eiffel-idea

IntelliJ IDEA plugin for Eiffel language support

Current status

Still under somewhat-active development (see last commit to see if it's still maintaned)

How to install

• Download latest plugin release from releases page
• Download Eiffel GOBO (we currently support only this one)
  • (Windows) Download Microsoft Visual Studio C++
  • (*nix) Download any C compiler that you like (chances are, you need to write apt install g++ or brew install g++ if you don't know what that means)
• Build GOBO using your C compiler (refer to GOBO website for further instructions)
• Install plugin using IDEA standard menu (IDEA -> Preferences -> Plugins -> Install from disk -> Select zip file)
• Create new Eiffel project in IDEA (you won't miss its menu option)
• Press Plus (Add new SDK) and select Eiffel GOBO SDK
  • (Windows) Customize the full path to Microsoft VS home
• When creating procedure is done, go Run -> Edit configurations... and add Eiffel GOBO configuration using plus button
• Enjoy! (Windows building may still be sometimes incorrect as a result of lack of Windows testers)

What is done

• Kinda-full EBNF syntax (as of 2006 ECMA-367 with some additions) with parser by Grammar-Kit
• Lexer for keywords and symbols
• Syntax highlighting for keywords, literals, builtin types
• Building support through GEC
• Feature name completion with client visibility support (still under testing, but seems to work fine)
• Project-wide and library-wide class name completion

Extensions of ECMA-367

• Integer ranges using |..| binary operation.
• Across-type boolean iteration in assertion clauses.

Both of the above can be shown on this example

...
ensure
    across 
        1 |..| n
    as
        it
    all
        it.item <= n
    end
end

• Array literal expressions

Example:

local
    a: ARRAY [INTEGER]
do
    a := << 1, 2, 3, 4, 5 >>
end

What is currently being done or WIP (but may be for the time being)

• Project Wizard
• Formatting (kinda done, but still some minor issues)

What is not done (needs to be done)

• Context-aware highlighting
• Analysis