style(InputTextStream): Use std::unique_ptr<std::ifstream>

[N-Dekker]

Avoided manual memory management. Followed the C++ Rule of Zero, by removing the user declared default-constructor and destructor of InputTextStream.

[Copilot]

Pull Request Overview

This PR modernizes the InputTextStream class by replacing manual memory management with std::unique_ptr<std::ifstream>. The changes eliminate the need for explicit destructor and constructor declarations, following the C++ Rule of Zero principle.

• Replaced raw pointer and boolean flag with std::unique_ptr<std::ifstream>
• Removed manual new/delete operations and associated tracking logic
• Simplified the class interface by removing user-declared constructor and destructor

[Copilot]

The file stream is created without checking if the file was successfully opened. Consider adding error handling to verify the stream state after creation, or document that callers should check the stream state via GetPointer().

Suggested change

	m_InputFileStream = std::make_unique<std::ifstream>(fileName);
	m_InputFileStream = std::make_unique<std::ifstream>(fileName);
	if (!m_InputFileStream->is_open())
	{
	throw std::ios_base::failure("Failed to open file: " + fileName);
	}

[Copilot]

[nitpick] Consider adding the std::ifstream::in flag for consistency with the previous implementation, even though it's the default for ifstream: std::make_unique<std::ifstream>(fileName, std::ifstream::in)

Suggested change

	m_InputFileStream = std::make_unique<std::ifstream>(fileName);
	m_InputFileStream = std::make_unique<std::ifstream>(fileName, std::ifstream::in);

[N-Dekker]

This pull request (#1425) is superseded by the following pull request:

• style: Use std::unique_ptr<std::istream> in InputStreamBase #1432