alex: Alex is a tool for generating lexical analysers in Haskell
Alex is a tool for generating lexical analysers in Haskell. It takes a description of tokens based on regular expressions and generates a Haskell module containing code for scanning text efficiently. It is similar to the tool lex or flex for C/C++.
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Flags
Automatic Flags
| Name | Description | Default |
|---|---|---|
| small_base | Choose the new smaller, split-up base package. | Enabled |
Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info
Downloads
- alex-3.2.1.tar.gz [browse] (Cabal source package)
- Package description (revised from the package)
Note: This package has metadata revisions in the cabal description newer than included in the tarball. To unpack the package including the revisions, use 'cabal get'.
Maintainer's Corner
For package maintainers and hackage trustees
Candidates
| Versions [RSS] | 2.1.0, 2.2, 2.3, 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 3.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5, 3.1.0, 3.1.1, 3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.1.6, 3.1.7, 3.2.0, 3.2.1, 3.2.2, 3.2.3, 3.2.4, 3.2.5, 3.2.6, 3.2.7, 3.2.7.1, 3.2.7.2, 3.2.7.3, 3.2.7.4, 3.3.0.0, 3.4.0.0, 3.4.0.1, 3.5.0.0, 3.5.1.0 (info) |
|---|---|
| Change log | CHANGELOG.md |
| Dependencies | array, base (>=1.0 && <5), containers, directory, QuickCheck (>=2) [details] |
| License | BSD-3-Clause |
| Copyright | (c) Chis Dornan, Simon Marlow |
| Author | Chris Dornan and Simon Marlow |
| Maintainer | Simon Marlow <marlowsd@gmail.com> |
| Revised | Revision 2 made by AndreasAbel at 2021-11-11T21:07:59Z |
| Category | Development |
| Home page | http://www.haskell.org/alex/ |
| Bug tracker | https://github.com/simonmar/alex/issues |
| Source repo | head: git clone https://github.com/simonmar/alex.git |
| Uploaded | by SimonMarlow at 2016-10-18T10:30:04Z |
| Distributions | Arch:3.2.7.4, Debian:3.2.5, Fedora:3.3.0.0, FreeBSD:3.1.4, LTSHaskell:3.4.0.1, NixOS:3.4.0.1, Stackage:3.5.1.0, openSUSE:3.5.0.0 |
| Reverse Dependencies | 1 direct, 0 indirect [details] |
| Executables | alex |
| Downloads | 164063 total (726 in the last 30 days) |
| Rating | 2.0 (votes: 1) [estimated by Bayesian average] |
| Your Rating | |
| Status | Docs not available [build log] Last success reported on 2016-10-26 [all 3 reports] |
Readme for alex-3.2.1
[back to package description]Alex: A Lexical Analyser Generator
Alex is a Lex-like tool for generating Haskell scanners. For complete documentation, see the doc directory.
http://hackage.haskell.org/package/alex
Alex is built using Cabal. First install GHC and cabal-install, then:
$ cabal configure
$ cabal build
$ cabal install
Alex version 2.0 has changed fairly considerably since version 1.x, and the syntax is almost completely different. For a detailed list of changes, see the release notes in the documentation.
Alex is now covered by a BSD-Style licence; see the licence file in the 'doc' directory for details.
The sources are in the 'src' directory and the documentation in the 'doc' directory; various examples are in the 'examples' subdirectory.
The source code in the 'src' and 'examples' directories is intended for a Haskell 98 compiler with hierarchical modules. It should work with GHC >= 5.04.
Please report any bugs or comments at https://github.com/simonmar/alex/issues
Share and enjoy,
Chris Dornan: cdornan@arm.com
Isaac Jones: ijones@syntaxpolice.org
Simon Marlow: simonmar@microsoft.com