Element

Element is a minimal functional programming language. Element code runs using a host which can interpret or compile it to other formats. One of these formats is the bytecode format, LMNTIL (Element Intermediate Language), for use in native and embedded applications.

Element Language

• Single number data type Num
• Structured types using struct
• First class functions and local functions
• Intrinsics (math intrinsics, collection intrinsics, control flow)
• Genericity via Any type

Example:

sum(list) = list.fold(0, Num.add);
factorial(n) = List.range(0, n).fold(1, Num.mul);

For full details see the Element Reference Manual.

Element Libraries

Element includes a core set of functionality in the base library Prelude.

Element also comes with a Standard Library.

Repository Layout

• Laboratory - The Element Host Test Suite - .NET Core 3.0 CLI
  • Test runner using NUnit containing host compliance tests, prelude tests and standard library tests.
  • Can test Element.NET directly or invoke other compilers via CLI convention

Host Libraries

• Element.NET - .NET Standard 2.0
  • Element parser using Lexico
  • Element function evaluation via:
    • Direct evaluation (slow)
    • Compilation to CLR Function using LINQ Expressions (very fast)
  • AoT compilation targets including:
    • LMNTIL
    • C
• libelement - C++
  • Element parser
  • Element function evaluation
  • AoT compilation to:
    • LMNTIL - planned
• LMNT - C
  • LMNTIL interpreter
  • JIT compiler using DynASM
    • x86_64
    • ARMv7-M
    • ARMv7-A - planned

Command Line Interfaces (CLIs)

• Alchemist - .NET Core 3.0 CLI for Element.NET
  • CLI for executing Element via a REPL or compiling to other targets
• libelement.CLI - C++ CLI for libelement
  • CLI for executing Element via a REPL or compiling to other targets

Integrations/Tooling

• Element.Unity - Unity using Element.NET
  • Node Graph - allows visualization and modification of Element code using an interactive Node Graph
  • Debugger - allows evaluating arbitrary Element code and exploring all of the intermediates in a foldout tree
  • Interactive Workspace - allows evaluating arbitrary Element code and displaying immediate intermediates and visualization (Likely to be merged with Debugger in future)
• VSCode Linter - VSCode Extension
  • Syntax highlighting for .ele files
  • Installation guide:
    • Download or clone this repo
    • Extract element-vscode to %UserProfile%/.vscode/extensions
    • Restart VS Code and enjoy!