Module: BSV::Script::Opcodes

Defined in:
lib/bsv/script/opcodes.rb

Overview

All Bitcoin script opcodes as integer constants.

Includes data push operations, flow control, stack manipulation, splice, bitwise, arithmetic, and cryptographic opcodes. Also provides Opcodes.name_for for reverse lookup (opcode byte → name).

Constant Summary collapse

OP_0 =

Push value

0x00
OP_FALSE = 
OP_0
OP_PUSHDATA1 = 
0x4c
OP_PUSHDATA2 = 
0x4d
OP_PUSHDATA4 = 
0x4e
OP_1NEGATE = 
0x4f
OP_RESERVED = 
0x50
OP_1 = 
0x51
OP_TRUE = 
OP_1
OP_2 = 
0x52
OP_3 = 
0x53
OP_4 = 
0x54
OP_5 = 
0x55
OP_6 = 
0x56
OP_7 = 
0x57
OP_8 = 
0x58
OP_9 = 
0x59
OP_10 = 
0x5a
OP_11 = 
0x5b
OP_12 = 
0x5c
OP_13 = 
0x5d
OP_14 = 
0x5e
OP_15 = 
0x5f
OP_16 = 
0x60
OP_NOP =

Flow control

0x61
OP_VER = 
0x62
OP_IF = 
0x63
OP_NOTIF = 
0x64
OP_VERIF = 
0x65
OP_VERNOTIF = 
0x66
OP_ELSE = 
0x67
OP_ENDIF = 
0x68
OP_VERIFY = 
0x69
OP_RETURN = 
0x6a
OP_TOALTSTACK =

Stack

0x6b
OP_FROMALTSTACK = 
0x6c
OP_2DROP = 
0x6d
OP_2DUP = 
0x6e
OP_3DUP = 
0x6f
OP_2OVER = 
0x70
OP_2ROT = 
0x71
OP_2SWAP = 
0x72
OP_IFDUP = 
0x73
OP_DEPTH = 
0x74
OP_DROP = 
0x75
OP_DUP = 
0x76
OP_NIP = 
0x77
OP_OVER = 
0x78
OP_PICK = 
0x79
OP_ROLL = 
0x7a
OP_ROT = 
0x7b
OP_SWAP = 
0x7c
OP_TUCK = 
0x7d
OP_CAT =

Splice

0x7e
OP_SPLIT = 
0x7f
OP_NUM2BIN = 
0x80
OP_BIN2NUM = 
0x81
OP_SIZE = 
0x82
OP_INVERT =

Bitwise logic

0x83
OP_AND = 
0x84
OP_OR = 
0x85
OP_XOR = 
0x86
OP_EQUAL = 
0x87
OP_EQUALVERIFY = 
0x88
OP_RESERVED1 = 
0x89
OP_RESERVED2 = 
0x8a
OP_1ADD =

Arithmetic

0x8b
OP_1SUB = 
0x8c
OP_2MUL = 
0x8d
OP_2DIV = 
0x8e
OP_NEGATE = 
0x8f
OP_ABS = 
0x90
OP_NOT = 
0x91
OP_0NOTEQUAL = 
0x92
OP_ADD = 
0x93
OP_SUB = 
0x94
OP_MUL = 
0x95
OP_DIV = 
0x96
OP_MOD = 
0x97
OP_LSHIFT = 
0x98
OP_RSHIFT = 
0x99
OP_BOOLAND = 
0x9a
OP_BOOLOR = 
0x9b
OP_NUMEQUAL = 
0x9c
OP_NUMEQUALVERIFY = 
0x9d
OP_NUMNOTEQUAL = 
0x9e
OP_LESSTHAN = 
0x9f
OP_GREATERTHAN = 
0xa0
OP_LESSTHANOREQUAL = 
0xa1
OP_GREATERTHANOREQUAL = 
0xa2
OP_MIN = 
0xa3
OP_MAX = 
0xa4
OP_WITHIN = 
0xa5
OP_RIPEMD160 =

Crypto

0xa6
OP_SHA1 = 
0xa7
OP_SHA256 = 
0xa8
OP_HASH160 = 
0xa9
OP_HASH256 = 
0xaa
OP_CODESEPARATOR = 
0xab
OP_CHECKSIG = 
0xac
OP_CHECKSIGVERIFY = 
0xad
OP_CHECKMULTISIG = 
0xae
OP_CHECKMULTISIGVERIFY = 
0xaf
OP_NOP1 =

Expansion / NOP upgrades

0xb0
OP_CHECKLOCKTIMEVERIFY = 
0xb1
OP_CHECKSEQUENCEVERIFY = 
0xb2
OP_SUBSTR =

Chronicle slots (0xb3–0xb7): string-splice and numeric-shift opcodes re-enabled in BSV Chronicle. Fully implemented in the interpreter.

0xb3
OP_LEFT = 
0xb4
OP_RIGHT = 
0xb5
OP_LSHIFTNUM = 
0xb6
OP_RSHIFTNUM = 
0xb7
OP_NOP4 =

NOP aliases for the Chronicle slots (preserved for compatibility)

OP_SUBSTR
OP_NOP5 = 
OP_LEFT
OP_NOP6 = 
OP_RIGHT
OP_NOP7 = 
OP_LSHIFTNUM
OP_NOP8 = 
OP_RSHIFTNUM
OP_NOP9 = 
0xb8
OP_NOP10 = 
0xb9
OP_NOP11 =

Extended NOP range (0xba–0xfc) — unnamed, reserved for future use. Defined so that to_asm/from_asm can round-trip scripts containing them.

0xba
OP_NOP12 = 
0xbb
OP_NOP13 = 
0xbc
OP_NOP14 = 
0xbd
OP_NOP15 = 
0xbe
OP_NOP16 = 
0xbf
OP_NOP17 = 
0xc0
OP_NOP18 = 
0xc1
OP_NOP19 = 
0xc2
OP_NOP20 = 
0xc3
OP_NOP21 = 
0xc4
OP_NOP22 = 
0xc5
OP_NOP23 = 
0xc6
OP_NOP24 = 
0xc7
OP_NOP25 = 
0xc8
OP_NOP26 = 
0xc9
OP_NOP27 = 
0xca
OP_NOP28 = 
0xcb
OP_NOP29 = 
0xcc
OP_NOP30 = 
0xcd
OP_NOP31 = 
0xce
OP_NOP32 = 
0xcf
OP_NOP33 = 
0xd0
OP_NOP34 = 
0xd1
OP_NOP35 = 
0xd2
OP_NOP36 = 
0xd3
OP_NOP37 = 
0xd4
OP_NOP38 = 
0xd5
OP_NOP39 = 
0xd6
OP_NOP40 = 
0xd7
OP_NOP41 = 
0xd8
OP_NOP42 = 
0xd9
OP_NOP43 = 
0xda
OP_NOP44 = 
0xdb
OP_NOP45 = 
0xdc
OP_NOP46 = 
0xdd
OP_NOP47 = 
0xde
OP_NOP48 = 
0xdf
OP_NOP49 = 
0xe0
OP_NOP50 = 
0xe1
OP_NOP51 = 
0xe2
OP_NOP52 = 
0xe3
OP_NOP53 = 
0xe4
OP_NOP54 = 
0xe5
OP_NOP55 = 
0xe6
OP_NOP56 = 
0xe7
OP_NOP57 = 
0xe8
OP_NOP58 = 
0xe9
OP_NOP59 = 
0xea
OP_NOP60 = 
0xeb
OP_NOP61 = 
0xec
OP_NOP62 = 
0xed
OP_NOP63 = 
0xee
OP_NOP64 = 
0xef
OP_NOP65 = 
0xf0
OP_NOP66 = 
0xf1
OP_NOP67 = 
0xf2
OP_NOP68 = 
0xf3
OP_NOP69 = 
0xf4
OP_NOP70 = 
0xf5
OP_NOP71 = 
0xf6
OP_NOP72 = 
0xf7
OP_NOP73 = 
0xf8
OP_NOP74 = 
0xf9
OP_NOP75 = 
0xfa
OP_NOP76 = 
0xfb
OP_NOP77 = 
0xfc
OP_PUBKEYHASH =

Pseudo-words (not used in scripts)

0xfd
OP_PUBKEY = 
0xfe
OP_INVALIDOPCODE = 
0xff
NAME =

Reverse lookup: opcode byte → name string. Sorted so canonical names (OP_0, OP_1) win over aliases (OP_FALSE, OP_TRUE) regardless of Module#constants enumeration order.

constants
.select { |c| c.to_s.start_with?('OP_') }
.sort
.each_with_object({}) { |c, h| h[const_get(c)] ||= c.to_s }
.freeze

Class Method Summary collapse

Class Method Details

.name_for(opcode) ⇒ String?

Look up the canonical name for an opcode byte.

Parameters:

  • opcode (Integer) —

    the opcode byte value

Returns:

  • (String, nil) —

    the opcode name (e.g. “OP_DUP”), or nil if unknown



241
242
243
 
# File 'lib/bsv/script/opcodes.rb', line 241

def name_for(opcode)
  NAME[opcode]
end