change: use AHashMap instead

[shenxiangzhuang]

Summary by CodeRabbit

• Performance Improvement
  • Enhanced n-gram token counting performance by switching to a more efficient hashing algorithm.

[coderabbitai]

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Commits

Files that changed from the base of the PR and between 14fd079 and 35bceae.

Walkthrough

The optimization in src/ngram.rs involves replacing HashMap with AHashMap from the ahash crate in the get_token_ngram_counter function. This change is designed to boost performance by utilizing the faster hashing algorithm of ahash. The function's return type and internal map type have been adjusted to accommodate this enhancement.

Changes

File	Change Summary
src/ngram.rs	Updated get_token_ngram_counter to use AHashMap instead of HashMap from std::collections. Adjusted the return type and internal map declaration accordingly.

🐇
In the land of code, a swift change we see,
AHashMap now reigns where HashMap used to be.
Faster and leaner, it counts with great speed,
For n-grams of tokens, it's just what we need.
Hopping through data, like a rabbit so spry,
Our functions now soar, reaching the sky!
🐇

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.05%. Comparing base (97da600) to head (5f6b4b6).

❗ Current head 5f6b4b6 differs from pull request most recent head 35bceae. Consider uploading reports for the commit 35bceae to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #45   +/-   ##
=======================================
  Coverage   85.05%   85.05%           
=======================================
  Files           4        4           
  Lines         368      368           
=======================================
  Hits          313      313           
  Misses         55       55           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[coderabbitai]

Actionable comments posted: 0

Review Details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between 97da600 and 0d47640.

Files selected for processing (1)

• src/ngram.rs (1 hunks)

Additional comments not posted (3)

src/ngram.rs (3)

2-2: Ensure ahash crate is included in Cargo.toml.

Verify that the ahash crate is included in the Cargo.toml file to ensure the AHashMap type is available.

Verification successful

---

The ahash crate is included in the Cargo.toml file with version 0.8.11, ensuring that the AHashMap type is available for use.

Scripts Executed

The following scripts were executed for the analysis:

---

Script:

#!/bin/bash
# Description: Verify that the `ahash` crate is included in `Cargo.toml`.

# Test: Search for the `ahash` crate in `Cargo.toml`. Expect: The crate should be listed.
rg --type toml 'ahash' Cargo.toml

Length of output: 50

---

6-7: Update function signature and map initialization to use AHashMap.

The function signature and map initialization have been correctly updated to use AHashMap from the ahash crate. Ensure all function calls match the new return type.

---

Line range hint 18-18: Ensure test cases are compatible with AHashMap.

Verify that the test cases for get_token_ngram_counter are compatible with the changes made to use AHashMap.

[coderabbitai]

Actionable comments posted: 0

Review Details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between 0d47640 and 14fd079.

Files selected for processing (1)

• src/ngram.rs (1 hunks)

Files skipped from review as they are similar to previous changes (1)

• src/ngram.rs