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https://github.com/mimblewimble/grin.git
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53414ae105
* use 0-based positions in methods pmmr_leaf_to_insertion_index and bintree_postorder_height; add round_up_to_leaf_pos method
* use 0-based positions in method insertion_to_pmmr_index
* use 0-based positions in method is_leaf
* use 0-based positions in method family()
* use 0-based positions in method is_left_sibling
* use 0-based positions in method family_branch
* use 0-based positions in methods bintree_{left,right}most
* use 0-based positions in method bintree_pos_iter
* use 0-based positions in method bintree_range
* use 0-based positions in method bintree_leaf_pos_iter
* rename last_pos in MMR related structs to size
* use 0-based positions in method prune
* use 0-based positions in method push and apply_output return value
* use 0-based position argument of method merkle_proof
* use 0-based outputs in method pmmr::peaks
* fix peaks() code comments
* refix peaks() code comments
* use 0-based positions in method get_peak_from_file
* use 0-based positions in methods get_data_from_file
* use 0-based positions in methods get_from_file
* use 0-based positions in methods get_data
* use 0-based positions in methods get_hash
* use 0-based positions in method peak_path
* use 0-based positions in method bag_the_rhs
* use 0-based positions in method Backend::remove
* use 0-based positions in method leaf_pos_iter
* use 0-based positions in method self.LeafSet::includes
* use 0-based positions in methods self.LeafSet::{add,remove}
* use 0-based positions in methods is_pruned,is_pruned_root,is_compacted
* use 0-based positions in methods PruneList::append
* use 0-based positions in methods append_pruned_subtree
* use 0-based positions in method calculate_next_leaf_shift
* use 0-based positions in method append_single
* use 0-based positions in method calculate_next_shift
* use 0-based positions in method segment_pos_range
* use 0-based positions in method reconstruct_root
* use 0-based positions in method validate_with
* use 0-based positions in method validate
* rename size (formerly last_pos) to mmr_size
* use 0-based positions in Segment's hash_pos and leaf_pos
* minimize use of saturating_sub(1) and rename some pos/idx to size
* use 0-based positions in methods get_output_pos
* use 0-based positions in method get_unspent_output_at
* use 0-based positions in method get_header_hash
* use 0-based positions in methods MerkleProof::verify{,_consume}
* use 0-based positions in method cleanup_subtree
* don't allow 0 in prunelist bitmap
* use 0-based positions in methods get_{,leaf_}shift
* rename some 1-based pos to pos1; identify TODO
* Address yeastplume's PR review comments
61 lines
2 KiB
Rust
61 lines
2 KiB
Rust
// Copyright 2021 The Grin Developers
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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mod common;
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use self::core::core::pmmr;
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use self::core::core::{Segment, SegmentIdentifier};
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use common::TestElem;
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use grin_core as core;
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use grin_core::core::pmmr::ReadablePMMR;
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fn test_unprunable_size(height: u8, n_leaves: u32) {
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let size = 1u64 << height;
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let n_segments = (n_leaves as u64 + size - 1) / size;
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// Build an MMR with n_leaves leaves
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let mut ba = pmmr::VecBackend::new();
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let mut mmr = pmmr::PMMR::new(&mut ba);
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for i in 0..n_leaves {
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mmr.push(&TestElem([i / 7, i / 5, i / 3, i])).unwrap();
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}
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let mmr = mmr.readonly_pmmr();
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let last_pos = mmr.unpruned_size();
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let root = mmr.root().unwrap();
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for idx in 0..n_segments {
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let id = SegmentIdentifier { height, idx };
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let segment = Segment::from_pmmr(id, &mmr, false).unwrap();
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println!(
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"\n\n>>>>>>> N_LEAVES = {}, LAST_POS = {}, SEGMENT = {}:\n{:#?}",
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n_leaves, last_pos, idx, segment
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);
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if idx < n_segments - 1 || (n_leaves as u64) % size == 0 {
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// Check if the reconstructed subtree root matches with the hash stored in the mmr
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let subtree_root = segment.root(last_pos, None).unwrap().unwrap();
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let last = pmmr::insertion_to_pmmr_index((idx + 1) * size - 1) + (height as u64);
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assert_eq!(subtree_root, mmr.get_hash(last).unwrap());
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println!(" ROOT OK");
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}
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segment.validate(last_pos, None, root).unwrap();
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println!(" PROOF OK");
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}
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}
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#[test]
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fn unprunable_mmr() {
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for i in 1..=64 {
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test_unprunable_size(3, i);
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}
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}
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