EdAllonby / pretty-cypher

This is currently a Neo4j Cypher language parser written in Haskell. This will eventually be used to format cypher queries to a standard format.

pretty-cypher

What this is

This is currently a Neo4j Cypher language parser written in Haskell. This will eventually be used to format cypher queries to a standard format.

It currently supports a small subset of cypher language parsing, along with a rudimentary quasiquoter.

Dev

Run tests with stack test

Features

Parsing

• Match and optional match clause parsing
• Create clause parsing
• Delete and detached delete clause parsing
• With clause parsing
• Return clause parsing

For example, it is currently possible to parse the following cypher query into the DSL:

MATCH (a:Movie { title: 'Wall Street' })
OPTIONAL MATCH (a)-[r:ACTS_IN]->()
WITH *, count(r) as roles_count
DELETE a
RETURN *

Quasiquotes

• Basic quasiquote support to parse cypher text into the DSL, i.e. data = [cypher|(p:Person {age: 30}) RETURN p]

Todo

See our project board for items to do.