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Add Script:dust_value() to get minimum output value for a spk

This commit is contained in:
Matt Corallo 2021-02-05 14:47:47 -05:00
parent cf45a61070
commit 6622de4041
1 changed files with 20 additions and 0 deletions
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20
src/blockdata/script.rs
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@ -325,6 +325,26 @@ impl Script {
opcodes::All::from(self.0[0]).classify() == opcodes::Class::IllegalOp) opcodes::All::from(self.0[0]).classify() == opcodes::Class::IllegalOp)
} }
/// The minimum value an output to a witness script must have in order to be
/// broadcastable on today's bitcoin network.
pub const WITNESS_OUTPUT_DUST_THRESHOLD: u64 = 294;
/// The minimum value an output to a non-witness script must have in order to be
/// broadcastable on today's bitcoin network.
pub const LEGACY_OUTPUT_DUST_THRESHOLD: u64 = 546;
/// Gets the minimum value an output with this script should have in order to be
/// broadcastable on today's bitcoin network.
pub fn dust_value(&self) -> u64 {
if self.is_op_return() {
0
} else if self.is_witness_program() {
Self::WITNESS_OUTPUT_DUST_THRESHOLD
} else {
Self::LEGACY_OUTPUT_DUST_THRESHOLD
}
}
/// Iterate over the script in the form of `Instruction`s, which are an enum covering /// Iterate over the script in the form of `Instruction`s, which are an enum covering
/// opcodes, datapushes and errors. At most one error will be returned and then the /// opcodes, datapushes and errors. At most one error will be returned and then the
/// iterator will end. To instead iterate over the script as sequence of bytes, treat /// iterator will end. To instead iterate over the script as sequence of bytes, treat