Snap Framework

Snap is a simple and fast web development framework and server written in Haskell. For more information about Snap, read the

README.SNAP.md

Library contents

This is top-level project for the Snap Framework, which contains:

• a library allowing Snap applications to recompile actions on the fly in development mode, with no performance loss in production mode.

• a "snaplet" API allowing web applications to be build from composable pieces.

The command-line utility

snap

snap-templates

Building snap

After you clone the repository, change to the newly created snap directory and run

git submodule update --init --recursive
./init-sandbox.sh
cabal install

(You may want to look at pull.sh or pullLatestMaster.sh.) This updates all the Snap Framework dependencies to the correct version, creates a sandbox, and installs everything. The snap library is built using Cabal and Hackage.

Building the Haddock Documentation

The haddock documentation can be built using 'cabal haddock'.

The docs get put in

dist/doc/html/

Building the testsuite

To build the test suite, run

$ cabal clean
$ cabal configure --enable-tests --enable-library-coverage
$ cabal build
$ cabal install --enable-tests

From here you can invoke the testsuite by running:

$ ./runTestsAndCoverage.sh

The testsuite generates an

hpc

dist/hpc

Roadmap to Understanding Snaplets

1. Read

   Tutorial.lhs

   which is in the

   project_template/tutorial/src

   directory of the

   snap-templates

   package.
2. Generate and read the haddock docs.
3. The test code has the nice property that it actually functions as a pretty good example app and covers a lot of the use cases.
4. If you're interested in the implementation, read design.md.