Fig is a statically-typed, expression-oriented programming language designed for clarity, safety, and modern development practices. With features inspired by Go, Rust, and JavaScript, Fig aims to provide a productive development experience while maintaining strong type safety.

Features

🚀 Core Language Features

Static typing with type inference - Strong typing with minimal annotations
Modern control flow - Full for loop support with proper scoping
First-class functions - Lambda expressions and closures
Rich data structures - Structs, lists, maps, and tuples
Memory safety - No null pointer exceptions, automatic memory management

🔧 Technical Highlights

Three-level scoping for loops - Proper variable isolation in iterations
Smart semicolon handling - Flexible statement termination with RAII guards
Comprehensive error handling - Detailed error messages with source locations
Clean C++ implementation - Modern C++23 with RAII and smart pointers

🔧 Install

Installation

Prerequisites

Xmake version 3.0.0 or higher must be installed on your system.

Build Instructions

Clone the repository:

git clone https://github.com/PuqiAR/Fig.git

Navigate to the project directory:

cd Fig

Build the project:

xmake build Fig

Run the program:

xmake run Fig [file]

Replace [file] with the path to your input file.

📁 Project Structure

. ├── ExampleCodes # Example programs & performance tests │ └── SpeedTest # Performance benchmark samples ├── LICENSE # Project license ├── Logo # Project logo assets ├── README.md # English README ├── README_ZH-CN.md # Chinese README ├── compile_flags.txt # Compiler flags helper ├── fig-vscode # VSCode extension project │ ├── node_modules # Extension dependencies │ ├── out # Built extension output │ ├── src # Extension source code │ └── syntaxes # Syntax highlighting definition ├── src # Core Fig language source │ ├── Ast # AST definitions │ ├── Context # Runtime context │ ├── Core # Core utilities (UTF8/string/etc.) │ ├── Error # Error handling system │ ├── Evaluator # Interpreter / evaluator │ ├── Lexer # Lexical analyzer │ ├── Module # Modules and builtins │ ├── Parser # Parser │ ├── Token # Token definitions │ ├── Utils # Utilities & helper headers │ └── Value # Runtime type/value system ├── test.fig # Test script └── xmake.lua # Xmake build config

Language Philosophy

Fig is designed around several core principles:

Clarity over cleverness - Code should be readable first

Safety by default - Prevent common errors at compile time

Modern ergonomics - Developer experience matters

Gradual learning - Simple to start, powerful when needed