refactor decode

[Invokedzz]

Description

Refactor in order to improve legibility and understanding of ValueDecoder.class

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Refactoring (no functional changes)
• Performance improvement
• Test coverage improvement

Related Issues

Closes #

Changes Made

• Refactored ValueDecoder.class;
• Wrote some tests for the new classes created.

SPEC Compliance

• This PR implements/fixes spec compliance
• Spec section(s) affected:
• Spec version:

Testing

• All existing tests pass
• Added new tests for changes
• Tested on Java 17
• Tested on Java 21

Test Output

# Paste test output here

Code Quality

• Ran ./gradlew test - all tests pass
• Ran ./gradlew jacocoTestCoverageVerification - coverage meets 85% threshold
• Added JavaDoc comments for public APIs
• Code follows Java conventions

Checklist

• My code follows the project's coding standards
• I have added JavaDoc comments to new public APIs
• I have added JUnit tests that prove my fix/feature works
• New and existing tests pass locally
• I have updated documentation (README.md if needed)
• My changes do not introduce new dependencies (or are justified)
• I have maintained Java 17+ compatibility
• I have reviewed the TOON specification for relevant sections

Performance Impact

• No performance impact
• Performance improvement (describe below)
• Potential performance regression (describe and justify below)

Breaking Changes

• No breaking changes
• Breaking changes (describe migration path below)

Screenshots / Examples

// Example usage

Output:

# Example output

Additional Context

Checklist for Reviewers

• Code changes are clear and well-documented
• Tests adequately cover the changes
• Documentation is updated
• No security concerns
• Follows TOON specification
• Backward compatible (or breaking changes are justified and documented)

[github-actions]

Code Coverage

Overall Project	94.52% -4.36%	🍏
Files changed	90.31%	🍏

File	Coverage
DecodeContext.java	100%	🍏
ArrayDecoder.java	97.12% -2.88%	🍏
DecodeParser.java	94.31% -5.69%	🍏
KeyDecoder.java	90.67% -9.33%	🍏
ListItemDecoder.java	90% -10%	🍏
TabularArrayDecoder.java	88.84% -11.16%	🍏
ObjectDecoder.java	86.16% -13.84%	🍏
DecodeHelper.java	85.54% -14.46%	🍏
ValueDecoder.java	85.06%	🍏
Headers.java	76.92% -23.08%	🍏