class ScriptError(Exception):
'''Exception used for script errors.'''
OpCodes = Enumeration(
"Opcodes",
[("OP_0", 0), ("OP_PUSHDATA1", 76), "OP_PUSHDATA2", "OP_PUSHDATA4",
"OP_1NEGATE", "OP_RESERVED", "OP_1", "OP_2", "OP_3", "OP_4", "OP_5",
"OP_6", "OP_7", "OP_8", "OP_9", "OP_10", "OP_11", "OP_12", "OP_13",
"OP_14", "OP_15", "OP_16", "OP_NOP", "OP_VER", "OP_IF", "OP_NOTIF",
"OP_VERIF", "OP_VERNOTIF", "OP_ELSE", "OP_ENDIF", "OP_VERIFY",
"OP_RETURN", "OP_TOALTSTACK", "OP_FROMALTSTACK", "OP_2DROP", "OP_2DUP",
"OP_3DUP", "OP_2OVER", "OP_2ROT", "OP_2SWAP", "OP_IFDUP", "OP_DEPTH",
"OP_DROP", "OP_DUP", "OP_NIP", "OP_OVER", "OP_PICK", "OP_ROLL", "OP_ROT",
"OP_SWAP", "OP_TUCK", "OP_CAT", "OP_SUBSTR", "OP_LEFT", "OP_RIGHT",
"OP_SIZE", "OP_INVERT", "OP_AND", "OP_OR", "OP_XOR", "OP_EQUAL",
"OP_EQUALVERIFY", "OP_RESERVED1", "OP_RESERVED2", "OP_1ADD", "OP_1SUB",
"OP_2MUL", "OP_2DIV", "OP_NEGATE", "OP_ABS", "OP_NOT", "OP_0NOTEQUAL",
"OP_ADD", "OP_SUB", "OP_MUL", "OP_DIV", "OP_MOD", "OP_LSHIFT",
"OP_RSHIFT", "OP_BOOLAND", "OP_BOOLOR", "OP_NUMEQUAL",
"OP_NUMEQUALVERIFY", "OP_NUMNOTEQUAL", "OP_LESSTHAN", "OP_GREATERTHAN",
"OP_LESSTHANOREQUAL", "OP_GREATERTHANOREQUAL", "OP_MIN", "OP_MAX",
"OP_WITHIN", "OP_RIPEMD160", "OP_SHA1", "OP_SHA256", "OP_HASH160",
"OP_HASH256", "OP_CODESEPARATOR", "OP_CHECKSIG", "OP_CHECKSIGVERIFY",
"OP_CHECKMULTISIG", "OP_CHECKMULTISIGVERIFY", "OP_NOP1",
"OP_CHECKLOCKTIMEVERIFY", "OP_CHECKSEQUENCEVERIFY"])
# Paranoia to make it hard to create bad scripts
assert OpCodes.OP_DUP == 0x76
assert OpCodes.OP_HASH160 == 0xa9
assert OpCodes.OP_EQUAL == 0x87
opcodes = Enumeration("Opcodes", [
("OP_0", 0),
("OP_PUSHDATA1", 76),
"OP_PUSHDATA2",
"OP_PUSHDATA4",
"OP_1NEGATE",
"OP_RESERVED",
"OP_1",
"OP_2",
"OP_3",
"OP_4",
"OP_5",
"OP_6",
"OP_7",
"OP_8",
"OP_9",
"OP_10",
"OP_11",
"OP_12",
"OP_13",
"OP_14",
"OP_15",
"OP_16",
"OP_NOP",
"OP_VER",
"OP_IF",
"OP_NOTIF",
"OP_VERIF",
"OP_VERNOTIF",
"OP_ELSE",
"OP_ENDIF",
"OP_VERIFY",
"OP_RETURN",
"OP_TOALTSTACK",
"OP_FROMALTSTACK",
"OP_2DROP",
"OP_2DUP",
"OP_3DUP",
"OP_2OVER",
"OP_2ROT",
"OP_2SWAP",
"OP_IFDUP",
"OP_DEPTH",
"OP_DROP",
"OP_DUP",
"OP_NIP",
"OP_OVER",
"OP_PICK",
"OP_ROLL",
"OP_ROT",
"OP_SWAP",
"OP_TUCK",
"OP_CAT",
"OP_SUBSTR",
"OP_LEFT",
"OP_RIGHT",
"OP_SIZE",
"OP_INVERT",
"OP_AND",
"OP_OR",
"OP_XOR",
"OP_EQUAL",
"OP_EQUALVERIFY",
"OP_RESERVED1",
"OP_RESERVED2",
"OP_1ADD",
"OP_1SUB",
"OP_2MUL",
"OP_2DIV",
"OP_NEGATE",
"OP_ABS",
"OP_NOT",
"OP_0NOTEQUAL",
"OP_ADD",
"OP_SUB",
"OP_MUL",
"OP_DIV",
"OP_MOD",
"OP_LSHIFT",
"OP_RSHIFT",
"OP_BOOLAND",
"OP_BOOLOR",
"OP_NUMEQUAL",
"OP_NUMEQUALVERIFY",
"OP_NUMNOTEQUAL",
"OP_LESSTHAN",
"OP_GREATERTHAN",
"OP_LESSTHANOREQUAL",
"OP_GREATERTHANOREQUAL",
"OP_MIN",
"OP_MAX",
"OP_WITHIN",
"OP_RIPEMD160",
"OP_SHA1",
"OP_SHA256",
"OP_HASH160",
"OP_HASH256",
"OP_CODESEPARATOR",
"OP_CHECKSIG",
"OP_CHECKSIGVERIFY",
"OP_CHECKMULTISIG",
"OP_CHECKMULTISIGVERIFY",
"OP_NOP1",
"OP_NOP2",
"OP_NOP3",
"OP_NOP4",
"OP_NOP5",
"OP_CLAIM_NAME",
"OP_SUPPORT_CLAIM",
"OP_UPDATE_CLAIM",
("OP_SINGLEBYTE_END", 0xF0),
("OP_DOUBLEBYTE_BEGIN", 0xF000),
"OP_PUBKEY",
"OP_PUBKEYHASH",
("OP_INVALIDOPCODE", 0xFFFF),
])