73 lines
2.8 KiB
Rust
73 lines
2.8 KiB
Rust
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use std::error;
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use std::fmt;
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use blockdata::transaction::Transaction;
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/// Ways that a Partially Signed Transaction might fail.
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#[derive(Debug)]
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pub enum Error {
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/// Magic bytes for a PSBT must be the ASCII for "psbt" serialized in most
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/// significant byte order.
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InvalidMagic,
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/// The separator for a PSBT must be `0xff`.
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InvalidSeparator,
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/// Known keys must be according to spec.
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InvalidKey,
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/// Keys within key-value map should never be duplicated.
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DuplicateKey,
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/// The scriptSigs for the unsigned transaction must be empty.
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UnsignedTxHasScriptSigs,
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/// The scriptWitnesses for the unsigned transaction must be empty.
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UnsignedTxHasScriptWitnesses,
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/// A PSBT must have an unsigned transaction.
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MustHaveUnsignedTx,
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/// Signals that there are no more key-value pairs in a key-value map.
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NoMorePairs,
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/// Attempting to merge with a PSBT describing a different unsigned
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/// transaction.
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UnexpectedUnsignedTx {
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/// Expected
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expected: Transaction,
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/// Actual
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actual: Transaction,
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},
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/// Unable to parse as a standard SigHash type.
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NonStandardSigHashType(u32),
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}
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impl fmt::Display for Error {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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match *self {
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Error::UnexpectedUnsignedTx { expected: ref e, actual: ref a } => write!(f, "{}: expected {}, actual {}", error::Error::description(self), e.txid(), a.txid()),
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Error::NonStandardSigHashType(ref sht) => write!(f, "{}: {}", error::Error::description(self), sht),
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Error::InvalidMagic
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| Error::InvalidSeparator
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| Error::InvalidKey
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| Error::DuplicateKey
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| Error::UnsignedTxHasScriptSigs
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| Error::UnsignedTxHasScriptWitnesses
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| Error::MustHaveUnsignedTx
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| Error::NoMorePairs => f.write_str(error::Error::description(self))
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}
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}
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}
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impl error::Error for Error {
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fn description(&self) -> &str {
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match *self {
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Error::InvalidMagic => "invalid magic",
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Error::InvalidSeparator => "invalid separator",
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Error::InvalidKey => "invalid key",
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Error::DuplicateKey => "duplicate key",
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Error::UnsignedTxHasScriptSigs => "the unsigned transaction has script sigs",
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Error::UnsignedTxHasScriptWitnesses => "the unsigned transaction has script witnesses",
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Error::MustHaveUnsignedTx => {
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"partially signed transactions must have an unsigned transaction"
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}
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Error::NoMorePairs => "no more key-value pairs for this psbt map",
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Error::UnexpectedUnsignedTx { .. } => "different unsigned transaction",
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Error::NonStandardSigHashType(..) => "non-standard sighash type",
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}
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}
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}
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