defmodule BitcoinLib.Script.Opcodes.Constants.Four do
@moduledoc """
Based on https://en.bitcoin.it/wiki/Script
Word OP_4
Opcode 84
Hex 0x54
Input Nothing
Output 4
The number 4 is pushed onto the stack.
"""
@behaviour BitcoinLib.Script.Opcode
defstruct []
alias BitcoinLib.Script.Opcodes.Constants.Four
@value 0x54
@doc """
Returns 0x54
## Examples
iex> BitcoinLib.Script.Opcodes.Constants.Four.v()
0x54
"""
@spec v() :: 0x54
def v do
@value
end
@doc """
Returns <<0x54>>
## Examples
iex> BitcoinLib.Script.Opcodes.Constants.Four.encode()
<<0x54>>
"""
@spec encode() :: <<_::8>>
def encode() do
<<@value::8>>
end
@doc """
The number 4 is pushed onto the stack.
## Examples
iex> BitcoinLib.Script.Opcodes.Constants.Four.execute(
...> %BitcoinLib.Script.Opcodes.Constants.Four{},
...> [3]
...> )
{:ok, [4, 3]}
"""
def execute(%Four{}, remaining) do
{:ok, [4 | remaining]}
end
end