Files
SwiftLint/Source/SwiftLintBuiltInRules/Rules
JP Simard f7f3caa50e Migrate TrailingWhitespaceRule from SourceKit to SwiftSyntax (#6117)
## Summary

Convert TrailingWhitespaceRule to use SwiftSyntax instead of SourceKit
for improved performance and better handling of trailing whitespace
detection, especially within block comments.

## Key Technical Improvements

- **Enhanced block comment detection** distinguishing between lines fully
  covered by block comments vs lines containing block comments with code
- **Accurate whitespace detection** using CharacterSet.whitespaces for
  all Unicode whitespace characters, not just space and tab
- **Improved comment handling** with proper detection of line-ending
  comments and multi-line block comment structures
- **Better correction mechanism** using ViolationCorrection ranges
  instead of manual string reconstruction
- **Line-based analysis** maintaining efficiency while providing precise
  violation positions

## Migration Details

- Replaced `CorrectableRule` with `@SwiftSyntaxRule(correctable: true)`
- Implemented `ViolationsSyntaxVisitor` pattern for line-based validation
- Added `collectLinesFullyCoveredByBlockComments` to properly handle
  test framework comment wrapping scenarios
- Distinguished between three comment scenarios: lines fully within block
  comments, full-line comments, and lines ending with comments
- Maintained all configuration options (ignores_empty_lines, ignores_comments)
- Preserved exact violation position reporting with UTF-8 offset calculations
2025-06-24 21:12:32 -04:00
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