command-qq: Quasiquoters for external commands
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Features:
Quasiquotation syntax for external interpreters
>>> [sh_| echo hello world! |] hello world!
Custom quasiquoters
ghci = quoter $ callCommand "ghc" ["-ignore-dot-ghci", "-e"]
Then you can use ghci in ghci!
>>> [ghci| putStrLn "hello world!" |] :: IO () hello world!
For more examples, see examples/CustomQQ.hs
Haskell values embedding
See README.md for an example
DSLs
See examples/CommandT.hs
[Skip to Readme]
Properties
| Versions | 0.1.0.0, 0.2.0.0, 0.2.0.0, 0.2.1.0, 0.2.2.0, 0.3.0.0, 0.3.1.0 |
|---|---|
| Change log | CHANGELOG.md |
| Dependencies | base (>=4 && <5), process, template-haskell, text [details] |
| License | BSD-3-Clause |
| Author | Matvey Aksenov |
| Maintainer | matvey.aksenov@gmail.com |
| Category | System |
| Home page | http://biegunka.github.io/command-qq/ |
| Source repo | head: git clone https://github.com/biegunka/command-qq |
| Uploaded | by MatveyAksenov at 2013-12-13T07:17:40Z |
Modules
[Index]
Downloads
- command-qq-0.2.0.0.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)
Maintainer's Corner
Package maintainers
For package maintainers and hackage trustees
Readme for command-qq-0.2.0.0
[back to package description]command-qq
>>> import System.Command.QQ
>>> putStr =<< unlines . reverse . lines <$> [sh|cowsay "Hello, I am command-qq!"|]
|| ||
||----w |
(__)\ )\/\
\ (oo)\_______
\ ^__^
-------------------------
< Hello, I am command-qq! >
_________________________
Install
% cabal install command-qq
Features
Quasiquotation syntax for external interpreters
>>> [sh_| echo hello world! |]
hello world!
Custom quasiquoters
ghci = quoter $ callCommand "ghc" ["-ignore-dot-ghci", "-e"]
Then you can use ghci in ghci!
>>> [ghci| putStrLn "hello world!" |] :: IO ()
hello world!
For more examples, see examples/CustomQQ.hs
Haskell values embedding
Let's define Embed instance for a custom data type:
data Bang = Bang
instance Embed Bang where
embed Bang = "!"
Then you can use variables of Bang type in quoted strings!
>>> [sh_| echo hello#{Bang} |]
hello!
>>> let bang = Bang in [sh_| echo hello#{bang} |]
hello!
Note, command-qq does not support full Haskell in embeddings,
only variables/constructors names and literals