feat: add cognitive complexity analysis for Java

[askpt]

Implements Java support via tree-sitter-java@0.21.0, closing #238, #292

[Copilot]

Pull request overview

Adds Java support to the VS Code extension’s cognitive complexity analysis by introducing a Tree-sitter-based Java analyzer, wiring it into the analyzer factory and extension activation, and adding initial Java-focused tests and sample code.

Changes:

• Added JavaMetricsAnalyzer using tree-sitter-java to compute method-level cognitive complexity.
• Registered the Java analyzer in MetricsAnalyzerFactory and enabled activation for onLanguage:java.
• Added Java analyzer unit tests and a Java sample file; added tree-sitter-java dependency.

Reviewed changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/metricsAnalyzer/languages/javaAnalyzer.ts	New Tree-sitter Java analyzer for computing cognitive complexity and per-construct detail records.
src/metricsAnalyzer/metricsAnalyzerFactory.ts	Registers the Java analyzer under language id java.
src/test/metricsAnalyzer/languages/javaAnalyzer.test.ts	Adds unit tests validating Java method detection and complexity increments for common constructs.
samples/Test.java	Adds a sample Java file for manual validation in the extension host.
package.json	Adds tree-sitter-java dependency and activates extension on Java files; updates keywords.
package-lock.json	Locks tree-sitter-java package content, but currently has an inconsistent top-level spec.

[askpt]

@copilot Fix the unit tests. Also add the new Java information to the README.

[askpt]

@copilot apply changes based on the comments in this thread

[Copilot]

@copilot Fix the unit tests. Also add the new Java information to the README.

Implemented in 520569c (with core behavior/test update in c8fca2e). I fixed the Java unit coverage (including if/else and else-if expectations) and updated README language support/details to include Java.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• update.code.visualstudio.com
  • Triggering command: /opt/hostedtoolcache/node/22.22.2/x64/bin/node node /home/REDACTED/work/code-metrics/code-metrics/node_modules/.bin/vscode-test (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

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[Copilot]

@copilot apply changes based on the comments in this thread

Applied in e459749. I addressed the actionable item from that review thread by syncing package-lock.json with package.json (removing stale ^ specifiers for tree-sitter-java and @typescript-eslint/*). Validation passed (compile, lint, test:unit, and PR review checks). No UI changes in this update, so no screenshot applies.

[askpt]

@copilot the build is still failing in the GitHub actions. Fix it please.

[Copilot]

@copilot the build is still failing in the GitHub actions. Fix it please.

Fixed in ac206e2. The CI failure was from Java Metrics Analyzer Tests -> should analyze constructor (constructor bodies were skipped because Java constructors use constructor_body, not block). I updated the analyzer to include constructor_body, and validation now passes locally (compile, Java analyzer test file, lint, test:unit) plus review/security checks. No UI changes in this fix, so no screenshot applies.

[codecov]

Codecov Report

❌ Patch coverage is 88.66667% with 51 lines in your changes missing coverage. Please review.
✅ Project coverage is 69.54%. Comparing base (7e453f8) to head (ac206e2).

Files with missing lines	Patch %	Lines
src/metricsAnalyzer/languages/javaAnalyzer.ts	88.64%	51 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #296      +/-   ##
==========================================
+ Coverage   66.24%   69.54%   +3.30%     
==========================================
  Files           9       10       +1     
  Lines        2604     3054     +450     
  Branches      224      287      +63     
==========================================
+ Hits         1725     2124     +399     
- Misses        878      929      +51     
  Partials        1        1              

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