Get address of currently executing account.

Examples

iex> EVM.Operation.EnvironmentalInformation.address([], %{exec_env: %EVM.ExecEnv{address: <<01, 00>>}})
<<1, 0>>

Get balance of the given account.

Examples

iex> db = MerklePatriciaTree.Test.random_ets_db()
iex> state = MerklePatriciaTree.Trie.new(db)
iex> account_interface = EVM.Interface.Mock.MockAccountInterface.new(%{123 => %{balance: 500}})
iex> exec_env = %EVM.ExecEnv{account_interface: account_interface}
iex> EVM.Operation.EnvironmentalInformation.balance([123], %{state: state, exec_env: exec_env, machine_state: %EVM.MachineState{}}).machine_state.stack
[500]

iex> db = MerklePatriciaTree.Test.random_ets_db()
iex> state = MerklePatriciaTree.Trie.new(db)
iex> account_map = %{123 => %{balance: nil}}
iex> account_interface = EVM.Interface.Mock.MockAccountInterface.new(%{account_map: account_map})
iex> exec_env = %EVM.ExecEnv{account_interface: account_interface}
iex> EVM.Operation.EnvironmentalInformation.balance([123], %{state: state, exec_env: exec_env, machine_state: %EVM.MachineState{}}).machine_state.stack
[0]

Copy input data in current environment to memory.

TODO: Implement opcode

Examples

iex> code = <<54>>
iex> EVM.Operation.EnvironmentalInformation.calldatacopy([0, 0, 1], %{exec_env: %EVM.ExecEnv{data: code}, machine_state: %EVM.MachineState{}})
%{machine_state: %EVM.MachineState{active_words: 1, gas: nil, memory: <<54>> <> <<0::248>>, program_counter: 0, previously_active_words: 0, stack: []}}

Get input data of current environment.

TODO: Implement opcode

Examples

iex> EVM.Operation.EnvironmentalInformation.calldataload([0], %{exec_env: %{data: (for _ <- 1..50, into: <<>>, do: <<255>>)}})
-1

iex> EVM.Operation.EnvironmentalInformation.calldataload([0], %{exec_env: %{data: (for _ <- 1..3, into: <<>>, do: <<1>>)}})
<<1::8, 1::8, 1::8, 0::232>> |> EVM.Helpers.decode_signed

iex> EVM.Operation.EnvironmentalInformation.calldataload([100], %{exec_env: %{data: (for _ <- 1..3, into: <<>>, do: <<1>>)}})
0

Get size of input data in current environment.

Examples

iex> exec_env = %EVM.ExecEnv{data: "hello world"}
iex> EVM.Operation.EnvironmentalInformation.calldatasize([], %{exec_env: exec_env})
11

Get caller address.

This is the address of the account that is directly responsible for this execution.

Examples

iex> exec_env = %EVM.ExecEnv{originator: <<1::160>>, sender: <<2::160>>}
iex> EVM.Operation.EnvironmentalInformation.caller([], %{exec_env: exec_env, machine_state: %EVM.MachineState{}})
<<2::160>>

Get deposited value by the instruction / transaction responsible for this execution.

Examples

iex> exec_env = %EVM.ExecEnv{value_in_wei: 1_000}
iex> EVM.Operation.EnvironmentalInformation.callvalue([], %{exec_env: exec_env})
1_000

Copy code running in current environment to memory.

Examples

iex> code = <<54>>
iex> EVM.Operation.EnvironmentalInformation.codecopy([0, 0, 1], %{exec_env: %EVM.ExecEnv{machine_code: code}, machine_state: %EVM.MachineState{}})
%{machine_state: %EVM.MachineState{active_words: 1, gas: nil, memory: <<54>> <> <<0::248>>, program_counter: 0, previously_active_words: 0, stack: []}}

Get size of code running in current environment.

Examples

iex> EVM.Operation.EnvironmentalInformation.codesize([], %{exec_env: %{machine_code: <<0::256>>}})
32

Copy an account’s code to memory.

Examples

iex> db = MerklePatriciaTree.Test.random_ets_db()
iex> state = MerklePatriciaTree.Trie.new(db)
iex> code = <<54>>
iex> account_map = %{<<0::160>> => %{code: code}}
iex> account_interface = EVM.Interface.Mock.MockAccountInterface.new(account_map)
iex> EVM.Operation.EnvironmentalInformation.extcodecopy([<<0::160>>, 0, 0, 1], %{exec_env: %EVM.ExecEnv{account_interface: account_interface}, machine_state: %EVM.MachineState{}, state: state})[:machine_state]
%EVM.MachineState{active_words: 1, gas: nil, memory: <<54>> <> <<0::248>>, program_counter: 0, previously_active_words: 0, stack: []}

Get size of an account’s code.

Examples

iex> account_interface = EVM.Interface.Mock.MockAccountInterface.new(%{0x01 => %{code: <<0x11, 0x22, 0x33, 0x44>>}})
iex> db = MerklePatriciaTree.Test.random_ets_db()
iex> state = MerklePatriciaTree.Trie.new(db)
iex> exec_env = %EVM.ExecEnv{account_interface: account_interface}
iex> EVM.Operation.EnvironmentalInformation.extcodesize([0x01], %{exec_env: exec_env, state: state, machine_state: %EVM.MachineState{}}).machine_state.stack
[4]

Get price of gas in current environment.

Examples

iex> EVM.Operation.EnvironmentalInformation.gasprice([], %{exec_env: %{gas_price: 98}})
98

Get execution origination address.

This is the sender of original transaction; it is never an account with non-empty associated code.

Examples

iex> exec_env = %EVM.ExecEnv{originator: <<1::160>>, sender: <<2::160>>}
iex> EVM.Operation.EnvironmentalInformation.origin([], %{exec_env: exec_env})
<<1::160>>