Copyright	(c) 2009 Daniel Schoepe
License	BSD3-style (see LICENSE)
Maintainer	Daniel Schoepe <daniel.schoepe@gmail.com>
Stability	unstable
Portability	unportable
Safe Haskell	None
Language	Haskell98

XMonad.Actions.Eval

Contents

Usage
Documentation

Description

Evaluate haskell expressions at runtime in the running xmonad instance.

Synopsis

Usage

This module provides functions to evaluate haskell expressions at runtime To use it, bind a key to evalExpression, for example in combination with a prompt:

import XMonad
import XMonad.Actions.Eval
import XMonad.Prompt.Input
..
  , ((modMask,xK_t), inputPrompt defaultXPConfig "Eval" >>= flip whenJust (evalExpression defaultEvalConfig))

For detailed instructions on editing your key bindings, see XMonad.Doc.Extending.

Documentation

evalExpression :: EvalConfig -> String -> X () Source #

Evaluates a given expression, but discard the returned value. Provided for more convenient use in keybindings

evalExpressionWithReturn :: EvalConfig -> String -> X String Source #

Evaluates a given expression whose result type has to be an instance of Show

data EvalConfig Source #

Configuration structure

Constructors

EvalConfig

Fields

handleError :: InterpreterError -> X String
Function to handle errors
imports :: [(ModuleName, Maybe String)]
Modules to import for interpreting the expression. The pair consists of the module name and an optional qualification of the imported module.
modules :: [String]
Other source files that should be loaded The definitions of these modules will be visible regardless of whether they are exported.

defaultEvalConfig :: EvalConfig Source #

Defaults for evaluating expressions.