Graphql parser based on libgraphqlparser

Python2.7+ Python3.4+ class-based bindings to libgraphqlparser

See usage example in examples/visitor_example.py

Still EXPERIMENTAL

Installing

Prerequisites:

• Install cython
• Download and build libgraphqlparser

Install using pip

• set an env var $GRAPHQL_HOME to the folder where libgraphqlparser is
• LDFLAGS="-L$GRAPHQL_HOME" CFLAGS="-I$GRAPHQL_HOME/c -I$GRAPHQL_HOME" pip install graphqlparser

Building from source

Needed to rebuild the generate cython files from the libgraphql AST

• download submodules with git checkout --recursive
• build libgraphql library in folder ./libgraphqlparser (python2.7 required for building) (usually pushd libgraphqlparser && cmake . && make && popd works)
• generate source code with python ast/build_ast.py
• you can now switch to python 3
• install cython
• run LDFLAGS="-L./libgraphqlparser" CFLAGS="-Ilibgraphqlparser/c -Ilibgraphqlparser" python setup.py build_ext

To package with wheel: - install wheel: pip install wheel - create wheelhouse mkdir .wheelhouse - build with pip wheel --wheel-dir=.wheelhouse .

Run

Make sure libgraphqlparser is available to the loader. You can add its base dir to LD_LIBRARY_PATH.

Known issues

• Only (lightly) tested on python3
• Unicode string handling not yet complete (a mixture of bytes and strings all over)
• Exceptions in the visitor's class callbacks are ignored
• libgraphqlparser is dynamically linked but It would be better if it was linked statically

TODO

• make wheels available on github
• build more wheel packages for linux 32 bit and other platforms