Implementation
final scriptOpNameToCode = {
// Push value ops.
"FALSE": 0x00,
"0": 0x00,
"PUSHDATA1": 0x4c,
"PUSHDATA2": 0x4d,
"PUSHDATA4": 0x4e,
"1NEGATE": 0x4f,
"RESERVED": 0x50,
"1": 0x51,
"TRUE": 0x51,
"2": 0x52,
"3": 0x53,
"4": 0x54,
"5": 0x55,
"6": 0x56,
"7": 0x57,
"8": 0x58,
"9": 0x59,
"10": 0x5a,
"11": 0x5b,
"12": 0x5c,
"13": 0x5d,
"14": 0x5e,
"15": 0x5f,
"16": 0x60,
// Control ops.
"NOP": 0x61,
"VER": 0x62,
"IF": 0x63,
"NOTIF": 0x64,
"VERIF": 0x65,
"VERNOTIF": 0x66,
"ELSE": 0x67,
"ENDIF": 0x68,
"VERIFY": 0x69,
"RETURN": 0x6a,
// Stack ops.
"TOALTSTACK": 0x6b,
"FROMALTSTACK": 0x6c,
"2DROP": 0x6d,
"2DUP": 0x6e,
"3DUP": 0x6f,
"2OVER": 0x70,
"2ROT": 0x71,
"2SWAP": 0x72,
"IFDUP": 0x73,
"DEPTH": 0x74,
"DROP": 0x75,
"DUP": 0x76,
"NIP": 0x77,
"OVER": 0x78,
"PICK": 0x79,
"ROLL": 0x7a,
"ROT": 0x7b,
"SWAP": 0x7c,
"TUCK": 0x7d,
// Splice ops.
"CAT": 0x7e,
"SUBSTR": 0x7f,
"LEFT": 0x80,
"RIGHT": 0x81,
"SIZE": 0x82,
// Bit logic ops.
"INVERT": 0x83,
"AND": 0x84,
"OR": 0x85,
"XOR": 0x86,
"EQUAL": 0x87,
"EQUALVERIFY": 0x88,
"RESERVED1": 0x89,
"RESERVED2": 0x8a,
// Numeric ops.
"1ADD": 0x8b,
"1SUB": 0x8c,
"2MUL": 0x8d,
"2DIV": 0x8e,
"NEGATE": 0x8f,
"ABS": 0x90,
"NOT": 0x91,
"0NOTEQUAL": 0x92,
"ADD": 0x93,
"SUB": 0x94,
"MUL": 0x95,
"DIV": 0x96,
"MOD": 0x97,
"LSHIFT": 0x98,
"RSHIFT": 0x99,
"BOOLAND": 0x9a,
"BOOLOR": 0x9b,
"NUMEQUAL": 0x9c,
"NUMEQUALVERIFY": 0x9d,
"NUMNOTEQUAL": 0x9e,
"LESSTHAN": 0x9f,
"GREATERTHAN": 0xa0,
"LESSTHANOREQUAL": 0xa1,
"GREATERTHANOREQUAL": 0xa2,
"MIN": 0xa3,
"MAX": 0xa4,
"WITHIN": 0xa5,
// Crypto ops.
"RIPEMD160": 0xa6,
"SHA1": 0xa7,
"SHA256": 0xa8,
"HASH160": 0xa9,
"HASH256": 0xaa,
"CODESEPARATOR": 0xab,
"CHECKSIG": 0xac,
"CHECKSIGVERIFY": 0xad,
"CHECKMULTISIG": 0xae,
"CHECKMULTISIGVERIFY": 0xaf,
// Expansion ops.
"NOP1": 0xb0,
"NOP2": 0xb1,
"CHECKLOCKTIMEVERIFY": 0xb1,
"NOP3": 0xb2,
"CHECKSEQUENCEVERIFY": 0xb2,
"NOP4": 0xb3,
"NOP5": 0xb4,
"NOP6": 0xb5,
"NOP7": 0xb6,
"NOP8": 0xb7,
"NOP9": 0xb8,
"NOP10": 0xb9,
// Added for Tapscript
"CHECKSIGADD": 0xba,
"INVALIDOPCODE": 0xff,
};
