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Circom G4 Grammar Specification

This repository provides a Circom grammar implementation in G4 format using the ANTLR tool.

Grammar Compatibility

Source: Circom Parser Grammar

Issues

  • The grammar described in this repository is unofficial. Consequently, the following issues may arise:
    • The grammar may not be up-to-date.
    • Some structures that are valid in the official grammar may not be valid in this version due to factors such as redundancy or complexity.

Despite this, we strive to cover 99.9% of the existing Circom code, offering a simple and efficient structure. The parser is capable of handling both circomlib and iden3-circuits.

Contribution

To contribute, first clone the repository:

git clone [email protected]:distributed-lab/circom-parser.git
cd circom-parser

Next, install the dependencies:

go mod tidy

Then, synchronize the git submodules:

git submodule update --init
git submodule update --remote

After initializing the submodules, you are ready to generate the Go bindings for the grammar and run tests with a single command:

make