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When I was learning Haskell, I missed the nice features of IntelliJ IDEA. My first approach was to use the default way of creating an IntelliJ plugin by defining a grammar and a lexer according to Haskell report. That didn't work out because I could not define all the recursion. Then I decided to use grammar and lexer definitions only for tokenizing and parsing Haskell code, and not for syntax checking the code. This is needed for syntax highlighting, all kinds of navigation, and so on. Further Haskell language support is provided with the help of external tools. Show error action to view formatted messages. Useful in case message consists of multiple lines (Ctrl-F10, Meta-F10 on Mac OSX); Intention actions to add language extension (depends on compiler error), add top-level type signature (depends on compiler warning). Intention action to select which module to import if the identifier is not in scope.
Features
- This plugin depends mainly on Stack. It can create new Stack projects and import existing Stack projects
- GHC 8.2.2 and later is supported
- Syntax highlighting
- Haskell Problems View. This tool window displays GHC messages for the currently edited files
- Resolve references to identifiers
- View type info from (selected) expression
- View quick documentation
Project Samples
