import
  macro_assembler, unittest, macros, strutils,
  byteutils, eth/common, ../nimbus/db/state_db,
  ../nimbus/db/db_chain, ranges

suite "Environmental Information Opcodes":
  let (blockNumber, chainDB) = initDatabase()

  assembler: # CODECOPY OP
    title: "CODECOPY_1"
    code:
      PUSH1 "0x03" # size
      PUSH1 "0x08" # copy start pos
      PUSH1 "0x00" # mem start pos
      CODECOPY
      STOP
      SLT
      CALLVALUE
      JUMP
    memory: "0x1234560000000000000000000000000000000000000000000000000000000000"
    # assertEquals(6, gas); ??

  assembler: # CODECOPY OP
    title: "CODECOPY_2"
    code:
      PUSH1 "0x5E" # size
      PUSH1 "0x08" # copy start pos
      PUSH1 "0x00" # mem start pos
      CODECOPY
      STOP
      PUSH1 "0x00"
      PUSH1 "0x5f"
      SSTORE
      PUSH1 "0x14"
      PUSH1 "0x00"
      SLOAD
      PUSH1 "0x1e"
      PUSH1 "0x20"
      SLOAD
      PUSH4 "0xabcddcba"
      PUSH1 "0x40"
      SLOAD
      JUMPDEST
      MLOAD
      PUSH1 "0x20"
      ADD
      PUSH1 "0x0a"
      MSTORE
      SLOAD
      MLOAD
      PUSH1 "0x40"
      ADD
      PUSH1 "0x14"
      MSTORE
      SLOAD
      MLOAD
      PUSH1 "0x60"
      ADD
      PUSH1 "0x1e"
      MSTORE
      SLOAD
      MLOAD
      PUSH1 "0x80"
      ADD
      PUSH1 "0x28"
      MSTORE
      SLOAD
      PUSH1 "0xa0"
      MSTORE
      SLOAD
      PUSH1 "0x16"
      PUSH1 "0x48"
      PUSH1 "0x00"
      CODECOPY
      PUSH1 "0x16"
      PUSH1 "0x00"
      CALLCODE
      PUSH1 "0x00"
      PUSH1 "0x3f"
      SSTORE
      PUSH2 "0x03e7"
      JUMP
      PUSH1 "0x00"
      SLOAD
      PUSH1 "0x00"
      MSTORE8
      PUSH1 "0x20"
      MUL
      CALLDATALOAD
      PUSH1 "0x20"
      SLOAD
    memory:
      "0x6000605F556014600054601E60205463ABCDDCBA6040545B51602001600A5254"
      "0x516040016014525451606001601E5254516080016028525460A0525460166048"
      "0x60003960166000F26000603F556103E756600054600053602002356020540000"
    #assertEquals(10, gas); ??

  assembler: # CODECOPY OP
    title: "CODECOPY_3"
      # cost for that:
      # 94 - data copied
      # 95 - new bytes allocated
    code:
      Push1 "0x5E"
      Push1 "0x08"
      Push1 "0x00"
      CodeCopy
      STOP
      "0x6000605f556014600054601e60205463abcddcba6040545b"
      "0x51602001600a5254516040016014525451606001601e52545160800160285254"
      "0x60a052546016604860003960166000f26000603f556103e75660005460005360"
      "0x20023500"
    memory:
      "0x6000605F556014600054601E60205463ABCDDCBA6040545B51602001600A5254"
      "0x516040016014525451606001601E5254516080016028525460A0525460166048"
      "0x60003960166000F26000603F556103E756600054600053602002350000000000"
    #assertEquals(10, program.getResult().getGasUsed());

  assembler: # CODECOPY OP
    title: "CODECOPY_4"
    code:
      Push1 "0x5E"
      Push1 "0x07"
      Push1 "0x00"
      CodeCopy
      STOP
      "0x6000605f556014600054601e60205463abcddcba6040545b51"
      "0x602001600a5254516040016014525451606001601e5254516080016028525460"
      "0xa052546016604860003960166000f26000603f556103e756600054600053602002351234"
    memory:
      "0x006000605F556014600054601E60205463ABCDDCBA6040545B51602001600A52"
      "0x54516040016014525451606001601E5254516080016028525460A05254601660"
      "0x4860003960166000F26000603F556103E7566000546000536020023512340000"
    #assertEquals(10, program.getResult().getGasUsed());

  assembler: # CODECOPY OP
    title: "CODECOPY_5"
    code:
      Push2 "0x1234"
      Push1 "0x00"
      Sload
      Push2 "0x5566"
      Push1 "0x20"
      Sload
      Push1 "0x70"
      Push1 "0x00"
      Push1 "0x20"
      CodeCopy
      STOP
      "0x6000605f55601460"
      "0x0054601e60205463abcddcba6040545b51602001600a525451604001"
      "0x6014525451606001601e5254516080016028525460a0525460166048"
      "0x60003960166000f26000603f556103e75660005460005360200235123400"
    stack:
      "0x1234"
      "0x00"
      "0x5566"
      "0x00"
    memory:
      "0x0000000000000000000000000000000000000000000000000000000000000000"
      "0x61123460005461556660205460706000602039006000605f556014600054601e"
      "0x60205463abcddcba6040545b51602001600a5254516040016014525451606001"
      "0x601e5254516080016028525460a052546016604860003960166000f26000603f"
      "0x556103e756600054600053602002351200000000000000000000000000000000"

  assembler: # CODECOPY OP mal
    title: "CODECOPY_6"
    code:
      "0x605E6007396000605f556014600054601e60205463abcddcba604054"
      "0x5b51602001600a5254516040016014525451606001601e5254516080"
      "0x016028525460a052546016604860003960166000f26000603f556103"
      "0xe756600054600053602002351234"
    success: false
    stack:
      "0x5e"
      "0x07"

  var acc: EthAddress
  hexToByteArray("0xfbe0afcd7658ba86be41922059dd879c192d4c73", acc)
  var
    parent = chainDB.getBlockHeader(blockNumber - 1)
    stateDB = newAccountStateDB(chainDB.db, parent.stateRoot, false)
    code = hexToSeqByte("0x0102030405060708090A0B0C0D0E0F" &
      "611234600054615566602054603E6000602073471FD3AD3E9EEADEEC4608B92D" &
      "16CE6B500704CC3C6000605f556014600054601e60205463abcddcba6040545b" &
      "51602001600a5254516040016014525451606001601e52545160800160285254" &
      "60a052546016604860003960166000f26000603f556103e756600054600053602002351234")

  stateDB.setCode(acc, code.toRange)
  parent.stateRoot = stateDB.rootHash
  chainDB.setHead(parent, true)

  assembler: # EXTCODECOPY OP
    title: "EXTCODECOPY_1"
    code:
      Push1 "0x04" # size
      Push1 "0x07" # code pos
      Push1 "0x00" # mem pos
      Push20 "0xfbe0afcd7658ba86be41922059dd879c192d4c73"
      ExtCodeCopy
      STOP
      Slt
      CallValue
      Jump
      Stop
    memory: "0x08090a0b00000000000000000000000000000000000000000000000000000000"

  assembler: # EXTCODECOPY OP
    title: "EXTCODECOPY_2"
    code:
      Push1 "0x3E"
      Push1 "0x07"
      Push1 "0x00"
      Push20 "0xfbe0afcd7658ba86be41922059dd879c192d4c73"
      ExtCodeCopy
      STOP
      "0x6000605f"
      "0x556014600054601e60205463abcddcba6040545b51602001600a525451604001"
      "0x6014525451606001601e5254516080016028525460a052546016604860003960"
      "0x166000f26000603f556103e75660005460005360200235602054"
    memory:
      "0x08090a0b0c0d0e0f611234600054615566602054603e6000602073471fd3ad3e"
      "0x9eeadeec4608b92d16ce6b500704cc3c6000605f556014600054601e60200000"

  assembler: # EXTCODECOPY OP
    title: "EXTCODECOPY_3"
    code:
      Push1 "0x5E"
      Push1 "0x07"
      Push1 "0x00"
      Push20 "0xfbe0afcd7658ba86be41922059dd879c192d4c73"
      ExtCodeCopy
      STOP
      "0x6000605f"
      "0x556014600054601e60205463abcddcba6040545b51602001600a525451604001"
      "0x6014525451606001601e5254516080016028525460a052546016604860003960"
      "0x166000f26000603f556103e75660005460005360200235"
    memory:
      "0x08090a0b0c0d0e0f611234600054615566602054603e6000602073471fd3ad3e"
      "0x9eeadeec4608b92d16ce6b500704cc3c6000605f556014600054601e60205463"
      "0xabcddcba6040545b51602001600a5254516040016014525451606001601e0000"

  assembler: # EXTCODECOPY OP
    title: "EXTCODECOPY_4"
    code:
      Push2 "0x1234"
      Push1 "0x00"
      Sload
      Push2 "0x5566"
      Push1 "0x20"
      Sload
      Push1 "0x3E"
      Push1 "0x00"
      Push1 "0x20"
      Push20 "0xfbe0afcd7658ba86be41922059dd879c192d4c73"
      ExtCodeCopy
      STOP
      "0x6000605f556014600054601e60205463abcddcba6040545b"
      "0x51602001600a5254516040016014525451606001601e52545160800160285254"
      "0x60a052546016604860003960166000f26000603f556103e756600054600053602002351234"
    stack:
      "0x1234"
      "0x00"
      "0x5566"
      "0x00"
    memory:
      "0x0000000000000000000000000000000000000000000000000000000000000000"
      "0x0102030405060708090a0b0c0d0e0f611234600054615566602054603e600060"
      "0x2073471fd3ad3e9eeadeec4608b92d16ce6b500704cc3c6000605f5560140000"

  assembler: # EXTCODECOPY OP mal
    title: "EXTCODECOPY_5"
    code:
      Push1 "0x5E"
      Push1 "0x07"
      Push20 "0x471FD3AD3E9EEADEEC4608B92D16CE6B500704CC"
      ExtCodeCopy
    success: false
    stack:
      "0x5E"
      "0x07"

  assembler: # CODESIZE OP
    title: "CODESIZE_1"
    code:
      "0x385E60076000396000605f556014600054601e60205463abcddcba6040545b51"
      "0x602001600a5254516040016014525451606001601e5254516080016028525460"
      "0xa052546016604860003960166000f26000603f556103e75660005460005360200235"
    stack:
      "0x0000000000000000000000000000000000000000000000000000000000000062"
    success: false

  # 0x94 == 148 bytes
  assembler: # EXTCODESIZE OP
    title: "EXTCODESIZE_1"
    code:
      Push20 "0xfbe0afcd7658ba86be41922059dd879c192d4c73"
      ExtCodeSize
      STOP
      "0x5E60076000396000605f"
      "0x556014600054601e60205463abcddcba6040545b51602001600a525451604001"
      "0x6014525451606001601e5254516080016028525460a052546016604860003960"
      "0x166000f26000603f556103e75660005460005360200235"
    stack: "0x94"