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

evalExpression :: EvalConfig -> String -> X ()
evalExpressionWithReturn :: EvalConfig -> String -> X String
data EvalConfig = EvalConfig {
- handleError :: InterpreterError -> X String
- imports :: [(ModuleName, Maybe String)]
- modules :: [String]
}
defaultEvalConfig :: EvalConfig

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.