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Mission Statement

Expangine is a modern visual programming language with advanced features .

Features

Common features

• Strict type system
• Algebraic data types
• Type inference
• Generics
• Functions are first-class objects
• Interface system
• Operators can be redefined for classes (operator overloading), and new operators can be defined.
• System types
  • Primitive: any, boolean, date, number, text
  • Composite: enum, object, tuple, color, list, map, set
  • Algebraic: tuple, many, not
  • Other: function, optional, null, user-defined type, global data reference

Unique to Expangine

• Automatic refactoring of data, functions, and programs when data types are changed
• Transparent algorithmic and memory complexity for all operations and functions
• Documentation/comments can be attached to types & expressions
• User specified unit testing for any function/operation
• Easily refactor any expression into a reusable function
• Types and expressions are stored as JSON and could be parsed by any language and transformed into a callable function or code in another language.

TODO for v2

• Add comments to Expression and Type
• Remove Comment expression
• Add Log expression that adds message to program log. Accepts any Expr.
• Update Invoke to accept Expression as function name/reference. When it resolves to string, look at global functions. When it resolves to function expression or function object, call it.
• Definitions keeps a list of the types. You can create your own based on an existing type.
• Add global operations, detached from types.
• Each type when registers with Definitions - adds which operations it implements. Simple list of operation names.
• Method expr is a path node that extends Invoke but doesn't have function name, the parent/previous type is the this.
• Add ForEach expression which takes a collection/iterable
• Remove GetEntity?
• Remove GetRelation?
• EntityType is copied to make Named/User/CustomType
• EntityType is renamed RelationalType
• Remove legacy support
• Remove explicit ColorType and add as "user type"
• Add proper Date †ype that doesn't rely on terrible JS Date