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Define get_data_from_file function on ReadablePMMR trait (#3464)

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jaspervdm 2020-10-07 14:09:27 +02:00 committed by GitHub
parent e7bbda81a0
commit 4c6d1dd4bd
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2 changed files with 19 additions and 0 deletions
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11
core/src/core/pmmr/pmmr.rs
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@ -40,6 +40,9 @@ pub trait ReadablePMMR {
/// Get the hash from the underlying MMR file (ignores the remove log). /// Get the hash from the underlying MMR file (ignores the remove log).
fn get_from_file(&self, pos: u64) -> Option<Hash>; fn get_from_file(&self, pos: u64) -> Option<Hash>;
/// Get the data element at provided position in the MMR (ignores the remove log).
fn get_data_from_file(&self, pos: u64) -> Option<Self::Item>;
/// Total size of the tree, including intermediary nodes and ignoring any pruning. /// Total size of the tree, including intermediary nodes and ignoring any pruning.
fn unpruned_size(&self) -> u64; fn unpruned_size(&self) -> u64;
@ -412,6 +415,14 @@ where
} }
} }
fn get_data_from_file(&self, pos: u64) -> Option<Self::Item> {
if pos > self.last_pos {
None
} else {
self.backend.get_data_from_file(pos)
}
}
fn unpruned_size(&self) -> u64 { fn unpruned_size(&self) -> u64 {
self.last_pos self.last_pos
} }

8
core/src/core/pmmr/readonly_pmmr.rs
View file

@ -148,6 +148,14 @@ where
} }
} }
fn get_data_from_file(&self, pos: u64) -> Option<Self::Item> {
if pos > self.last_pos {
None
} else {
self.backend.get_data_from_file(pos)
}
}
fn unpruned_size(&self) -> u64 { fn unpruned_size(&self) -> u64 {
self.last_pos self.last_pos
} }