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libQASM is a library to parse cQASM programs, developed by QuTech.

At the moment, libQASM only supports cQASM v3.0 programs (see cQASM-spec for the language specification).

It performs lexical, syntactic, and semantic analysis of an input program received via a file or a string. It produces one of the following results:

• A syntactic or semantic AST (Abstract Syntax Tree) object. Depending on if we are parsing or analysing.
• A list of parsing or analysing errors. In case the input program was malformed.
• A JSON representation of either the AST or the list of errors.

It can be used from:

• C++ projects (as a Conan package).
• Python projects (as a Python package).
• Emscripten projects (via a Typescript frontend).

Check out QX simulator and OpenSquirrel compiler for an example of use in a C++ and a Python project, respectively.