging, constants, errors, computation, transaction, types, vm_state, block_obj, db / db_chain, utils / [state, header]

tests/all_tests.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import  ./test_code_stream,
         ./test_gas_meter,
         ./test_memory,

tests/fixtures.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import unittest, strformat, tables, constants, chain, ttmath, vm / forks / frontier / vm, utils / [header, address], db / db_chain, db / backends / memory_backend
 
 proc chainWithoutBlockValidation: Chain =

tests/test_code_stream.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import  unittest, strutils, sequtils,
         ../src/opcode_values, ../src/vm/code_stream
 

tests/test_gas_meter.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import  unittest, macros, strformat, strutils, sequtils,
         ttmath,
         ../src/[constants, opcode_values, errors, logging, vm/gas_meter]

tests/test_helpers.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   os, macros, json, strformat, strutils, parseutils, ospaths, tables,
   ttmath,

tests/test_memory.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import  unittest, macros, strformat, strutils, sequtils,
         ttmath,
         ../src/[constants, opcode_values, errors, vm/memory]

tests/test_opcode.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   unittest, ttmath, tables, parseutils,
   ../src/[constants, types, errors, logging],

tests/test_stack.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import  unittest, macros, strformat, strutils, sequtils,
         ttmath,
         ../src/[constants, opcode_values, errors, utils_numeric, vm/stack, vm/value, utils/bytes, utils/padding]

tests/test_vm.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   unittest,
   test_helpers, .. / src / [db / backends / memory, db / chain, constants, utils / hexadecimal]
@@ -10,12 +17,12 @@ suite "vm":
       txIdx = len(vm.`block`.transactions)
       recipient = decodeHex("0xa94f5374fce5edbc8e2a8697c15331677e6ebf0c")
       amount = 100.Int256
-    
+
     var from = chain.fundedAddress
     var tx = newTransaction(vm, from, recipient, amount, chain.fundedAddressPrivateKey)
     var (computation, _) = vm.applyTransaction(tx)
     var accessLogs = computation.vmState.accessLogs
-    
+
     check(not computation.isError)
 
     var txGas = tx.gasPrice * constants.GAS_TX

tests/test_vm_json.nim

@@ -1,3 +1,10 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import
   unittest, strformat, strutils, sequtils, tables, ttmath, json,
   test_helpers, constants, errors, logging, ospaths,
@@ -21,7 +28,7 @@ proc testFixture(fixtures: JsonNode, testStatusIMPL: var TestStatus) =
     blockNumber: fixture{"env"}{"currentNumber"}.getHexadecimalInt.u256,
     gasLimit: fixture{"env"}{"currentGasLimit"}.getHexadecimalInt.u256,
     timestamp: fixture{"env"}{"currentTimestamp"}.getHexadecimalInt)
-  
+
   var code = ""
   vm.state.db(readOnly=false):
     setupStateDB(fixture{"pre"}, db)
@@ -71,8 +78,8 @@ proc testFixture(fixtures: JsonNode, testStatusIMPL: var TestStatus) =
     let expectedGasRemaining = fixture{"gas"}.getHexadecimalInt.u256
     let actualGasRemaining = gasMeter.gasRemaining
     checkpoint(&"{actualGasRemaining} {expectedGasRemaining}")
-    check(actualGasRemaining == expectedGasRemaining or 
-          computation.code.hasSStore() and 
+    check(actualGasRemaining == expectedGasRemaining or
+          computation.code.hasSStore() and
             (actualGasRemaining > expectedGasRemaining and (actualGasRemaining - expectedGasRemaining) mod 15_000 == 0 or
              expectedGasRemaining > actualGasRemaining and (expectedGasRemaining - actualGasRemaining) mod 15_000 == 0))