feat: init single merkle proof - #85
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Signed-off-by: grapebaba <grapebaba@grapebabadeMacBook-Pro.local>
Summary of ChangesHello @GrapeBaBa, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request integrates single Merkle proof capabilities into the persistent Merkle tree system. This enhancement allows users to generate and verify proofs for specific nodes, enabling more granular data verification and reconstruction. The changes provide a foundational mechanism for exporting and validating individual node states without needing the entire tree. Highlights
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Code Review
This pull request introduces support for single Merkle proofs, including functions to create proofs and reconstruct nodes from them. The implementation is accompanied by a comprehensive test suite covering round-trip conversions, consistency, and error cases. The code is well-structured. I've made a few suggestions to improve code clarity and remove unused code: one regarding an unused import, another to simplify an index calculation, and a third to remove an unused error from the public API.
Signed-off-by: grapebaba <grapebaba@grapebabadeMacBook-Pro.local>
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Code Review
This pull request introduces functionality for creating and reconstructing single Merkle proofs. The implementation is robust and accompanied by a comprehensive test suite that covers round-trip verification, consistency across different leaves, and various error scenarios. The code is well-structured and clear. I have one suggestion to slightly refactor the proof creation logic to improve readability and reduce a small amount of code duplication. Overall, this is a solid contribution.
| if (path.left()) { | ||
| const right_id = try node_id.getRight(pool); | ||
| witnesses[witness_index] = right_id.getRoot(pool).*; | ||
| node_id = try node_id.getLeft(pool); | ||
| } else { | ||
| const left_id = try node_id.getLeft(pool); | ||
| witnesses[witness_index] = left_id.getRoot(pool).*; | ||
| node_id = try node_id.getRight(pool); | ||
| } |
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The logic within this if/else block can be simplified to improve readability and reduce code duplication. Since both branches need to access the left and right children of the current node (one for the witness, one for the next step in the traversal), you can fetch both child IDs before the conditional statement.
const left_id = try node_id.getLeft(pool);
const right_id = try node_id.getRight(pool);
if (path.left()) {
witnesses[witness_index] = right_id.getRoot(pool).*;
node_id = left_id;
} else {
witnesses[witness_index] = left_id.getRoot(pool).*;
node_id = right_id;
}
2 participants
Motivation
Provide single-proof support for the persistent Merkle tree so callers can export and reconstruct proofs for individual nodes.
Description
proof.zigwithcreateSingleProofandcreateNodeFromSingleProof, a shared error set, and theSingleProofstruct that takes ownership of witness buffers.proof_test.zigto cover round-trip reconstruction, consistency across leaves, invalid navigation, and invalid gindex scenarios.