Release 5.0-LL1Checker

LL1Checker v5.0 Release 🎉

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✨ What’s New

• Caret-guided error windows: both the Boost.Spirit-powered lexer and parser now print multi-line snippets with a caret (^) pointing at the failing token.
• Parse tree exports: pass --export-tree tree.dot to generate the full derivation tree in Graphviz format.
  Example: dot -Tpng tree.dot -o output.png
• Numeric token IDs: symbol table, lexer, and parser now share compact numeric identifiers, reducing memory footprint on large grammars.

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💻 Compatibility & Requirements

• Linux: tested on modern distributions with:
  • C++20 toolchain
  • CMake ≥ 3.16
  • Boost headers (1.78+)
  • cxxopts (auto-fetched if missing)
• Windows: prebuilt binaries are not included in this release.
  You can still build from source with the required dependencies.
  A Windows package may return in a future update.

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📥 Installation & Usage

Build from source

cmake -S . -B build
cmake --build build
# or simply:
make
# static runtime:
make static  # adds -DLL1CHECKER_FORCE_STATIC_RUNTIME=ON

Run the CLI:

./ll1 <GRAMMAR_FILENAME> [TEXT_FILENAME] [OPTIONS]

This release provides a statically linked binary for Linux users.

Release 3.0-LL1Checker

LL1Checker v3.0 Release 🎉

This release introduces version 3.0 of the LL(1) parser tool, now available as a pre-compiled binary for Linux and Windows.
Designed to assist students and developers in understanding and working with LL(1) grammars, this version enhances robustness, performance, and visualization.

✨ What's New?

• New table format using tabulate, improving readability and structure.
• No longer relies on flex for lexical analysis, making the tool more self-contained and efficient.
• Better handling of ambiguous grammars, improving feedback and error detection.
• Optimized performance, reducing execution time for large grammars and inputs.

💻 Compatibility and Requirements

• Linux: Works on most modern Linux distributions. The binary was compiled using Ubuntu 22 and the boost libraries are statically linked, so you do not need to have them.
• Windows: Windows 10 or later is required.

📥 Installation and Usage

Linux Binary

Download and run:

chmod +x ll1
./ll1

Windows Executable

Download ll1.exe and run it from any terminal.

🙌 Acknowledgments

Special thanks to tabulate for providing a clean and efficient way to display tables in the terminal.

Release 2.0 -LL1Checker

This release features the version 2.0 of the LL(1) parser tool, now available as a pre-compiled binary. Designed to assist students and developers in understanding and working with LL(1) grammars, this refined version enchances the application capabilities for analyzing, and validating grammars and inputs.

Requirements

• flex needs to be installed in your OS and in your PATH. If you are on windows, winflexbison is used, the folder must be in your PATH.
• gcc needs to be installed and in your PATH

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Installation and Usage

1. Executable Binary (Linux)

• Simply download and execute with ./ll1. Make sure the file has execution permissions (chmod +x ll1)

2. Debian Package (.deb)

• Install with sudo dpkg -i <debian_package>. After installation, run ll1 from any terminal.

3. RPM Package (.rpm)

• Install with sudo dnf install <rpm_package>.

4. Windows Executable (.exe)

• Download and run LL1.exe from any terminal.

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Acknowledgments
A special thank you to the creators of winflex_bison https://github.com/lexxmark/winflexbison for their Windows port.