Module pattern 

Node and relationship pattern parsers.

Functions

ident

Parse an identifier (unquoted, escaped, or keyword used in identifier position).

map_properties

Parse map properties: {key: expr, key: expr, ...}

node_pattern

Parse a node pattern: (variable:Label {props})

pattern_element_chain

Parse a chain of node-rel-node-rel-… pattern elements.

pattern_parser

Parse a full pattern with optional variable assignment: p = (a)-[:R]->(b)