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Theme fund: NGI0 Entrust
Start: 2023-10
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Data and AI


Implementation of jq in Rust with formal semantics

JSON is a data format that is frequently used to publish Open Data. jq is a widely used programming language that allows citizens to easily process JSON data. There are several tools to run jq programs, including jq, gojq, and jaq. Of these three tools, jaq is the fastest (judging from several benchmarks), despite having the smallest code base. This project centers on improving jaq and the wider jq ecosystem: First, we want to advance the development of jaq, in particular to support more features of jq. Next, we want to make jaq more accessible, by creating JavaScript bindings for jaq. This will allow developers to integrate jaq into websites. Furthermore, this will allow users to run jaq from a browser, respecting their privacy by processing data on their machines. Finally, we want to create formal semantics for jq, based on jaq's execution approach. This will allow users to better understand how jq programs behave.

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This project was funded through the NGI0 Entrust Fund, a fund established by NLnet with financial support from the European Commission's Next Generation Internet programme, under the aegis of DG Communications Networks, Content and Technology under grant agreement No 101069594.