Copy a comparable setup in ./implementations and adapt. Be aware that some implementations decide to return queries for single values as scalars, compare ./implementations/Clojure_json-path.
Test the implementation's ninja build script via (using Clojure as an example):
ninja -f implementations/Clojure_json-path/build.ninja
Test a query by running (again Clojure as example):
./src/query_implementation.sh queries/array_slice implementations/Clojure_json-path
Add a new directory under ./queries and give it a selector and
document.json.
Test a query against an implementation (Goessner's JavaScript as example):
./src/query_implementation.sh queries/THE_NEW_QUERY implementations/JavaScript_Goessner
See "One-off comparisons" in the README.md to execute against all implementations.
QUERY_NAMING_PATTERN.md explains what is a good query name.
Some implementations can be automatically upgraded:
./src/with_native.sh ./src/upgrade.sh
(Or use ./src/with_docker.sh if you prefer Docker.)
./src/clean.sh